Mercurial > repos > cpt > cpt_linear_genome_plot
annotate dna_features_viewer/compute_features_levels.py @ 6:e2449c8659be draft default tip
planemo upload commit fd578ee3fe8a0de6761ab6f59b2f0ca03117a75b
author | cpt |
---|---|
date | Sat, 13 Jul 2024 20:35:48 +0000 |
parents | e923c686ead9 |
children |
rev | line source |
---|---|
1
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
1 """Implements the method used for deciding which feature goes to which level |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
2 when plotting.""" |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
3 |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
4 import itertools |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
5 import math |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
6 |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
7 |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
8 class Graph: |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
9 """Minimal implementation of non-directional graphs. |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
10 |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
11 Parameters |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
12 ---------- |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
13 |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
14 nodes |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
15 A list of objects. They must be hashable |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
16 edges |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
17 A list of the form [(n1,n2), (n3,n4)...] where (n1, n2) represents |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
18 an edge between nodes n1 and n2 |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
19 """ |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
20 |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
21 def __init__(self, nodes, edges): |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
22 self.nodes = nodes |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
23 self.neighbors = {n: [] for n in nodes} |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
24 for n1, n2 in edges: |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
25 self.neighbors[n1].append(n2) |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
26 self.neighbors[n2].append(n1) |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
27 |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
28 |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
29 def compute_features_levels(features): |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
30 """Compute the vertical levels on which the features should be displayed |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
31 in order to avoid collisions. |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
32 |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
33 `features` must be a list of `dna_features_viewer.GraphicFeature`. |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
34 |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
35 The method used is basically a graph coloring: |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
36 - The nodes of the graph are features and they will be colored with a level |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
37 - Two nodes are neighbors if and only if their features's locations overlap |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
38 - Levels are attributed to nodes iteratively starting with the nodes |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
39 corresponding to the largest features. |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
40 - A node receives the lowest level (starting at 0) that is not already |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
41 the level of one of its neighbors. |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
42 """ |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
43 edges = [ |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
44 (f1, f2) |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
45 for f1, f2 in itertools.combinations(features, 2) |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
46 if f1.overlaps_with(f2) |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
47 ] |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
48 graph = Graph(features, edges) |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
49 levels = {n: n.data.get("fixed_level", None) for n in graph.nodes} |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
50 |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
51 def collision(node, level): |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
52 """Return whether the node placed at base_level collides with its |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
53 neighbors in the graph.""" |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
54 line_factor = 0.5 |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
55 nlines = node.data.get("nlines", 1) |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
56 for neighbor in graph.neighbors[node]: |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
57 neighbor_level = levels[neighbor] |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
58 if neighbor_level is None: |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
59 continue |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
60 neighbor_lines = neighbor.data.get("nlines", 1) |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
61 min_distance = line_factor * (nlines + neighbor_lines) |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
62 if abs(level - neighbor_level) < min_distance: |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
63 return True |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
64 return False |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
65 |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
66 for node in sorted(graph.nodes, key=lambda f: -f.length): |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
67 if levels[node] is None: |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
68 level = 0 |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
69 while collision(node, level): |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
70 level += 0.5 |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
71 levels[node] = level |
e923c686ead9
planemo upload commit 94b0cd1fff0826c6db3e7dc0c91c0c5a8be8bb0c
cpt
parents:
diff
changeset
|
72 return levels |