root/galaxy-central/tools/stats/correlation.xml

<tool id="Pearson_and_apos_Correlation1" name="Pearson and apos Correlation">
  <description>between any two numeric columns</description>
  <command interpreter="perl">correlation.pl $input $out_file1 $col1 $col2</command>
  <inputs>
<!--    <display>on column $col1 and column $col2 of $input</display> -->
    <param name="col1" size="3" type="text" value="5" label="Correlate data in column"/>
    <param name="col2" size="3" type="text" value="6" label="with data in column"/>
    <param format="txt" name="input" type="data" label="in Query"/>
  </inputs>
  <outputs>
    <data format="txt" name="out_file1" />
  </outputs>
  <help>Computes Pearsons correlation coefficient between any two numerical columns. Column numbers start at 1.
</help>
</tool>