--- a/multivariate_config.xml	Sat Oct 22 03:02:47 2016 -0400
+++ b/multivariate_config.xml	Wed Feb 28 09:59:25 2018 -0500
@@ -1,10 +1,9 @@
-<tool id="Multivariate" name="Multivariate" version="2.3.8">
+<tool id="Multivariate" name="Multivariate" version="2.3.10">
   <description>PCA, PLS and OPLS</description>
   
   <requirements>
-    <requirement type="package" version="3.3.1">R</requirement>
-    <requirement type="package">r-batch</requirement>
-    <requirement type="package">bioconductor-ropls</requirement>
+    <requirement type="package" version="1.1_4">r-batch</requirement>
+    <requirement type="package" version="1.10.0">bioconductor-ropls</requirement>
   </requirements>
   
   <stdio>
@@ -45,6 +44,10 @@
   variableMetadata_out "$variableMetadata_out"
   figure "$figure"
   information "$information"
+
+  #if $save_rdata:
+    ropls_out "$ropls_out"
+  #end if
   ]]></command>
   
   <inputs>
@@ -181,14 +184,19 @@
 	
       </when>
     </conditional>
-    
+    <param name="save_rdata" type="boolean" truevalue="yes" falsevalue="no" checked="false" label="Save RData in your history"
+           help="Save the R ropls::opls object in your history for ad hoc analysis and graphing (outside Galaxy, this requires package 'bioconductor-ropls')"/>
   </inputs>
   
   <outputs>
     <data name="sampleMetadata_out" label="${tool.name}_${sampleMetadata_in.name}" format="tabular" ></data>
     <data name="variableMetadata_out" label="${tool.name}_${variableMetadata_in.name}" format="tabular" ></data>
-    <data name="figure" label="${tool.name}__figure.pdf" format="pdf"/>
-    <data name="information" label="${tool.name}__information.txt" format="txt"/>
+    <data name="figure" label="${tool.name}_figure.pdf" format="pdf"/>
+    <data name="information" label="${tool.name}_information.txt" format="txt"/>
+    <!-- how would an ropls.rdata datatype be added if that were the desired choice here instead?  Specifically, could it be created as part of tool installation? -->
+    <data name="ropls_out" label="${tool.name}_${dataMatrix_in.name}.RData" format="rdata">
+      <filter>save_rdata</filter>
+    </data>
   </outputs>
   
   <tests>