--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/concat_channels.xml	Sat Feb 09 14:33:14 2019 -0500
@@ -0,0 +1,41 @@
+<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>