<tool id="ip_concat_channels" name="Concatenate images" version="0.1">
    <description></description>
    <requirements>
        <requirement type="package" version="0.14.2">scikit-image</requirement>
        <requirement type="package" version="1.15.4">numpy</requirement>
    </requirements>
    <command>
    <![CDATA[
        python '$__tool_directory__/concat_channels.py' 
        #for $input in $inputs
            '$input'
        #end for
        -o '$output' --axis '$axis'
    ]]>
    </command>
    <inputs>
        <param name="inputs" type="data" multiple="true" format="tiff,png,jpg,bmp" label="Binary Image Files" help="one or multiple binary image fiels"/>
        <param name="axis" type="select" label="Concatenation Axis">
            <option value="0">0</option>
            <option value="2">2</option>
        </param>
    </inputs>
    <outputs>
        <data format="tiff" name="output"/>
    </outputs>
    <tests>
        <test>
            <param name="inputs" value="sample1.png,sample2.png"/>
            <param name="axis" value="0"/>
            <output name="output" value="res.tiff" ftype="tiff" compare="sim_size"/>
        </test>
    </tests>
    <help>
    **What it does**

    This tool concatenates images.
    </help>
    <citations>
        <citation type="doi">10.1016/j.jbiotec.2017.07.019</citation>
    </citations>
</tool>