[kepler-dev] [Bug 3230] New: - Matrix Viewer actor does not accept RExpression matrices

[bugzilla-daemon at ecoinformatics.org]

http://bugzilla.ecoinformatics.org/show_bug.cgi?id=3230

           Summary: Matrix Viewer actor does not accept RExpression matrices
           Product: Kepler
           Version: 1.0.0beta3
          Platform: Other
        OS/Version: All
            Status: NEW
          Keywords: evaluate, kruger
          Severity: normal
          Priority: P2
         Component: actors
        AssignedTo: berkley at nceas.ucsb.edu
        ReportedBy: drury at nceas.ucsb.edu
         QAContact: kepler-dev at ecoinformatics.org


2-way tables are a common way to view relationships between bivariate data. 
The The RExpression actor is quite good at generating these and the Matrix
Viewer actor seems like a logical vehicle for displaying them.  The Viewer does
not display the matrix, however, probably because, as the documentation says,
it "...accepts matrix tokens (e.g., [1, 2; 3, 4]...", which is not the way
matrices are represented in R (though they can be in Matlab). I am way out of
my depth in discussions of the way such data is stored in, and output from, the
RExpression actor (or in R for that matter).  But, maybe I can say that if you
want folks to be able to generate high-quality output in workflows, adequate
presentation of a 2-way table would be a pretty basic expectation.

Thank you!