--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vegan_macros.xml	Wed Dec 23 13:55:10 2015 -0500
@@ -0,0 +1,49 @@
+<macros>
+    <xml name="requirements">
+        <requirements>
+            <requirement type="package" version="3.2.1">R</requirement>
+            <requirement type="package" version="2.3-0">vegan</requirement>
+            <yield />
+        </requirements>
+    </xml>
+
+    <xml name="version_command">
+        <version_command><![CDATA[Rscript -e 'library(vegan)' 2>&1 > /dev/null | grep 'This is vegan']]></version_command>
+    </xml>
+
+    <xml name="stdio">
+        <stdio>
+            <exit_code range="1:" />
+            <exit_code range=":-1" />
+        </stdio>
+    </xml>
+
+    <xml name="params_load_tabular_file">
+        <param name="input_abundance" type="data" format="tabular" label="File with abundance values for community" help="Rows are samples; columns are species/phyla/community classifier"/>
+        <param name="species_column" label="Group name column" type="data_column" data_ref="input_abundance" value="6" help="Species, phylum, etc"/>
+        <param name="sample_columns" label="Sample count columns" type="data_column" multiple="True" value="2" data_ref="input_abundance" help="Select each column that contains counts"/>
+        <param name="header" type="boolean" truevalue="TRUE" falsevalue="FALSE" checked="False" label="Input has a header line"/>
+    </xml>
+
+    <token name="@RSCRIPT_LOAD_TABULAR_FILE@"><![CDATA[
+#set $int_species_column = int( str( $species_column ) )
+#set $fixed_sample_columns = []
+#for $sample_col in map( int, str( $sample_columns ).split( "," ) ):
+#assert $sample_col != $int_species_column, "Sample label column and sample count columns must not be the same."
+#silent $fixed_sample_columns.append( str( $sample_col if $sample_col < $int_species_column else $sample_col-1 ) )
+#end for
+input_abundance <- read.delim("${input_abundance}", header=${header}, sep="\t", row.names=${ species_column })
+input_abundance <- t( input_abundance[ c( ${ ",".join( $fixed_sample_columns ) } )] )
+
+]]>
+    </token>
+
+    <token name="@RSCRIPT_PREAMBLE@"><![CDATA[
+options(bitmapType='cairo')## No X11, so we'll use cairo
+library(vegan)
+]]>
+    </token>
+
+    <token name="@VERSION@">2.3-0</token>
+
+</macros>