--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/split_file_on_column.xml	Tue Dec 17 15:24:50 2013 -0500
@@ -0,0 +1,55 @@
+<tool id="tp_split_on_column" name="Split file" force_history_refresh="True" version="0.1.1">
+    <description>according to the values of a column</description>
+    <requirements>
+        <requirement type="package" version="4.1.0">gnu_awk</requirement>
+    </requirements>
+    <command>
+        awk '{print > "primary_${outfile.id}_" \$$column "_visible_${infile.ext}" }' $infile;
+        echo 'Created' `ls -l | wc -l` 'files:' > $outfile;
+        ls -1 --hide="*_stdout" --hide="*_stderr" >> $outfile;
+    </command>
+
+    <inputs>
+        <param format="txt" name="infile" type="data" label="File to select" />
+        <param name="column" label="on column" type="data_column" data_ref="infile" accept_default="true" />
+    </inputs>
+
+    <outputs>
+        <data format="input" name="outfile" metadata_source="infile" label="${tool.name} on ${on_string}"/>
+    </outputs>
+    <tests>
+        <test>
+        </test>
+    </tests>
+    <help>
+
+**What it does**
+
+This tool splits a file into different smaller files using a specific column. 
+It will work like the group tool, but every group is saved to its own file.
+
+-----
+
+**Example**
+
+Splitting on column 4 from this::
+
+    chr7  56632  56652  cluster 1
+    chr7  56736  56756  cluster 1
+    chr7  56761  56781  cluster 2
+    chr7  56772  56792  cluster 2
+    chr7  56775  56795  cluster 2
+
+will produce 2 files with different clusters::
+
+    chr7  56632  56652  cluster 1
+    chr7  56736  56756  cluster 1
+
+
+    chr7  56761  56781  cluster 2
+    chr7  56772  56792  cluster 2
+    chr7  56775  56795  cluster 2
+
+
+    </help>
+</tool>