<tool id="chromatra_l" name="Chromatra L" version="1.0.0">
  <description>for visualizing genome-wide chromatin modifications</description>
  <command interpreter="python">chromatral.py $gffinput $feainput $imgformat $stepwidth $upstreamstretch $maxx $tickspacing '$title' $output</command>
  <inputs>
    <param name="gffinput" format="gff" type="data" label="Normalized enrichment scores"/>
    <param name="feainput" format="tabular" type="data" label="Feature descriptions"/>
    <param name="imgformat" type="select" label="Image format">
        <option value="svg" selected="true">svg</option>
        <option value="png">png</option>
	<option value="pdf">pdf</option>
    </param>
    <param name="stepwidth" type="integer" value="150" min="1" label="Bin size in bp" />
    <param name="upstreamstretch" type="integer" value="450" min="0" label="Number of bp upstream of feature start to be plotted" />
    <param name="maxx" type="integer" value="5000" label="Max bp to be plotted  along x-coordinate. (Enter -1 for max feature length)"/>
    <param name="tickspacing" type="integer" value="1000" label="Tick spacing along x-coordinate" />
    <param name="title" type="text" value="" size="30" label="Plot title" />
  </inputs>
  <outputs>
    <data format="svg" name="output">
	<change_format>
		<when input="imgformat" value="png" format="png" />
		<when input="imgformat" value="pdf" format="pdf" />
		<when input="imgformat" value="svg" format="svg" />
	</change_format>
    </data>
  </outputs>

  <requirements>
    <requirement type="python-module">matplotlib</requirement>
  </requirements>

  <help>
CHROMATRA L visualizes the enrichment of chromatin modification across genomic features (e.g. all transcripts of a genome) in an unbiased way by accounting for feature length.

-----

.. class:: infomark

**Normalized enrichment scores**

Enrichment scores must be provided in *GGFv3* format.

.. class:: infomark

**Feature descriptions**

Features must be provided in a *TAB*-delimited format in this order:

-1. feature name

-2. chromosome number

-3. strand

-4. feature start

-5. feature end
  </help>

</tool>