view abims_xcms_fillPeaks.xml @ 2:5815e6e11f9b draft

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<tool id="abims_xcms_fillPeaks" name="xcms.fillPeaks" version="2.0.2">

    <description>Integrate the signal in the region of that peak group not represented and create a new peak</description>

    <requirements>
        <requirement type="package" version="3.1.2">R</requirement>
        <requirement type="binary">Rscript</requirement>
        <requirement type="package" version="1.44.0">xcms</requirement>
        <requirement type="package" version="2.1">xcms_w4m_script</requirement>
    </requirements>
    
    <stdio>
        <exit_code range="1:" level="fatal" />
    </stdio>

    <command>
        xcms.r xfunction fillPeaks image $image method $method &amp;&amp; mv fillPeaks.RData $xsetRData; cat xset.log
    </command>

    <inputs>
        <param name="image" type="data" format="rdata.xcms.group,rdata" label="xset RData file" help="output file from another function xcms (group)" />
        <param name="method" type="select" label="Filling method" help="[method] See the help section below">
            <option value="chrom" selected="true">chrom</option>
            <option value="MSW" >MSW</option>
        </param>
    </inputs>

    <outputs>
        <data name="xsetRData" format="rdata.xcms.fillpeaks" label="${image.name[:-6]}.fillPeaks.RData" />
    </outputs>
    
    <tests>
        <test>
            <param name="image" value="xset.group.retcor.group.RData"/>
            <param name="method" value="chrom"/>
            <output name="xsetRData" file="xset.group.retcor.group.fillPeaks.RData" />
        </test>
    </tests>

    <help>

        
.. class:: infomark

**Authors**  Colin A. Smith [e-mail], Ralf Tautenhahn [e-mail], Steffen Neumann [e-mail], Paul Benton [e-mail] and Christopher Conley [e-mail] 

.. class:: infomark

**Galaxy integration** ABiMS TEAM - UPMC/CNRS - Station biologique de Roscoff and Yann Guitton [e-mail] - part of Workflow4Metabolomics.org [W4M]

 | Contact [e-mail] for any questions or concerns about the Galaxy implementation of this tool.


---------------------------------------------------

==============
Xcms.fillPeaks
==============

-----------
Description
-----------

For each sample, identify peak groups where that sample is not
represented. For each of those peak groups, integrate the signal
in the region of that peak group and create a new peak.

According to the type of raw-data there are 2
different methods available. for filling gcms/lcms data the method
"chrom" integrates raw-data in the chromatographic domain, whereas
"MSW" is used for peaklists without retention-time information
like those from direct-infusion spectra.



-----------------
Workflow position
-----------------


**Upstream tools**

========================= ================= ================== ==========
Name                      output file       format             parameter
========================= ================= ================== ==========
xcms.group                xset.group.RData  rdata.xcms.group   RData file
========================= ================= ================== ==========


**Downstream tools**

+---------------------------+------------------+-----------------------+
| Name                      | Output file      | Format                |
+===========================+==================+=======================+
|xcms.diffreport            | xset.retcor.RData| rdata.xcms.fillpeaks  |
+---------------------------+------------------+-----------------------+
|xcms.annotateDiffreport    | xset.retcor.RData| rdata.xcms.fillpeaks  |
+---------------------------+------------------+-----------------------+

The output file **xset.fillpeaks** is an RData file. You can continue your analysis using it in **xcms.diffreport** or **xcms.annotateDiffreport** tool as an next step of the workflow.


**General schema of the metabolomic workflow**

.. image:: xcms_fillpeaks_workflow.png



-----------
Input files
-----------

+---------------------------+-----------------------+
| Parameter : num + label   |   Format              |
+===========================+=======================+
| 1 : RData file            |   rdata.xcms.group    |
+---------------------------+-----------------------+


----------
Parameters
----------


Method
------

**chrom**

    | This method produces intensity values for those missing samples by integrating raw data in peak group region. In a given group, the start and ending retention time points for integration are defined by the median start and end points of the other detected peaks. The start and end m/z values are similarly determined. Intensities can be still be zero, which is a rather unusual intensity for a peak.  This is the case if e.g. the raw data was threshholded, and the integration area contains no actual raw intensities, or if one sample is miscalibrated, such the raw data points are (just) outside the integration area.
    | Importantly, if retention time correction data is available, the alignment information is used to more precisely integrate the propper region of the raw data. If the corrected retention time is beyond the end of the raw data, the value will be not-a-number (NaN).

**MSW**

    | "MSW" is used for peaklists without retention-time information like those from direct-infusion spectra.

------------
Output files
------------

xset.fillPeaks.RData : rdata.xcms.fillpeaks format

    | Rdata file that will be used in the **xcms.diffreport** or **xcms.annotateDiffreport** step of the workflow.
    
------

.. class:: infomark 

The output file is an group.RData file. You can continue your analysis using it in **xcms.diffreport** or **xcms.annotateDiffreport** tool.

    
---------------------------------------------------

---------------
Working example
---------------

Input files
-----------

    | RData file -> **xset.retcor.RData**

Parameters
----------

    | method -> **chrom**
    

Output files
------------

    | **xset.fillPeaks.RData: RData file**




    </help>

    <citations>
        <citation type="doi">10.1021/ac051437y</citation>
        <citation type="doi">10.1093/bioinformatics/btu813</citation>
    </citations>


</tool>