changeset 0:1535ffddeff4 draft

planemo upload commit a7ac27de550a07fd6a3e3ea3fb0de65f3a10a0e6-dirty
author cristian
date Thu, 07 Sep 2017 08:51:57 -0400
parents
children cb8bac9d0d37
files CpGoe.pl CpGoe.xml Functions/Kernel_function_form.R Functions/density_pm.R KDEanalysis.r KDEanalysis.xml LICENSE readme.rst test-data/10_std_unif.txt test-data/9_seqs.fa tool_dependencies.xml
diffstat 11 files changed, 2432 insertions(+), 0 deletions(-) [+]
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CpGoe.pl	Thu Sep 07 08:51:57 2017 -0400
@@ -0,0 +1,368 @@
+#! /usr/bin/perl
+
+####################################
+#
+# CpGoe.pl -f fasta-file -o output_file -m minlength
+#
+# reads concatanated fasta files, writes name, length, CpGs and GpCs, CpGo/e ratios and other quantities into TAB file for each sequence
+#####################################
+
+use diagnostics;
+use strict;
+use Carp;
+use FileHandle;
+use File::Path;
+use File::Basename;
+use Data::Dumper;
+use Getopt::Std;
+
+my $VERSION = "1.0";
+$Getopt::Std::STANDARD_HELP_VERSION = 1;
+
+
+# Called when --help set as flag
+sub HELP_MESSAGE
+{
+  print "Description: CpGoe processes a FASTA file and outputs the CpGo/e ratios and - if specified - further quantities\n\n" .
+        "Usage: CpGoe.pl [OPTION] -f FASTA_FILE \n\n" .
+        "Options:\n" .
+        "    -f FASTA_FILE   Name of FASTA file containing the input sequences. REQUIRED.\n" .
+        "    -o OUT_FILE     name of output file containing the results\n" .
+        "    -m MIN_LEN      minimum length of sequences, shorter sequences are discarded\n" .
+		"    -c CONTEXT		 Context to calculate the ratio (CpA, CpC, CpG, CpT) default CpG.\n" .
+        "    -a ALGORITHM    Algorithm used to calculate CpGo/e ratio. Default: 1\n" .
+		"                         1 - (CpG / (C * G)) * (L^2 / L-1)\n" .
+		"                         2 - (CpG / (C * G)) * (L^2 / L)\n" .
+		"                         3 - (CpG / L) / (G + C)^2\n" .
+		"                         4 - CpG / ( (C + G)/2 )^2\n" .
+        "    -d              detailed output, providing other quantities additional to the CpGo/e ratios\n" .
+        "    -h              output header line\n".
+        "    -v              verbose messages\n" ;
+  exit 0;
+}
+
+
+
+# Called when --version set as flag
+sub VERSION_MESSAGE
+{
+  print "CpGoe $VERSION\n";
+}
+
+
+
+# Command line parsing
+# ... read argument
+my %opts;
+getopts('f:o:m:c:a:dvh', \%opts);
+#if ($#ARGV != 0) {
+#  print STDERR "Exactly one argument has to be provided, the name of the input FASTA file.\n" .
+#               "Moreover, the options must be listed first, then the name of the input FASTA file.\n";
+#  exit 1;
+#}
+my $fasta_fname;
+if (exists($opts{'f'})) {
+  $fasta_fname = $opts{'f'};
+} else {
+  HELP_MESSAGE
+}
+
+# ... read options
+my $out_fname;
+my $has_file_output;
+if (exists($opts{'o'})) {
+  $out_fname = $opts{'o'};
+  $has_file_output = 1;
+}
+else {
+  $has_file_output = 0;
+}
+
+my $min_len;
+if (exists($opts{'m'})) {
+  $min_len = $opts{'m'};
+}
+else {
+  $min_len = 1;
+}
+
+my $algo = 1;
+if (exists($opts{'a'})) {
+  $algo = $opts{'a'};
+}
+
+my $context = 'CpG';
+if (exists($opts{'c'})) {
+  $context = $opts{'c'};
+}
+
+my $is_verbose = exists($opts{'v'});
+my $has_header = exists($opts{'h'});
+my $is_detailed = exists($opts{'d'});
+
+
+
+# read input file and split into fasta sequences on the fly
+# ... check whether input FASTA file exists
+my $FASTA;
+if (-e $fasta_fname) {
+  if (-f $fasta_fname) {
+    my $res = open($FASTA, $fasta_fname);
+    if (!$res) {
+      print STDERR "could not open $fasta_fname\n";
+      exit 1;
+    }
+  }
+  else {
+    print STDERR "$fasta_fname is not a file\n";
+    exit 1;
+  }
+}
+else {
+  print STDERR "cannot open file $fasta_fname\n";
+  exit 1;
+}
+
+
+# ... determine which linebreak is used (linux / windows / mac)
+my $found_n = 0;
+my $found_r = 0;
+my $found_rn = 0;
+while ( defined( my $ch = getc($FASTA) ) ) {
+  if ($ch eq "\n") {
+    if ($found_r) {
+      $found_rn = 1;
+      $found_r = 0;
+    } else {
+      $found_n = 1;
+    }
+    last;
+  } elsif ($ch eq "\r") {
+    $found_r = 1;
+  } else {
+    if ($found_r) {
+      last;
+    }
+  }
+}
+close($FASTA);
+if ($found_r + $found_n + $found_rn != 1) {
+  print STDERR "something went wrong determining the linebreaks used in $fasta_fname\n";
+}
+
+
+# ... read in sequences
+my $old_linebreak = $/;
+if ($found_n) {
+  $/ = "\n";
+} elsif ($found_r) {
+  $/ = "\r";
+} else {
+  $/ = "\r\n";
+}
+my $res = open($FASTA, $fasta_fname);
+if (!$res) {
+  print STDERR "could not open $fasta_fname\n";
+  exit 1;
+}
+
+my @names = ();   # names of the sequences
+my @seqs = ();   # sequences
+my $is_first = 1;
+while ( <$FASTA> ) {
+  chomp;
+  if (/^[^#]/) {
+    if ( /^>(\S+)/) {
+	  #s/^>|\s+$//g;   # remove leading '>' and trailing whitespaces
+	  #s/\s/_/g;   # replace spaces by underscores
+      push(@names, $1);
+      push(@seqs, "");
+      $is_first = 0;
+    }
+    else {
+      if ($is_first) {
+        print STDERR "first non-comment line of FASTA file " . $fasta_fname . " does not start with \'>\'\n";
+        exit 1;
+      }
+      else {
+        s/[\-\.]*//g;   # remove dashes and dots
+        $seqs[-1] .= $_;
+      }
+    }
+  }
+}
+$res = close($FASTA);
+if (!$res) {
+  print STDERR "could not close $fasta_fname\n";
+  exit 1;
+}
+$/ = $old_linebreak;
+
+# print Dumper(@names) . "\n";
+# print Dumper(@seqs) . "\n";
+
+
+# ... check sequences
+# ... ... are there any sequence names?
+if ($#names < 0) {
+  print STDERR "FASTA file $fasta_fname is empty\n";
+  exit 1;
+}
+
+# ... ... are there empty sequences?}
+my $str = "";
+my $err = 0;
+my $num = 0;
+my $MAX = 50;   # maximum number of notifications about an empty sequence
+for (my $i = 0; $i <= $#names; ++$i) {
+  if ($seqs[$i] eq "") {
+    if ($num < $MAX) {
+      $str .= "Sequence " . $names[$i] . " in FASTA file $fasta_fname is empty\n";
+    }
+    $err = 1;
+    ++$num;
+  }
+}
+if ($err) {
+  print STDERR "$str";
+  if ($num > $MAX) {
+    print STDERR "$num empty sequences in total in FASTA file $fasta_fname \n";
+  }
+  exit 1;
+}
+
+
+# ... ... check for illegal characters in sequences
+for (my $i = 0; $i <= $#names; ++$i) {
+  my $str = $seqs[$i];
+  $str =~ s/[abcdghkmnrstuvwy]//gi;
+  if (length($str) > 0) {
+    $str = join '', sort { $a cmp $b } split(//, $str);
+    print STDERR "Sequence " . $names[$i] . " of FASTA file " . $fasta_fname . " contains illegal characters: ";
+    for (my $j = 0; $j <= length($str); ++$j) {
+      my $out = ($j == 0);
+      my $curr = substr($str, $j, 1);
+      if (!$out) {
+        my $prev = substr($str, $j - 1, 1) ;
+        $out = ($curr ne $prev);
+      }
+      if ($out) {
+        print STDERR $curr;
+      }
+    }
+    print STDERR "\n";
+    exit 1;
+  }
+}
+
+
+# ... output
+if ($is_verbose) {
+  print $#names + 1 . " sequence(s) read.\n";
+}
+
+
+
+# output quantities
+# ... open output file
+my $OUT;
+if ($has_file_output) {
+  if ((-e $out_fname) && !(-f $out_fname)) {
+    print STDERR "$out_fname exists and is not a file\n";
+    exit 1;
+  }
+  if (!open($OUT, ">$out_fname")) {
+    print STDERR "cannot create file $out_fname\n";
+    exit 1;
+  }
+} else {
+  $OUT = *STDOUT;
+}
+
+# ... print header
+if ($has_header) {
+  print $OUT "#name\tlength\tCpGs\tGpCs\tCs\tGs\tNs\tCpG o\/e\n";
+}
+
+
+
+# ... for each sequence calculate CpGo/e ratios and related quantities:
+# - length of the sequence
+# - CpGs present in the sequence
+# - GpCs present in the sequence
+# - Cs the number of C present in the sequence
+# - Gs the number of G present in the sequence
+# - CpG o/e ratio of the sequence
+my $num_short = 0;   # number of sequences which are too short
+for my $i (0 .. $#names) {
+  my @ar = ();
+  @ar = split('\|', $names[$i]);
+  my $seqname = $ar[1];
+  my $num_N = () = ( $seqs[$i] =~ m/N/gi );
+  my $len = length($seqs[$i]);
+  my $l = $len - $num_N;
+  if ($l >= $min_len) {
+	  my ($num_G, $num_CG);
+	if ($context eq 'CpG') {
+		$num_G = () = ( $seqs[$i] =~ m/G/gi );
+		$num_CG = () = ( $seqs[$i] =~ m/CG/gi );
+	} elsif ($context eq 'CpA') {
+		$num_G = () = ( $seqs[$i] =~ m/A/gi );
+		$num_CG = () = ( $seqs[$i] =~ m/CA/gi );
+	} elsif ($context eq 'CpC') {
+		$num_G = () = ( $seqs[$i] =~ m/C/gi );
+		$num_CG = () = ( $seqs[$i] =~ m/CC/gi );
+	} elsif ($context eq 'CpT') {
+		$num_G = () = ( $seqs[$i] =~ m/T/gi );
+		$num_CG = () = ( $seqs[$i] =~ m/CT/gi );
+	} else {
+		$num_G = 0;
+		$num_CG = 0;
+	}
+    my $num_C = () = ( $seqs[$i] =~ m/C/gi );
+	my $num_TG = () = ( $seqs[$i] =~ m/TG/gi );
+    my $CpGoe;
+    if ( ($num_G == 0) || ($num_C == 0) || ($l == 1) || ($num_CG == 0) ) {
+      $CpGoe = 0;
+    }
+    else {
+	  if ($algo == 1) {
+        my $x = $num_CG / ($num_C * $num_G);
+        my $y = $l**2 / ($l - 1);
+        $CpGoe = $x * $y;
+      } elsif ($algo == 2) {
+		# cf.Gardiner-Garden and Frommer
+		$CpGoe = ($num_CG/($num_C * $num_G))*$l;
+      } elsif ($algo == 3) {
+		# cf. Zeng and Yi
+		$CpGoe = ($num_CG / $l)/(($num_C + $num_G)/$l)**2;
+	  } elsif ($algo == 4) {
+		# cf. Saxonov, Berg and Brutlag
+		$CpGoe = $num_CG / (($num_C + $num_G)/2)**2;
+	  }
+	}
+    print $OUT $names[$i] . "\t";
+    if ($is_detailed) {
+      if ($algo == 3) {
+		print $OUT $len . "\t" . $num_CG . "\t" . $num_TG . "\t" .$num_C. "\t" .$num_G. "\t" .$num_N. "\t";
+	  } else {
+		print $OUT $len . "\t" . $num_CG . "\t" . $num_C  . "\t" .$num_G. "\t" .$num_N. "\t";
+	  }
+    }
+    print $OUT $CpGoe . "\n";
+  } else {
+    ++$num_short;
+  }
+}
+if ($is_verbose) {
+  print $num_short . " sequence(s) discarded due to short length.\n";
+}
+
+if ($has_file_output) {
+  my $res = close($OUT);
+  if (!$res) {
+    print STDERR "could not close $out_fname\n";
+    exit 1;
+  }
+}
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CpGoe.xml	Thu Sep 07 08:51:57 2017 -0400
@@ -0,0 +1,57 @@
+<tool id="CpGoe" name="Calculate CpNo/e" version="1.0.0">
+    <requirements>
+        <requirement type="package" version="5.8.0">perl</requirement>
+    </requirements>
+    <stdio>
+        <exit_code range="1:" />
+    </stdio>
+    <command><![CDATA[
+		perl ${__tool_directory__}/CpGoe.pl -f $fastafile -a $algo -c $context -o $outfile -m $minlength
+    ]]></command>
+    <inputs>
+		<param name="fastafile" type="data" format="fasta" />
+		<param name="context" type="select" label="Select context to calculate the CpNo/e ratio" >
+			<option value="CpG" selected="selected">CpG</option>
+			<option value="CpA">CpA</option>
+			<option value="CpC">CpC</option>
+			<option value="CpT">CpT</option>
+		</param>
+		<param name="algo" type="select" label="Select algorithm to calculate the CpGo/e ratio" >
+			<option value="1">(CpG / (C * G)) * (L^2 / L-1)</option>
+			<option value="2">Gardiner-Garden and Frommer (CpG / (G + C))*L</option>
+			<option value="3">Zeng and Yi (CpG / L) / ((C + G)/L)^2</option>
+			<option value="4">Saxonov, Berg and Brutlag CpG / ((C + G)/2)^2</option>
+		</param>
+		<param name="minlength" type="integer" value="200" help="Minimum length of the sequence to calculate CpGo/e ratio" />
+    </inputs>
+    <outputs>
+		<data name="outfile" format="tabular" />
+    </outputs>
+	<tests>
+		<test>
+			<param name="fastafile" value="9_seqs.fa"/>
+			<output name="outfile1" file="9_seqs_cpgoe.csv"/>
+		</test>
+	</tests>
+    <help><![CDATA[
+	CpGoe.pl -f fasta-file -a algo -c context -o output_file -m minlength
+
+	Reads multi fasta files, writes name, length, CpGs and GpCs, CpGo/e ratios and other quantities into TAB file for each sequence.
+
+	The available contexts (-c) are CpG, CpA, CpC, CpT. Default CpG.
+
+	The algorithms (-a) available for -a are the following::
+
+		1 => (CpG / (C * G)) * (L^2 / L-1)
+		2 => (CpG / (C * G)) * L
+		3 => (CpG / L) / ((C + G) / L)^2
+		4 => (CpG / (C + G)/2)^2
+
+	Where L represents the length of the sequence, CpG represents the count of CG dinucleotide, C and G represent the count for the respective bases and TG represents the number of TG dinucleotides.
+    ]]></help>
+    <citations>
+        <citation>
+          <citation type="doi">10.1101/180463</citation>
+        </citation>
+    </citations>
+</tool>
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Functions/Kernel_function_form.R	Thu Sep 07 08:51:57 2017 -0400
@@ -0,0 +1,311 @@
+##############################################
+# KDE function for single observation sequence #
+##############################################
+
+# load packages
+require(moments, quietly = TRUE)
+require(doParallel, quietly = TRUE)
+
+
+# get names for the columns of the table characterizing the peaks
+col.names.peaks <- function()
+{
+  v <- c("Number of modes", "Number of modes (5% excluded)",
+         "Number of modes (10% excluded)", "Skewness",
+         "Mode skewness", "Nonparametric skewness", "Q50 skewness",
+         "Absolute Q50 mode skewness", "Absolute Q80 mode skewness",
+         "Peak 1", "Probability Mass 1",
+         "Peak 2", "Probability Mass 2",
+         "Peak 3", "Probability Mass 3",
+         "Peak 4", "Probability Mass 4",
+         "Peak 5", "Probability Mass 5",
+         "Peak 6", "Probability Mass 6",
+         "Peak 7", "Probability Mass 7",
+         "Peak 8", "Probability Mass 8",
+         "Peak 9", "Probability Mass 9",
+         "Peak 10", "Probability Mass 10", 
+         "Warning close modes",
+         "Number close modes", 
+         "Modes (close modes excluded)",
+         "SD", "IQR 80", "IQR 90",
+         "Total number of sequences")
+  return(v)
+}
+
+
+# get names for the columns of the table containing the boostrap results
+col.names.bs <- function()
+{
+  v <- c("Number of modes (NM)", 
+        "% of samples with same NM",
+        "% of samples with more NM",
+        "% of samples with less NM",
+        "no. of samples with same NM",
+        "% BS samples excluded by prob. mass crit.",
+        "Warning CI")
+  return(v)
+}
+
+
+# plot KDE for one set up CpGo/e ratios
+# obs: CpGo/e ratios
+# bs.cis: Is bootstrap done?
+# t.name: Title of the plot
+# t.sub: Text that is added below the title
+# t.legend: Is a legend printed?
+plot.KDE <- function(obs, t.name, bs.cis = FALSE, bstrp.reps = 1500, conf.lev = 0.95, t.sub = NULL, t.legend = TRUE, min.dist = 0.2, mode.mass = 0.01, band.width = 1.06)
+{ 
+  # determine directory where functions are located
+  cmdArgs <- commandArgs(trailingOnly = FALSE)
+  str <- "--file="
+  match <- grep(str, cmdArgs)
+  if (length(match) == 0) { 
+    FCTN.DIR <- "../Galaxy/Functions"
+  } else {
+    path <- normalizePath( sub(str, "", cmdArgs[match]) )
+    FCTN.DIR <- file.path(dirname(path), "Functions")
+  }
+  
+ # part 1: initialize parameters etc
+  # ---------------------------------
+  
+  # table with names and number of peaks
+  v <- col.names.peaks()
+  tab1.m <- data.frame(matrix(NA, nrow = 1, ncol = length(v)))
+  names(tab1.m) <- col.names.peaks()
+  # parameters to set in any case
+  num.points <- 10 ^ 4 # number of points where to estimate the density
+  p.bw <- "nrd" # algorithm for the bandwidth selection, "nrd" for Scott's bandwith
+  use.seed <- TRUE
+  threshold.modes <- mode.mass 
+  threshold.bs.ci <- 0.2 # only changes of +- threshold.bs.ci% in prob. mass is allowed for entering the CI calculation
+  # bootstrap with optional parameters
+  if (bs.cis) {
+    ncpus = max(1, detectCores()) # number of processsors
+    cl <- makeCluster(ncpus)
+    registerDoParallel(cl)
+    # table for the bootstrap
+    tab2.m <- data.frame(matrix(NA, nrow = 1, ncol = 7))
+    names(tab2.m) <- col.names.bs()
+  }
+
+
+  # part 2: estimate the KD and calculate probability masses
+  # --------------------------------------------------------
+ 
+  source( file.path(FCTN.DIR, "density_pm.R") )
+  estimate <- density_pm(obs, num.points, p.bw = band.width * sd(obs) / length(obs)^0.2, threshold.modes = threshold.modes)
+  ker <- estimate$ker # kernel density
+  p <- estimate$peaks
+  v <- estimate$valleys
+  pm <- estimate$pm
+  
+  # select for each peak a line type
+  num.pm <- length(p) # number of peaks
+  p5 <- estimate$p5
+  p10 <- estimate$p10
+  lty = rep(1, num.pm) #pm > 0.10
+  if (length(p10) > 0) { #pm < 0.10
+    lty[p10] <- 2
+  }
+  if (length(p5) > 0) { #pm < 0.05
+    lty[p5] <- 4
+  }
+  p.lty <- lty
+  
+  # part 3: bootstrap
+  # -----------------
+  
+  if (bs.cis == TRUE) { 
+    # do bootstrapping
+    estimateB = foreach(j = 1 : bstrp.reps ) %dopar% {
+      if (use.seed == TRUE) {set.seed(j)}
+      source( file.path(FCTN.DIR, "density_pm.R") )   # As doParallel is used, the source code has to be included here
+      obs.boot = obs[sample(seq(obs), replace = TRUE)]
+      density_pm_boot(obs.boot, num.points = num.points, p.bw = band.width * sd(obs) / length(obs)^0.2, threshold.modes = threshold.modes)
+    }
+    stopCluster(cl)
+    
+    # calculate CIs based on samples where the number of peaks of the KDE coincide with the original data
+    # and the probability mass of the peaks of the sample don not divert to strongly from the original data
+    # ... extract modes and pm for samples
+    num.pmB <- sapply(lapply(estimateB, "[[", "peaks"), length)   # no of peaks before cleaning
+    num.peaks.ok <- num.pmB == num.pm    # samples with same number of peaks before cleaning
+    pB <- t(sapply( estimateB[num.peaks.ok], "[[", "peaks") )
+    pmB <- t(sapply( estimateB[num.peaks.ok], "[[", "pm") )
+    if (num.pm == 1) { # put into right matrix form
+      pB <- t(pB)
+      pmB <- t(pmB)
+    }
+    
+    # ... check if prob. mass changes too strongly for any mode
+    t.pmB <- t(pmB)
+    keep.ub <- !apply(pm * (1 + threshold.bs.ci) < t.pmB, 2, any)
+    keep.lb <- !apply(pm * (1 - threshold.bs.ci) > t.pmB, 2, any)
+    mass.ok <- keep.ub & keep.lb
+    pB.cl <- as.matrix( pB[mass.ok, ] )
+    
+    # ... determine CIs
+    q <- (1 - conf.lev) / 2
+    p.CI <- apply(pB.cl, 2, quantile, probs = c(q, 1 - q))
+  }
+  
+  
+  # part 4: plots
+  # -------------
+    
+  #t.breaks <- seq(0, max(obs)*1.05, by = 0.03)
+  t.breaks = 50
+  hist_data <- hist(obs, breaks = t.breaks, plot = FALSE)
+  hist(obs, breaks = t.breaks, prob = TRUE, main = t.name,
+       # sub = paste("Gaussian kernel with band width", band.width),
+	   xlab = "CpG o/e ratio",
+       col = grey(0.9), border = grey(0.6)) #, xlim = c(-0.05, max(obs)*1.1))
+  if (!is.null(t.sub)) {
+    mtext(t.sub)
+  }
+  if (bs.cis == TRUE) { # CI
+    j <- 1 : ncol(p.CI)
+    rect(ker$x[p.CI[1, j]], 0, ker$x[p.CI[2, j]],
+         15, density = 20, angle = 45 + (j - 1) * 90, col = "blue") 
+  }
+  lines(ker, col = "red", lwd = 2) # density
+  
+  # vertical lines at peaks
+  x.pos = ker$x[p]
+  ok <- c()
+  close <- c()
+  for (i in 1:length(x.pos)) {
+    b <- TRUE
+    if (i > 1) {
+      if (x.pos[i] - x.pos[i - 1] < min.dist) {
+        b <- FALSE
+      }
+    } 
+    if (i < length(x.pos)) {
+      if (x.pos[i + 1] - x.pos[i] < min.dist) {
+        b <- FALSE
+      }
+    } 
+     
+    if (b) {
+      ok <- c(ok, i)
+    } else {
+      close <- c(close, i)
+    }
+  }
+  # peaks
+  if (length(ok) > 0) {
+    abline(v = ker$x[p][ok], col = "blue", lwd = 3, lty = p.lty) 
+  }
+  if (length(close) > 0) {
+    abline(v = ker$x[p][close], col = "orange", lwd = 3, lty = p.lty) 
+  }
+  # valleys
+  vals = ""
+  if (length(x.pos)>1) {
+#	ker$x[v][c(-1, -length(ker$x[v]))]
+	  vals = ker$x[v][c(-1, -length(ker$x[v]))]
+	  abline(v = vals, col = "black", lwd = 1) 
+  }
+  
+  # legend
+  if(t.legend == TRUE) {
+    t.sym <- expression(""<="", ""<"", "">="")
+    thr = threshold.modes
+    if (thr >= 0.1) {
+      md.labs <- substitute(paste("Mode with PM ", sym3, " ", thr, sep = ""), list(thr = thr, sym3 = t.sym[[3]]))
+    } else {
+      md.labs <- substitute(paste("Mode with PM ", sym3, " 0.1", sep = ""), list(sym3 = t.sym[[3]]))
+      if (thr >= 0.05) {
+        md.labs <- c( md.labs, substitute(paste("Mode with ", thr, " ", sym1, " PM ", sym2, " 0.1", sep = ""), list(thr = thr, sym1 = t.sym[[1]], sym2 = t.sym[[2]])) )     
+      } else {
+        md.labs <- c( md.labs, substitute(paste("Mode with 0.05 ", sym1, " PM ", sym2, " 0.1", sep = ""), list(sym1 = t.sym[[1]], sym2 = t.sym[[2]])),
+                               substitute(paste("Mode with ", thr, sym1, " PM ", sym2, " 0.05"), list(thr = thr, sym1 = t.sym[[1]], sym2 = t.sym[[2]])))    
+      }
+    }
+    legend("topright", 
+           c(expression("Estimated density"), md.labs),
+           lty = c(1, 1, 2, 4), lwd = c(2, 3, 3, 3),
+           col = c("red", "blue", "blue", "blue"), bg = "white") 
+  }
+  
+  
+  # part 5: return results
+  # ----------------------
+  
+  # part 5 a): results table 1
+  # tbd (maybe): introduce maximum number of modes (10 right now)
+  tab1.m[1, "Number of modes"] <- num.pm
+  tab1.m[1, 2] = num.pm - length(estimate$p5)
+  tab1.m[1, 3] = num.pm - length(estimate$p10)
+  for(j in 1 : 10){
+    if(num.pm < j){
+      tab1.m[1, j * 2 + 8] = c(" ")
+      tab1.m[1, j * 2 + 9] = c(" ")
+    } else{
+      tab1.m[1, j * 2 + 8] = ker$x[p][j]
+      tab1.m[1, j * 2 + 9] = pm[j]
+    }
+  }
+  
+  # fill table 1 with descriptives
+  tab1.m[1, "Skewness"] <- skewness(obs)
+  mode <- ker$x[ which.max(ker$y) ]
+  tab1.m[1, "Mode skewness"] <- (mean(obs) - mode) / sd(obs)
+  tab1.m[1, "Nonparametric skewness"] <- (mean(obs) - median(obs)) / sd(obs)
+  q <- quantile(obs, c(0.25, 0.5, 0.75))
+  tab1.m[1, "Q50 skewness"] <- (q[3] + q[1] - 2 * q[2]) / (q[3] - q[1])
+  tab1.m[1, "Absolute Q50 mode skewness"] <- (q[3] + q[1]) / 2 - mode
+  q <- quantile(obs, c(0.1, 0.5, 0.9))
+  tab1.m[1, "Absolute Q80 mode skewness"] <- (q[3] + q[1]) / 2 - mode
+  tab1.m[1, "SD"] <- sd(obs)
+  tab1.m[1, "IQR 80"] <- diff(quantile(obs, c(0.1, 0.9)))
+  tab1.m[1, "IQR 90"] <- diff(quantile(obs, c(0.05, 0.95)))
+  tab1.m[1, "Total number of sequences"] = length(obs)
+  
+  # check if any peak is closer than a given threshold to any other
+  num.close.modes <- sum(diff(ker$x[p]) < min.dist)
+  if ( any(diff(ker$x[p]) < min.dist) && (num.pm > 1) ) {
+    tab1.m[1, "Warning close modes"] <- "Modes too close"
+    tab1.m[1, "Number close modes"] <- num.close.modes
+    tab1.m[1, "Modes (close modes excluded)"] <- num.pm - num.close.modes
+  } else {
+    tab1.m[1, "Modes (close modes excluded)"] <- num.pm 
+  }
+  
+  # part 5 b): results table 2  
+  if (bs.cis == TRUE) {
+    ker <- lapply( estimateB, "[[", "ker")
+    peaks <- lapply( estimateB, "[[", "peaks")
+    num.peaks <- c()
+    for (i in 1:length(peaks)) {
+      curr.peaks <- ker[[i]]$x[ peaks[[i]] ]
+      num.cl <- sum(diff(curr.peaks) < min.dist)  
+      num.peaks <- c(num.peaks, length(curr.peaks) - num.cl)
+    }
+    
+    # fill table 2 with stats on number of modes in bs samples 
+    num <- num.pm - num.close.modes
+    tab2.m[1, "Number of modes (NM)"] <- num
+    tab2.m[1, "% of samples with same NM"] <- 100 * sum(num.peaks == num) / bstrp.reps  # equal
+    tab2.m[1, "% of samples with more NM"] <- 100 * sum(num.peaks > num) / bstrp.reps  # more
+    tab2.m[1, "% of samples with less NM"] <- 100 * sum(num.peaks < num) / bstrp.reps  # less
+    if (num.pm > 1) {
+      tab2.m[1, "Warning CI"] <- "CI's may be unreliable"
+    }
+    
+    tab2.m[1, "no. of samples with same NM"] <- sum(num.peaks == num)
+    tab2.m[1,  "% BS samples excluded by prob. mass crit."] <- (1 - sum(mass.ok) / sum(num.peaks.ok)) * 100
+  }
+
+  # return the results
+  if (bs.cis){
+    return(list(tab.des = tab1.m, tab.bs = tab2.m, valleys = vals))
+  } else {
+    return(list(tab.des = tab1.m, valleys = vals))
+  }
+}
+
+
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Functions/density_pm.R	Thu Sep 07 08:51:57 2017 -0400
@@ -0,0 +1,141 @@
+### Auxiliary functions ###
+
+# Finds the peak
+peaks <- function(x,partial=TRUE){
+  if (partial){ #includes the first and the last element
+    which(diff(c(TRUE,diff(x)>=0,FALSE))<0)
+  }else {
+    which(diff(diff(x)>=0)<0)+1
+  }
+}
+
+
+#Function that finds the valleys
+valleys <- function(x,partial=TRUE){
+  if (partial){ #includes the first and the last element
+    which(diff(c(FALSE,diff(x)>0,TRUE))>0)
+  }else {
+    which(diff(diff(x)>0)>0)+1
+  }
+}
+
+
+#Function that calculates the probability masses
+#ker: kernel density
+#v: valleys
+probability_mass <- function(ker,v){
+  require(sfsmisc, quietly = TRUE)
+  ker$y[which(ker$x<0)] = 0
+  pm = c()
+  for(j in 1:(length(v)-1)){
+    pm[j] = integrate.xy(ker$x,ker$y,ker$x[v[j]],ker$x[v[j+1]], use.spline = FALSE)
+  }
+  pm = pm/sum(pm)
+  return(pm)
+}
+
+
+#Function that tests if pm < value
+#pm: probability masses
+test_pm <- function(pm,value){ 
+  p = c()
+  num_pm = length(pm)
+  for(j in 1:num_pm){
+    if(pm[j]<value){
+      p = c(p,j)
+    }
+  }
+  return(p)
+}
+
+
+
+### Main functions ###
+
+# Estimate the kernel density and calculate the probability masses
+# obs : data set
+# num.points : number of points for the estimation of the kernel density
+density_pm <- function(obs, num.points, p.bw = p.bw, threshold.modes = threshold.modes){
+  
+  # fit model
+  ker = density(obs, bw = p.bw, n = num.points)
+  
+  # find peaks
+  p = peaks(ker$y)
+  
+  # find valleys
+  v = valleys(ker$y)
+  
+  # probability masses
+  pm = probability_mass(ker,v)
+  num_pm = length(pm)
+  
+  # number of pm < threshold.modes
+  p.del = test_pm(pm,threshold.modes)
+    
+  # delete modes with probability masses < threshold.modes
+  for(j in 1:num_pm){
+    if(j %in% p.del){
+      p[j] = NA
+      v[j+1] = NA
+    }
+  }  
+  p = p[!is.na(p)]
+  v = v[!is.na(v)]
+  
+  # probability masses (without the ones < threshold.modes)
+  pm = probability_mass(ker,v)
+  num_pm = length(pm)
+  
+  # number of pm<0.05
+  p5 = test_pm(pm,0.05)
+  
+  # number of pm<0.10
+  p10 = test_pm(pm,0.10)
+  
+  estimate = list(ker=ker,peaks=p,valleys=v,pm=pm,p5=p5,p10=p10)
+  
+  return(estimate)
+}
+
+
+
+# Estimate the kernel density and calculate the probability masses, and do bootstrap
+# obs : data set
+# num.points : number of points for the estimation of the kernel density
+density_pm_boot <- function(obs, num.points, p.bw = p.bw, threshold.modes = threshold.modes){
+  
+  # fit model
+  ker = density(obs,bw = p.bw, n = num.points)
+  
+  # find peaks
+  p = peaks(ker$y)
+  
+  # find valleys
+  v = valleys(ker$y)
+  
+  # probability masses
+  pm = probability_mass(ker, v)
+  num_pm = length(pm)
+  
+  # number of pm < threshold.modes
+  p.del = test_pm(pm,threshold.modes)
+  
+  # delete modes with probability masses < threshold.modes
+  for(j in 1:num_pm){
+    if(j %in% p.del){
+      p[j] = 0
+      v[j+1] = 0
+    }
+  }  
+  p = p[! p == 0]
+  v = v[! v == 0]
+  
+  # probability masses (without the ones < threshold.modes)
+  pm = probability_mass(ker,v)
+  num_pm = length(pm)
+  
+  estimate = list(ker=ker,peaks=p,valleys=v,pm=pm)
+  
+  return(estimate)
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/KDEanalysis.r	Thu Sep 07 08:51:57 2017 -0400
@@ -0,0 +1,504 @@
+# Carry out analysis of CpGo/E data for Galaxy module
+# Ingo Bulla
+# 27 Jan 16
+
+# load packages
+pckg <- c("methods", "optparse")
+for (p in pckg) {
+  if (!(p %in% rownames(installed.packages()))) {
+    stop( paste("R package", p , "is not installed"), call. = FALSE)
+  }
+}
+require(methods, quietly = TRUE)
+require(optparse, quietly = TRUE)
+
+# determine directory where functions are located
+cmdArgs <- commandArgs(trailingOnly = FALSE)
+str <- "--file="
+match <- grep(str, cmdArgs)
+if (length(match) == 0) {
+  stop("notos.r not set up to be called from R console")
+}
+path <- normalizePath( sub(str, "", cmdArgs[match]) )
+FCTN.DIR <- file.path(dirname(path), "Functions")
+
+source( file.path( FCTN.DIR, "Kernel_function_form.R") )
+
+
+MAX.CPGOE <- 10   # maximum value for CpGo/e ratios
+
+
+# process outliers and return quantities characterizing the distribution
+# obs: CpGo/e ratios
+proc.outliers <- function(obs, frac.outl) {
+  ret <- list()
+
+  # remove all zeros from sample
+  no.obs.raw <- length(obs)
+  ret[["prop.zero"]] <- sum(obs == 0) / no.obs.raw
+  obs <- obs[obs != 0]
+  if (length(obs) < 3) {
+    ret[["valid"]] <- FALSE
+    return(ret)
+  }
+  ret[["obs.nz"]] <- obs
+
+  # replace very large values by a maximum value
+  obs <- sapply(obs, function(x) min(x, MAX.CPGOE))
+
+  # defining variables
+  # ... mean, median and standard deviation
+  ret[["mu.obs"]] <- mu.obs <- mean(obs)
+  ret[["me.obs"]] <- me.obs <- median(obs)
+  sd.obs <- sd(obs)
+  iqr.obs <- IQR(obs)
+
+  # ... uppper and lower limits, based on mean +- k * sd, med. +- k * iqr, k = 2, ..., 4
+  ul.mu <- mu.obs + (2 : 5) * sd.obs
+  ll.mu <- mu.obs - (2 : 5) * sd.obs
+  ul.me <- quantile(obs, 0.75) + (2 : 5) * iqr.obs
+  ll.me <- quantile(obs, 0.25) - (2 : 5) * iqr.obs
+  names(ul.mu) <- names(ll.mu) <- 2 : 5
+  names(ul.me) <- names(ll.me) <- 2 : 5
+  ret[["ul.mu"]] <- ul.mu
+  ret[["ll.mu"]] <- ll.mu
+  ret[["ul.me"]] <- ul.me
+  ret[["ll.me"]] <- ll.me
+
+  # summary statistics and data output
+  # ... calculate proportion of data excluded when using different ranges
+  ret[["prop2"]] <- prop2 <- length(obs[obs < ll.me["2"] | ul.me["2"] < obs]) / no.obs.raw
+  ret[["prop3"]] <- prop3 <- length(obs[obs < ll.me["3"] | ul.me["3"] < obs]) / no.obs.raw
+  ret[["prop4"]] <- prop4 <- length(obs[obs < ll.me["4"] | ul.me["4"] < obs]) / no.obs.raw
+  ret[["prop5"]] <- prop5 <- length(obs[obs < ll.me["5"] | ul.me["5"] < obs]) / no.obs.raw
+  # ... choose k in Q1 / Q3 +- k * IQR such that no more than 1% of the data are excluded
+  v <- c(prop2, prop3, prop4, prop5) < frac.outl
+
+  if (any(v)) {
+    excl.crit <- min(which(v))
+    ret[["obs.cl"]] <- obs[!(obs < ll.me[excl.crit] | ul.me[excl.crit] < obs)]
+    ret[["used"]] <- paste(2 : 5, "iqr", sep = "")[excl.crit]
+  } else {
+    ret[["obs.cl"]] <- obs[!(obs < ll.me[4] | ul.me[4] < obs)]
+    ret[["used"]] <- "limited to 5 * iqr"
+  }
+  ret[["valid"]] <- TRUE
+  return(ret)
+}
+
+
+# Read CpGo/e ratios from file
+# warn: issue warning if necessary
+read.CpGoe <- function(fname, warn) {
+	# read input file line by line, split by whitespaces, assign last substring to CpGo/e ratios
+	# ... remove comments and trailing whitespaces
+	print(fname)
+	v <- read.table(fname,  fill = TRUE, col.names = c("seq", "val"))
+	obs <- v$val
+
+	obs <- obs[!is.na(obs)]
+	return(obs)
+}
+
+
+# process command line arguments
+# expected arguments:
+# - names of the species (each as a separate argument)
+# - names of CpGo/e files of the species (each as a separate argument)
+# ... parse arguments
+option_list <- list(make_option(c("-o", "--frac-outl"), type = "double", default = 0.01,
+                                help = "maximum fraction of CpGo/e ratios excluded as outliers [default %default]"),
+                    make_option(c("-d", "--min-dist"), type = "double", default = 0.2,
+                                help = "minimum distance between modes, modes that are closer are joined [default %default]"),
+                    make_option(c("-c", "--conf-level"), type = "double", default = 0.95,
+                                help = "level of the confidence intervals of the mode positions [default %default]"),
+                    make_option(c("-m", "--mode-mass"), type = "double", default = 0.05,
+                                help = "minimum probability mass of a mode [default %default]"),
+                    make_option(c("-b", "--band-width"), type = "double", default = 1.06,
+                                help = "bandwidth constant for kernels [default %default]"),
+                    make_option(c("-B", "--bootstrap"), action="store_true", default = FALSE,
+                                help = "calculate confidence intervals of mode positions using bootstrap [default %default]"),
+                    make_option(c("-r", "--bootstrap-reps"), type = "integer", default = 1500,
+                                help = "number of bootstrap repetitions [default %default]"),
+                    make_option(c("-H", "--outlier-hist-file"), type = "character", default = "outliers_hist.pdf",
+                                help = "name of the output file for the outlier histograms [default %default]"),
+                    make_option(c("-C", "--cutoff-file"), type = "character", default = "outliers_cutoff.csv",
+                                help = "name of the output file for the outlier cutoff [default %default]"),
+                    make_option(c("-k", "--kde-file"), type = "character", default = "KDE.pdf",
+                                help = "name of the output file for the KDE [default %default]"),
+                    make_option(c("-v", "--valley-file"), type = "character", default = "valleys.csv",
+                                help = "name of the output file with the values for valleys of the KDE [default %default]"),
+                    make_option(c("-p", "--peak-file"), type = "character", default = "modes_basic_stats.csv",
+                                help = "name of the output file describing the peaks of the KDE [default %default]"),
+                    make_option(c("-s", "--bootstrap-file"), type = "character", default = "modes_bootstrap.csv",
+                                help = "name of the output file for the bootstrap results [default %default]"),
+                    make_option(c("-u", "--summary-file"), type = "character", default = "summary.csv",
+                                help = "name of the summary file for the KDE results [default %default]"),
+                    make_option(c("-f", "--no-warning-few-seqs"), action = "store_true", default = FALSE,
+                                help = paste("suppress warning in case the input file only contains few values ",
+                                             "[default %default]", sep = "")))
+
+op <- OptionParser(usage = "notos.r [options] spc_name_1 ... spc_name_N CpGoe_file_name_1 ... CpGoe_file_name_N",
+                   description = paste("\nDescription: Notos generates a histogram and a kernel density estimator from files containing CpGo/e ratios. ",
+                                       "Moreover, it determines the number of modes of the CpGo/e ratio for each input file. The input files ",
+                                       "can either be composed of \n",
+                                       "1) CpGo/e ratios separated by linebreaks or\n",
+                                       "2) sequence names and CpGo/e ratios with each sequence name put on a separate line together with its CpGo/e ratio ",
+                                       "and sequence and CpGo/e being separated by whitespaces on each line.", sep = ""),
+                   option_list = option_list)
+args <- parse_args(op, positional_arguments = c(2, Inf))
+num.args <- length(args$args)
+use.bstrp <- args$options$`bootstrap`
+supp.warn.few <- args$options$`no-warning-few-seqs`
+
+
+# ... check number of arguments
+# ... ... check number of mandatory arguments
+if (num.args < 2) {
+   stop("One species name and one file containing CpGo/e ratios have to be provided")
+}
+
+# ... ... check whether number of mandatory arguments is even
+if (num.args %% 2 != 0) {
+   stop("Number of arguments has to be even")
+}
+
+# ... ... check maximum fraction of CpGo/e ratios excluded as outliers
+frac.outl <- args$options$`frac-outl`
+if ((frac.outl <= 0) || (frac.outl >= 1)) {
+   stop("The maximum fraction of CpGo/e ratios excluded as outliers has to be greater than zero and less than one")
+}
+if (frac.outl >= 0.2) {
+   warning("The maximum fraction of CpGo/e ratios excluded as outliers has been set to a rather large value, resulting in the removal of many CpGo/e ratios")
+}
+
+
+# ... check numerical arguments
+# ... ... check minimum distance between modes
+min.dist <- args$options$`min-dist`
+if (min.dist < 0) {
+   stop("The minimum distance between modes has to be equal to or larger than zero")
+}
+if (min.dist >= 0.4) {
+   warning("The minimum distance between modes has been set to a rather large value, resulting in a strong reduction of the number of modes")
+}
+
+# ... ... check confidence level
+conf.lev <- args$options$`conf-level`
+if ((conf.lev <= 0) || (conf.lev >= 1)) {
+   stop("The level of the confidence intervals of the mode positions has to be larger than zero and smaller than one.")
+}
+if (conf.lev >= 0.995) {
+   warning("The level of the confidence intervals of the mode positions has been set to a rather high value, resulting in very broad confidence intervals")
+}
+
+# ... ... check minimum probability mass of a mode
+mode.mass <- args$options$`mode-mass`
+if ((mode.mass < 0) || (mode.mass >= 1)) {
+   stop("The minimum probability mass of a mode has to be larger than or equal to zero and smaller than one.")
+}
+if (mode.mass >= 0.3) {
+   warning("The minimum probability mass of a mode has been set to a rather large value, resulting in the elemination of a high number of modes.")
+}
+
+# ... ... check bandwidth constant
+band.width <- args$options$`band-width`
+if (band.width <= 0) {
+   stop("The bandwidth constant has to be positive")
+}
+if (band.width >= 5) {
+   warning("The bandwidth constant has to been set to a rather large value, resulting in a strong smoothing")
+}
+
+# ... ... check number of boostrap repetitions
+bstrp.reps <- args$options$`bootstrap-reps`
+if (bstrp.reps != round(bstrp.reps)) {
+  stop("The number of boostrap repetitions has to be a positive integer")
+}
+if (bstrp.reps <= 0) {
+   stop("The number of boostrap repetitions has to be positive")
+}
+if (bstrp.reps >= 10000) {
+   warning("The number of boostrap repetitions has been set to a rather large value, resulting in a long running time")
+}
+
+# ... check file name arguments
+# ... ... check histogram output file name
+outlier.hist.fname <- args$options$`outlier-hist-file`
+if ( file.exists(outlier.hist.fname) && (file.info(outlier.hist.fname)$isdir) ) {
+  stop(paste("File name for the outlier histogram output refers to a directory:", outlier.hist.fname))
+}
+v <- strsplit(outlier.hist.fname, split = ".", fixed = TRUE)[[1]]
+if ((length(v) == 1) || (v[ length(v) ] != "pdf")) {
+  warning(paste("File name for the outlier histogram output does not have a .pdf extension:", outlier.hist.fname))
+}
+g <- gregexpr(pattern ='/', outlier.hist.fname)[[1]]
+if (as.vector(g)[1] != -1) {
+  v <- as.vector(g)
+  d <- substr(outlier.hist.fname, 1, v[length(v)])
+  if (!file.exists(d)) {
+    stop(paste("Path to file for the outlier histogram output is not valid:", outlier.hist.fname))
+  }
+}
+
+# ... ... check outlier cutoff output file name
+cutoff.fname <- args$options$`cutoff-file`
+if ( file.exists(cutoff.fname) && (file.info(cutoff.fname)$isdir) ) {
+  stop(paste("File name for the outlier cutoff table output refers to a directory:", cutoff.fname))
+}
+v <- strsplit(cutoff.fname, split = ".", fixed = TRUE)[[1]]
+if (length(v) == 1) {
+  stop(paste("File name for the outlier cutoff table output does not have a file extension:", cutoff.fname))
+}
+#if (v[ length(v) ] != "xlsx") {
+#  warning(paste("File name for the outlier cutoff table output does not have a .xlsx extension:", cutoff.fname))
+#}
+g <- gregexpr(pattern ='/', cutoff.fname)[[1]]
+if (as.vector(g)[1] != -1) {
+  v <- as.vector(g)
+  d <- substr(cutoff.fname, 1, v[length(v)])
+  if (!file.exists(d)) {
+    stop(paste("Path to file for the outlier cutoff is not valid:", cutoff.fname))
+  }
+}
+
+# ... ... check KDE output file name
+kde.fname <- args$options$`kde-file`
+if ( file.exists(kde.fname) && (file.info(kde.fname)$isdir) ) {
+  stop(paste("File name for the KDE output refers to a directory:", kde.fname))
+}
+v <- strsplit(kde.fname, split = ".", fixed = TRUE)[[1]]
+if ((length(v) == 1) || (v[ length(v) ] != "pdf")) {
+  warning(paste("File name for the KDE output does not have a .pdf extension:", kde.fname))
+}
+g <- gregexpr(pattern ='/', kde.fname)[[1]]
+if (as.vector(g)[1] != -1) {
+  v <- as.vector(g)
+  d <- substr(kde.fname, 1, v[length(v)])
+  if (!file.exists(d)) {
+    stop(paste("Path to file for the KDE output is not valid:", kde.fname))
+  }
+}
+
+
+# ... ... check peak descriptives output file name
+peak.fname <- args$options$`peak-file`
+if ( file.exists(peak.fname) && (file.info(peak.fname)$isdir) ) {
+  stop(paste("File name for the peak descriptives refers to a directory:", peak.fname))
+}
+v <- strsplit(peak.fname, split = ".", fixed = TRUE)[[1]]
+if ((length(v) == 1) || (v[ length(v) ] != "csv")) {
+  warning(paste("File name for the peak descriptives does not have a .csv extension:", peak.fname))
+}
+g <- gregexpr(pattern ='/', peak.fname)[[1]]
+if (as.vector(g)[1] != -1) {
+  v <- as.vector(g)
+  d <- substr(peak.fname, 1, v[length(v)])
+  if (!file.exists(d)) {
+    stop(paste("Path to file for the peak descriptives is not valid:", peak.fname))
+  }
+}
+
+# ... ... check bootstrap results output file name
+bstrp.fname <- args$options$`bootstrap-file`
+if ( file.exists(bstrp.fname) && (file.info(bstrp.fname)$isdir) ) {
+  stop(paste("File name for the bootstrap results refers to a directory:", bstrp.fname))
+}
+v <- strsplit(bstrp.fname, split = ".", fixed = TRUE)[[1]]
+if ((length(v) == 1) || (v[ length(v) ] != "csv")) {
+  warning(paste("File name for the bootstrap results does not have a .csv extension:", bstrp.fname))
+}
+g <- gregexpr(pattern ='/', bstrp.fname)[[1]]
+if (as.vector(g)[1] != -1) {
+  v <- as.vector(g)
+  d <- substr(bstrp.fname, 1, v[length(v)])
+  if (!file.exists(d)) {
+    stop(paste("Path to file for the bootstrap results is not valid:", bstrp.fname))
+  }
+}
+
+# ... ... check summary results output file name
+summ.fname <- args$options$`summary-file`
+if ( file.exists(summ.fname) && (file.info(summ.fname)$isdir) ) {
+  stop(paste("File name for the bootstrap results refers to a directory:", summ.fname))
+}
+v <- strsplit(summ.fname, split = ".", fixed = TRUE)[[1]]
+if ((length(v) == 1) || (v[ length(v) ] != "csv")) {
+  warning(paste("File name for the bootstrap results does not have a .csv extension:", summ.fname))
+}
+g <- gregexpr(pattern ='/', summ.fname)[[1]]
+if (as.vector(g)[1] != -1) {
+  v <- as.vector(g)
+  d <- substr(summ.fname, 1, v[length(v)])
+  if (!file.exists(d)) {
+    stop(paste("Path to file for the bootstrap results is not valid:", summ.fname))
+  }
+}
+
+
+# ... ... check CpGo/e input file names
+num.spec <- num.args / 2
+spec.names <- args$args[1:num.spec]
+cpgoe.fnames <- args$args[(num.spec + 1):num.args]
+for (i in 1:length(cpgoe.fnames)) {
+  if (!file.exists(cpgoe.fnames[i])) {
+    stop(paste("CpGo/e file does not exist:", cpgoe.fnames[i]))
+  }
+  if (file.info(cpgoe.fnames[i])$isdir) {
+    stop(paste("CpGo/e file name refers to a directory:", cpgoe.fnames[i]))
+  }
+}
+
+valleys.fname <- args$options$`valley-file`	
+
+# remove outliers and output histograms
+# ... set up table with cutoff quantities
+tab.des <- data.frame(matrix(NA, nrow = num.spec, ncol = 6))
+names(tab.des) <- c("prop.zero", "prop.out.2iqr", "prop.out.3iqr",
+                    "prop.out.4iqr", "prop.out.5iqr", "used")
+rownames(tab.des) <- spec.names
+
+# ... set up figure
+t.height <- 6
+t.width <- 20
+pdf(outlier.hist.fname, height = t.height,width = t.width, paper = "special")
+par(mfrow = c(1, 3), mgp = c(2, 0.5, 0), mar = c(4.0, 3.0, 1.5, 1))
+tmp.fnames <- c()
+
+# ... iterate through species
+for (i in 1:num.spec) {
+  fname <- cpgoe.fnames[i]
+  obs <- read.CpGoe(fname, TRUE)
+
+
+  # check CpGo/e ratios
+  for (j in 1:length(obs)) {
+    # is format legal?
+    val <- as.numeric( obs[j] )
+    err.str <- paste("Observation", i, "in", fname)
+    if (!is.finite(val)) {
+      stop(paste(err.str, "could not be converted to a number:", obs[j]))
+    }
+
+    # is ratio too small / large?
+    if (val < 0) {
+      stop(paste(err.str, "is negative:", val))
+    } else {
+      if (val > MAX.CPGOE) {
+        warning(paste(err.str   , "is suspiciously large:", val, "\nthis value is replaced by", MAX.CPGOE))
+      }
+    }
+  }
+
+  # process outliers and store the results
+  obs.org <- obs
+  l <- proc.outliers(obs, frac.outl)
+  if (!l[["valid"]]) {
+    stop( paste("Too few values in", fname, "(less than 3) after removal of zeros"), call. = FALSE )
+  }
+  tab.des[i, "prop.zero"] <- l[["prop.zero"]]
+  mu.obs <- l[["mu.obs"]]
+  me.obs <- l[["me.obs"]]
+  ul.mu <- l[["ul.mu"]]
+  ll.mu <- l[["ll.mu"]]
+  ul.me <- l[["ul.me"]]
+  ll.me <- l[["ll.me"]]
+  tab.des[i, "prop.out.2iqr"] <- l[["prop2"]]
+  tab.des[i, "prop.out.3iqr"] <- l[["prop3"]]
+  tab.des[i, "prop.out.4iqr"] <- l[["prop4"]]
+  tab.des[i, "prop.out.5iqr"] <- l[["prop5"]]
+  obs.cl <- l[["obs.cl"]]
+  obs.nz <- l[["obs.nz"]]
+  tab.des[i, "used"] <- l[["used"]]
+  tab.des[i, "no.obs.raw"] <- length(obs.org)
+  tab.des[i, "no.obs.nozero"] <- length(obs.nz)
+  tab.des[i, "no.obs.clean"] <- length(obs.cl)
+  usedindex <- substr(l[["used"]],1,1)
+  # Histograms
+  # ... histogram 1: original data with zeros
+  t.breaks <- seq(0, max(obs.org) + 1, by = 0.03)
+  t.xlim <- c(0, ul.me["5"] + 0.1)
+  hist(obs.org, breaks = t.breaks, xlim = t.xlim, xlab = "CpG o/e", main = "",
+      sub = "Original data", prob = TRUE,
+	  col = grey(0.9), border = grey(0.6))
+  mtext(paste(spec.names[i]), side = 3, adj = 0)
+
+
+  # ... histogram 3: median / iqr based
+  t.lty <- rep(3, 4)
+  t.lty[usedindex] <- 1
+
+  hist(obs.nz, breaks = t.breaks, xlim = t.xlim, xlab = "CpG o/e", main = "",
+      sub = "Data without zeros, Q1/3 +- k*IQR, k=2,...,5", prob = TRUE,
+	  col = grey(0.9), border = grey(0.6))
+  abline(v = me.obs, col = 'blue', lwd = 2)
+  abline(v = c(ll.me, ul.me), col = "red", lty = rep(t.lty, 2))
+
+  # ... histogram 4: cleaned data
+  hist(obs.cl, breaks = t.breaks, xlim = t.xlim, xlab = "CpG o/e", main = "",
+      sub = "Cleaned data", prob = TRUE,
+	  col = grey(0.9), border = grey(0.6))
+  abline(v = me.obs, col = 'blue', lwd = 2)
+  abline(v = c(ll.me[usedindex], ul.me[usedindex]), col = "red")
+}
+invisible(dev.off())
+
+# output cutoff quantities
+write.table(tab.des, file = cutoff.fname, sep = "\t", col.names=NA)
+
+# plot KDE and output quantities characterizing the peaks and the bootstrap results
+# ... table with quantities characterizing the peaks
+v <- col.names.peaks()
+tab1.m <- data.frame(matrix(NA, nrow = num.spec, ncol = length(v)))
+names(tab1.m) <- col.names.peaks()
+rownames(tab1.m) <- spec.names
+
+# ... table for the bootstrap
+tab2.m <- data.frame(matrix(NA, nrow = num.spec, ncol = 7))
+names(tab2.m) <- col.names.bs()
+rownames(tab2.m) <- spec.names
+
+# summary table
+sum1.m <-  data.frame(matrix(NA, nrow = num.spec, ncol = 13)) 
+names(sum1.m) <- c("Modes", "Skewness", "Variance", "Modes too close", "Peak1", "Peak2", "Peak3", "Peak4", "Peak5", "Peak6", "Peak7", "Peak8", "Peak9")
+rownames(sum1.m) <- spec.names
+
+# ... plotting
+t.height <- 6
+t.width <- 20
+pdf(kde.fname, height = t.height,width = t.width, paper = "special")
+for (i in 1:num.spec) {
+  # read in GcGo/e ratios
+  obs <- read.CpGoe(cpgoe.fnames[i], FALSE)
+  l <- proc.outliers(obs, frac.outl)
+  obs.cl <- l[["obs.cl"]]
+
+  # check number of values
+  fname <- cpgoe.fnames[i]
+  if (length(obs.cl) < 3) {
+    stop( paste("Too few values in", fname, "(less than 3) after removal of outliers and zeros"), call. = FALSE )
+  }
+  if (!supp.warn.few & length(obs.cl) < 250) {
+    warning( paste(fname, " contains only few values (", length(obs.cl), ") after removal of outliers and zeros, which may lead to unreliable results", sep = ""), call. = FALSE )
+  }
+
+  # plotting
+  l <- plot.KDE(obs.cl, t.name = spec.names[i], bs.cis = use.bstrp, bstrp.reps = bstrp.reps, conf.lev = conf.lev,
+                min.dist = min.dist, mode.mass = mode.mass, band.width = band.width)
+  tab1.m[i, ] <- l$tab.des
+  sum1.m[i, ] <- l$tab.des[c(1, 4, 33, 30, 10+(2*0:8))]
+  if (use.bstrp) {
+    tab2.m[i, ] <- l$tab.bs
+  }
+  valleys = l$valleys
+}
+invisible(dev.off())
+#sessionInfo()
+
+# ... output quantities in tables
+write.table(sum1.m, file = summ.fname, sep = "\t", col.names = NA)
+write.table(tab1.m, file = peak.fname, sep = "\t", col.names=NA)
+write.table(valleys, file = valleys.fname, sep = "\t", col.names=NA)
+if (use.bstrp) {
+    write.table(tab2.m, file = bstrp.fname, sep = "\t", col.names=NA)
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/KDEanalysis.xml	Thu Sep 07 08:51:57 2017 -0400
@@ -0,0 +1,80 @@
+<tool id="notos" name="Analyse CpGo/e ratios" version="1.0.0">
+    <requirements>
+        <requirement type="package" version="3.2.1">R</requirement>
+        <requirement type="package" version="1.0.0">notos</requirement>
+    </requirements>
+    <stdio>
+        <exit_code range="1:" />
+    </stdio>
+    <command><![CDATA[
+		Rscript ${__tool_directory__}/KDEanalysis.r
+		-o $fracOutl
+		-d $minDist
+		-c $confLevel
+		-m $modeMass
+		-b $bandWidth
+		#if $bootstrap == "TRUE"
+		-B
+		#end if
+		-r $BSrep
+		#if $nofew == "TRUE"
+			-f
+		#end if
+		"$species"
+		$cpgoe
+    ]]></command>
+		<inputs>
+			<param name="species" size="30" type="text" value="my_species" label="Species name" />
+		    <param name="cpgoe" type="data" format="tabular" />
+			<param name="fracOutl" type="float" value="0.01" help="maximum fraction of CpGo/e ratios excluded as outliers" label= "max fraction of CpGo/e ratios excluded as outliers" />
+			<param name="minDist" type="float" value="0.2" help="minimum distance between modes. Modes that are closer are joined" label= "min distance between modes to join" />
+			<param name="confLevel" type="float" value="0.95" help="level of the confidence intervals of the mode positions" label= "level of the confidence intervals of the mode positions" />
+			<param name="modeMass" type="float" value="0.05" help="minimum probability mass of a mode " label= "minimum probability mass of a mode" />
+			<param name="bandWidth" type="float" value="1.06" help="bandwidth constant for kernels " label= "bandwidth constant for kernels" />
+			<param name="bootstrap" type="boolean" truevalue="TRUE" falsevalue="FALSE" help="calculate confidence intervals of mode positions using bootstrap" label= "bootstrap confidence intervals?" />
+			<param name="BSrep" type="integer" value="1500" help="number of bootstrap repetitions " label= "number of bootstrap repetitions " />
+			<param name="nofew" type="boolean" truevalue="TRUE" falsevalue="FALSE" help="Do not print warning message when few datapoint are given." label= "Supress few datapoint warning" />
+		</inputs>
+		<outputs>
+			<data name="summary" format="tabular" from_work_dir="summary.csv" label="Summary on ${on_string}" />
+			<data name="outlierHist" format="pdf" from_work_dir="outliers_hist.pdf" label="Outlier Histogram on ${on_string}"/>
+			<data name="cutoff" format="tabular" from_work_dir="outliers_cutoff.csv" label="Outlier cutoff on ${on_string}" />
+			<data name="peaks" format="tabular" from_work_dir="modes_basic_stats.csv" label="Peaks on ${on_string}" />
+			<data name="kde" format="pdf" from_work_dir="KDE.pdf" label="KDE analysis on ${on_string}" />
+		</outputs>
+    <tests>
+        <test>
+            <param name="cpgoe" value="10_std_unif.txt"/>
+            <output name="cutoff1" file="outliers_cutoff.csv"/>
+			<!--
+            <output name="outlierHist" file="outliers_hist.pdf"/>
+            <output name="kde" file="KDE.pdf"/>
+			-->
+        </test>
+    </tests>
+    <help><![CDATA[
+Model the distribution of CpG o/e ratios using Kernel Density Estimation.
+
+Parameters::
+
+  "-o", "--frac-outl"			maximum fraction of CpGo/e ratios excluded as outliers [default 0.01]
+  "-d", "--min-dist"			minimum distance between modes, modes that are closer are joined [default 0.2]
+  "-c", "--conf-level"			level of the confidence intervals of the mode positions [default 0.95]
+  "-m", "--mode-mass"			minimum probability mass of a mode [default 0.05]
+  "-b", "--band-width"			bandwidth constant for kernels [default 1.06]
+  "-B", "--bootstrap"			calculate confidence intervals of mode positions using bootstrap.
+  "-r", "--bootstrap-reps"		number of bootstrap repetitions [default 1500]
+  "-p", "--peak-file"			name of the output file describing the peaks of the KDE [default peaks.csv]
+  "-s", "--bootstrap-file"		Name of the output file with bootstrap values [default "bootstrap.csv"]
+  "-H", "--outlier-hist-file"	Outliers histogram file [default outliers_hist.pdf]
+  "-C", "--cutoff-file"			Outliers cutoff file [default outliers_cutoff.csv]
+  "-k", "--kde-file"			Kernel density estimation graph [default KDE.pdf]
+
+
+    ]]></help>
+    <citations>
+        <citation>
+            <citation type="doi">10.1101/180463</citation>
+        </citation>
+    </citations>
+</tool>
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LICENSE	Thu Sep 07 08:51:57 2017 -0400
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
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+
+  To protect your rights, we need to prevent others from denying you
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+you modify it: responsibilities to respect the freedom of others.
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+  For example, if you distribute copies of such a program, whether
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+
+  Developers that use the GNU GPL protect your rights with two steps:
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+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
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+  The precise terms and conditions for copying, distribution and
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+
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/readme.rst	Thu Sep 07 08:51:57 2017 -0400
@@ -0,0 +1,173 @@
+Notos
+=====
+
+Notos is a suite that calculates CpN o/e ratios (e.g., the commonly used CpG o/e ratios) for a set of nucleotide sequences and uses Kernel Density Estimation (KDE) to model the obtained distribution.
+
+It consists of two programs, CpGoe.pl is used to calculate the CpN o/e ratios and KDEanalysis.r estimates the model. 
+In the following, these two programs are described briefly.
+
+CpGoe.pl
+--------
+
+
+This program will calculate CpN o/e ratios on nucleotide multifasta files.
+For each sequence that is found in the file it will output the sequence name followed by the CpN o/e ratio, where N can be any of the nucletides A, C, G or T, into a TAB separated file.
+
+An example call would be:
+
+    perl CpGoe.pl -f input_species.fasta -a 1 -c CpG -o input_species_cpgoe.csv -m 200
+	
+
+The available contexts (-c) are CpG, CpA, CpC, CpT. Default is CpG. 
+
+The available algorithms (-a) for calculating the CpNo/e ratio are the following (here shown for CpG o/e)::
+
+    1 => (CpG / (C * G)) * (L^2 / L-1)
+    2 => (CpG / (C * G)) * L
+    3 => (CpG / L) / ((C + G) / L)^2
+    4 => (CpG / (C + G)/2)^2
+		
+Here L denotes the length of the sequence, CpG represents the count of CG dinucleotide, C and G represent the count for the respective bases.
+
+KDEanalysis.r
+-------------
+
+This program carries out two steps.
+First, the data preparation step, mainly to remove data artifacts.
+Secondly, the mode detection step, which is baesd on a KDE modelling approach.
+
+Example basic usage on command line:
+
+    Rscript ~/src/github/notos/KDEanalysis.r "Input species" input_species_cpgoe.csv
+
+	
+In the above case "Input species" will be used to name the graphs that are generated as well as an identifier for each sample.
+It has to be surrounded by " if the name of the species contains spaces.
+The input of KDEanalysis.r is of the same format as the output of CpGoe.pl.
+
+Any of the following parameters can be used
+
++--------+---------------------+-----------------------------------------------------------------------------------------+
+| Option | Long option         | Description                                                                             |
++--------+---------------------+-----------------------------------------------------------------------------------------+
+| -o     | --frac-outl         | maximum fraction of CpGo/e ratios excluded as outliers [default 0.01]                   |
++--------+---------------------+-----------------------------------------------------------------------------------------+
+| -d     | --min-dist          | minimum distance between modes, modes that are closer are joined [default 0.2]          |
++--------+---------------------+-----------------------------------------------------------------------------------------+
+| -c     | --conf-level        | level of the confidence intervals of the mode positions [default 0.95]                  |
++--------+---------------------+-----------------------------------------------------------------------------------------+
+| -m     | --mode-mass         | minimum probability mass of a mode [default 0.05]                                       |
++--------+---------------------+-----------------------------------------------------------------------------------------+
+| -b     | --band-width        | bandwidth constant for kernels [default 1.06]                                           |
++--------+---------------------+-----------------------------------------------------------------------------------------+
+| -B     | --bootstrap         | calculate confidence intervals of mode positions using bootstrap.                       |
++--------+---------------------+-----------------------------------------------------------------------------------------+
+| -r     | --bootstrap-reps    | number of bootstrap repetitions [default 1500]                                          |
++--------+---------------------+-----------------------------------------------------------------------------------------+
+| -p     | --peak-file         | name of the output file describing the peaks of the KDE [default modes_basic_stats.csv] |
++--------+---------------------+-----------------------------------------------------------------------------------------+
+| -s     | --bootstrap-file    | Name of the output file with bootstrap values [default "modes_bootstrap.csv"]           |
++--------+---------------------+-----------------------------------------------------------------------------------------+
+| -H     | --outlier-hist-file | Outliers histogram file [default outliers_hist.pdf]                                     |
++--------+---------------------+-----------------------------------------------------------------------------------------+
+| -C     | --cutoff-file       | Outliers cutoff file [default outliers_cutoff.csv]                                      |
++--------+---------------------+-----------------------------------------------------------------------------------------+
+| -k     | --kde-file          | Kernel density estimation graph [default KDE.pdf]                                       |
++--------+---------------------+-----------------------------------------------------------------------------------------+
+
+Of special interest is the -B parameter that will trigger the bootstrap calculations.
+Default settings have been thoroughly calibrated through extensive testing, so we would advice to modify them only if you know what you are doing.
+
+Output: Both the data preparation and the mode detection step return results in form of CSV files and figures to the user.
+The two figures illustrate the results of the data cleaning and mode detection step, respectively.
+The contents of the CSV files is described in the following.
+
+1. outliers_cutoff.csv. The columns of this file contain
+
++---------------+----------------------------------------------------------------------------------------------------------------+
+| Column        | description                                                                                                    |
++---------------+----------------------------------------------------------------------------------------------------------------+
+| Name          | name of the file analyzed                                                                                      |
++---------------+----------------------------------------------------------------------------------------------------------------+
+| prop.zero     | proportion of observations equal to zero excluded (relative to original sample)                                |
++---------------+----------------------------------------------------------------------------------------------------------------+
+| prop.out.2iqr | proportion of values equal excluded if 2 * IQR was used, relative to sample after exclusion of zeros (0 - 100) |
++---------------+----------------------------------------------------------------------------------------------------------------+
+| prop.out.3iqr | proportion of values equal excluded if 3 * IQR was used, relative to sample after exclusion of zeros (0 - 100) |
++---------------+----------------------------------------------------------------------------------------------------------------+
+| prop.out.4iqr | proportion of values equal excluded if 4 * IQR was used, relative to sample after exclusion of zeros (0 - 100) |
++---------------+----------------------------------------------------------------------------------------------------------------+
+| prop.out.5iqr | proportion of values equal excluded if 5 * IQR was used, relative to sample after exclusion of zeros (0 - 100) |
++---------------+----------------------------------------------------------------------------------------------------------------+
+| used          | IQR used for exclusion of outliers / extreme values                                                            |
++---------------+----------------------------------------------------------------------------------------------------------------+
+| no.obs.raw    | number of observations in the original sample                                                                  |
++---------------+----------------------------------------------------------------------------------------------------------------+
+| no.obs.nozero | number of observations in sample after excluding values equal to zero                                          |
++---------------+----------------------------------------------------------------------------------------------------------------+
+| no.obs.clean  | number of observations in sample after excluding outliers / extreme values                                     |
++---------------+----------------------------------------------------------------------------------------------------------------+
+
+2. modes_basic_stats.csv. We use the following notation: sigma - standard deviation, mu - mean, nu - median, Mo - mode, Q_i - the i-th quartile, q_s - the s % quantile. The columns of this file contain
+
++-----------------------------------+------------------------------------------------------------------------------------+
+| Column                            | description                                                                        |
++-----------------------------------+------------------------------------------------------------------------------------+
+| Name                              | name of the file analyzed                                                          |
++-----------------------------------+------------------------------------------------------------------------------------+
+| Number of modes                   | number of modes without applying any exclusion criterion                           |
++-----------------------------------+------------------------------------------------------------------------------------+
+| Number of modes (5% excluded)     | number of modes after exclusion of those with less then 5% probability mass        |
++-----------------------------------+------------------------------------------------------------------------------------+
+| Number of modes (10% excluded)    | number of modes after exclusion of those with less then 10% probability mass       |
++-----------------------------------+------------------------------------------------------------------------------------+
+| Skewness                          | Pearson's moment coefficient of skewness E(X-mu/sigma)^3                           |
++-----------------------------------+------------------------------------------------------------------------------------+
+| Mode skewness                     | Pearson's first skewness coefficient (mu - Mo)/sigma                               |
++-----------------------------------+------------------------------------------------------------------------------------+
+| Nonparametric skew                | (mu - nu)/sigma                                                                    |
++-----------------------------------+------------------------------------------------------------------------------------+
+| Q50 skewness                      | Bowley's measure of skewness / Yule's coefficient (Q_3 + Q_1 - 2Q_2) / (Q_3 - Q_1) |
++-----------------------------------+------------------------------------------------------------------------------------+
+| Absolute Q50 mode skewness        | (Q_3 + Q_1) / 2 - Mo                                                               |
++-----------------------------------+------------------------------------------------------------------------------------+
+| Absolute Q80 mode skewness        | (q_90 + q_10) / 2 - Mo                                                             |
++-----------------------------------+------------------------------------------------------------------------------------+
+| Peak i, i = 1,..., 10             | location of peak i                                                                 |
++-----------------------------------+------------------------------------------------------------------------------------+
+| Probability Mass i, i = 1,..., 10 | probability mass assigned to peak i                                                |
++-----------------------------------+------------------------------------------------------------------------------------+
+| Warning close modes               | flag indicating that modes lie too close. The default threshold is 0.2             |
++-----------------------------------+------------------------------------------------------------------------------------+
+| Number close modes                | number of modes lying too close, given the threshold                               |
++-----------------------------------+------------------------------------------------------------------------------------+
+| Modes (close modes excluded)      | number of modes after exclusion of modes that are too close                        |
++-----------------------------------+------------------------------------------------------------------------------------+
+| SD                                | sample standard deviation sigma                                                    |
++-----------------------------------+------------------------------------------------------------------------------------+
+| IQR 80                            | 80% distance between the 90 % and 10 % quantile                                    |
++-----------------------------------+------------------------------------------------------------------------------------+
+| IQR 90                            | 90% distance between the 95 % and 5 % quantile                                     |
++-----------------------------------+------------------------------------------------------------------------------------+
+| Total number of sequences         | total number of sequences / CpG o/e ratios used for this analysis step             |
++-----------------------------------+------------------------------------------------------------------------------------+
+
+3. modes_bootstrap.csv. The columns of this optional file resulting from the bootstrap procedure contains:
+
++-------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
+| Column                                    | description                                                                                                                                |
++-------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
+| Name                                      | name of the file analyzed                                                                                                                  |
++-------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
+| Number of modes (NM)                      | number of modes detected for the original sample                                                                                           |
++-------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
+| % of samples with same NM                 | proportion of bootstrap samples with the same number of modes (0 - 100)                                                                    |
++-------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
+| % of samples with more NM                 | proportion of bootstrap samples a higher number of modes (0 - 100)                                                                         |
++-------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
+| % of samples with less NM                 | proportion of bootstrap samples a lower number of modes (0 - 100)                                                                          |
++-------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
+| no. of samples with same NM               | number of bootstrap samples with the same number of modes                                                                                  |
++-------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
+| % BS samples excluded by prob.~mass crit. | proportion of bootstrap samples excluded due to strong deviations from the probability masses determined for the original sample (0 - 100) |
++-------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test-data/10_std_unif.txt	Thu Sep 07 08:51:57 2017 -0400
@@ -0,0 +1,11 @@
+# 10 values that are uniformly distributed on [0,1]
+0.16603589
+0.77443410
+0.98018264
+0.05113997
+0.29865607
+0.45602460
+0.75859942
+0.44160652
+0.04546894
+0.05510023
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test-data/9_seqs.fa	Thu Sep 07 08:51:57 2017 -0400
@@ -0,0 +1,62 @@
+>seq1
+aatttatagctcttaaaaaaaagtataaccctacctaccctggacgtacgatagagggatttagagacc
+tttcttccacgttagaacgacgacgtaaggacgaaagggaggtttctttttcgccttacgccgaggcgt
+aaagggtggggtattttcacgcgttcgtggtacggtagaaatagggtcacatcttccacgttagaagtag
+aagtagaagtaggtcgtctacacgcggaagtctgcctatttattcctcttacctagacgtagacccgcgt
+ctacttgttctcgggtgtagatgtactatcccgcgaacggtcgtaggcctaactagacggtacctatcctat
+>seq2
+cgcttcggagaactagacgtggaaaacgagcggcggtagaaacgtaggaataggtgtaccgtcgtaccctc
+tggacgacctaggtctgtctatgtattctatctcctccggtagacgtagaaaaacgaatactcggtctatcc
+tcgggcagacatagacgcgtccacctccgaatctaaacagacgggtatacgataaatctacgtcgtcggaga
+cccgacgaacgaccatggaggtccgcgtagaatcgcgtcgatgtacccgtcgcggcggatccccgccggagg
+agtggtcacggttggtacttcctcgacgcgatctatcgagcgggtaaacaactacgaaggaaaaaaaagcg
+agcggtattccctatatgggttttaactatttatataggtataaaaacgtgacgcgtaacggtcagaaa
+>seq3
+aatacgacatcgatcgtagataggattagttacacgccttgagggtaggcgtacgaaggacaag
+gatatcgtcctcgagtagtttgccgttctttaccttaagactgtctctcgccgaaagatcagacgttctctt
+acacatttcacccacttggacggttatgtctagactcttcacacattccgtgtcgaccagggtagatccgat
+aatatgactgcgtctcgtcgcttgagttatacgcgggacaagcgccgcggttccgtacgtcgtttcggttac
+gttgacgcgactgcatttgatatctacggacacttcacacgtgtcgagtagggcgagcgcctctgtacggtt
+catagacacgggattcgtatctctccaaggagcgtcgctggacagtcggacgtagacgtggcgtcctttgac
+>seq4
+gtgttcggatatcgccttaacggtaggacatcccgtaaatccgaacgtgacggagagtcctcctccgacgat
+cgtgtggtaagtacttccgatcacgaaaccggttagaaacgattcgtcgttttcgtcgtactcgtattcctc
+gctaagatcgtcgggctgctccgtacccgtcgcgccatcgtcttcgttttcgtcttctgtatacgcggattc
+aatagtcgtacgcagaccctgacacggcgtgtcgcttccggtagtcctctttgtaattttggccacgacgtc
+tattcccatgtatcggacatcttcgccttgtctgcagatgcccttcgtcgcgagggtcgcggccaggcacgc
+gaataatacacacaggcgtttcatgatagagttcttctatacgcccac
+>seq5
+gttttattataattcgacttttttttaagaatttaactagaagaaaatccgtaatctatgaaacgagtcta
+catcgtttgggtgagggaaagagacggaggcgtgtaccccaatggtattccacgaagtcgtcgacctcctcg
+ggatgattactgtcgctgtactcgatatctacgttcacgtcggacaggcaccctcctatcacggtaatcgtt
+tccgaatgagataggacgccgaccccgtcgctcgtcctcggtatagtacgcacggcgtctccctcgacgcac
+cgtatctctatattaagcgtacacattttggtcgtattctggtacctatccatcccggtgaagaatcctccc
+gcgccctcgctgccgctcgttccgtagtattccgtgtggaagacgggatcacaatccgtgtgatttagcgta
+>seq6
+accgagaactccgacgttttaaccacttcgttgggtccggcggtcgtcgtacaagacgtgtcgtttacggga
+tataggttgaattccacgctgatgtagttaaacgacgaggtacacgtctccgtggaggatacggcgtcggaa
+tacgtgtaccgaggacattttgtgcagagcacgtcgcccgtacgcgtatgtccggagacgccataccccgcg
+ggacacttcgttttgggagcgcatatcctacacccctcctgtcctttcaacagacaatagttccccgcagaa
+cagtcgcagactctatcgcgggttttatcacacgattgagactcggataggtggcctgtgcaccgccctcga
+caacttacgcacgcgggagcgtggttcgtactcgccgtaaaggtttcgttcttgcacggagaacataccgtg
+>seq7
+tcggacccgggtccgcataacctagaggcgtacgacccgggaggacaggaggtacaacacagtccgtccttt
+tcgtagtcgttccctctacattttcctcgatccgcgccatacggggcaccgcccccgtatacgcacgcgacg
+tacgcgagtagtagcgttaaacgaaacatgatacatataccgtagttatttttatattttacacgaagag
+aaaaagacgtagaaggtgccaattagagatgccaattagagagataaaaaccgaattagagaggagcc
+aattaggagccgaattagagaggagccaattaggagccgaattagagaggag
+ccaattagtcgtcacgacgttcctgagagcaaaggcgttgtaaacgaatattaatcacggacctgagatgcg
+>seq8
+ggacctcgtagtcggtgatcaatctcatgaacaactcgatcactctcaccgaggtggggataggatcgtcgt
+acccccagtactcggcgacccgcgccaataagccaatgatggcgcaggcctcggtgatgtaactgtcgtgac
+gcaacatagctcgaatgagagattcggaactgtcgacgtgttcgtacgagcatcggacgagccaacgcacgt
+tgtcacgaaacacgatctccgcgtcccttttgaaagactcgaacacggcaaacaagcgacccgccgattccc
+tatccctgaacggggtagccgaccatctgagatagtcctgaaccgccagaatcacgctgtcgtccgcgccga
+attcgttcctacgcacatagaaagtcatggtcgcaggaatgaaaggaaacgttcgagaatggctcgaacacc
+>seq9
+gttaagtagtgtgttattttttcatttattctaaagtctccatcatgtcgaagaatcccttcttcaacggat
+aggacgagggttgtttagtgttgttattacactcgtagc
+gtttaaacgggttcggtatcttcatgaaatcgaacatgccgtttaattcgttcgcgtttaagggttccttgg
+gaatggggggacaatcggccgggacaacgacccggtcgtcgtccttcttgggatcgggttcgcaca
+cgggattgagttccccgaacatgaaagacacgagtcggttgatgggatacatcagcagcgtatagacgctgt
+acacgaacagattgcatagtctcgccaggtaaaatacgcacaacatacatagtcgcgcgatgctatttacca
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tool_dependencies.xml	Thu Sep 07 08:51:57 2017 -0400
@@ -0,0 +1,51 @@
+<?xml version="1.0"?>
+<tool_dependency>
+    <package name="R" version="3.2.1">
+        <repository changeset_revision="d9f7d84125b7" name="package_r_3_2_1" owner="iuc" prior_installation_required="True" toolshed="https://toolshed.g2.bx.psu.edu" />
+    </package>
+    <package name="libxml2" version="2.9.1">
+        <repository changeset_revision="45b16a3ab504" name="package_libxml2_2_9_1" owner="iuc" prior_installation_required="True" toolshed="https://toolshed.g2.bx.psu.edu" />
+    </package>
+    <package name="notos" version="1.0.0">
+        <install version="1.0">
+            <actions>
+                <action type="setup_r_environment">
+                    <repository changeset_revision="d9f7d84125b7" name="package_r_3_2_1" owner="iuc" toolshed="https://toolshed.g2.bx.psu.edu">
+                        <package name="R" version="3.2.1" />
+                    </repository>
+                    <!-- libxml2 needs to be sourced after R because R also was compiled against a different version of libxml2 -->
+                    <repository changeset_revision="45b16a3ab504" name="package_libxml2_2_9_1" owner="iuc" toolshed="https://toolshed.g2.bx.psu.edu">
+                        <package name="libxml2" version="2.9.1" />
+                    </repository>
+                    <package sha256sum="f920baa2a0ef7082155c8b666851af0c77534af8b2ca0cd067e7d56fdf3ec501">
+						https://github.com/cche/KDEAnalysis_deps/blob/master/getopt_1.20.0.tar.gz?raw=true
+                    </package>
+                    <package sha256sum="bca93c8646b731758f1cc888ee6c25e8c1ecf2364d7f556489bd879413d20abd">
+						https://github.com/cche/KDEAnalysis_deps/blob/master/optparse_1.3.2.tar.gz?raw=true
+                    </package>
+                    <package sha256sum="ae4ea23385776eb0c06c992a3da6b0256a6c84558c1061034c5a1fbdd43d05b8">
+						https://github.com/cche/KDEAnalysis_deps/blob/master/iterators_1.0.8.tar.gz?raw=true
+                    </package>
+                    <package sha256sum="1ef03f770f726a62e3753f2402eb26b226245958fa99d570d003fc9e47d35881">
+						https://github.com/cche/KDEAnalysis_deps/blob/master/foreach_1.4.3.tar.gz?raw=true
+                    </package>
+                    <package sha256sum="70024b6950025cc027022ee409f382e5ad3680c0a25bcd404bfc16418be8add5">
+						https://github.com/cche/KDEAnalysis_deps/blob/master/doParallel_1.0.10.tar.gz?raw=true
+                    </package>
+                    <package sha256sum="2a3b81e60dafdd092d2bdd3513d7038855ca7d113dc71df1229f7518382a3e39">
+						https://github.com/cche/KDEAnalysis_deps/blob/master/moments_0.14.tar.gz?raw=true
+                    </package>
+                    <package sha256sum="7f430cf3ebb95bac806fbf093fb1e2112deba47416a93be8d5d1064b76bc0015">
+						https://github.com/cche/KDEAnalysis_deps/blob/master/sfsmisc_1.1-0.tar.gz?raw=true
+                    </package>
+                </action>
+                <action type="set_environment">
+                    <environment_variable action="append_to" name="R_LIBS">$INSTALL_DIR</environment_variable>
+                </action>
+            </actions>
+        </install>
+        <readme>
+			***CHANGE THIS*****
+        </readme>
+    </package>
+</tool_dependency>