[kepler-dev] [Bug 2958] New: - RExpression actor problem with large string arrays

[bugzilla-daemon at ecoinformatics.org]

http://bugzilla.ecoinformatics.org/show_bug.cgi?id=2958

           Summary: RExpression actor problem with large string arrays
           Product: Kepler
           Version: 1.0.0beta3
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: actors
        AssignedTo: higgins at nceas.ucsb.edu
        ReportedBy: higgins at nceas.ucsb.edu
         QAContact: kepler-dev at ecoinformatics.org


Currently the RExpression actor handles very large arrays of input by means of
an intermediate file that is read using the R 'scan' function. (Strings are
used as input for smaller arrays, but the input system of R can only handle a
limited size). Kevin Drury reported a problem, however, with a large string
array.

The problem is the the 'scan' function defaults to numeric values. The
RExpression actor code needs to be fixed to handle large string arrays that a
placed in an intermediate file. (It seems to work OK for large numeric strings,
and for small string arrays not written to a file.)