[kepler-dev] [Bug 3909] New: - RExpression fails with certain port names

[bugzilla-daemon at ecoinformatics.org]

http://bugzilla.ecoinformatics.org/show_bug.cgi?id=3909

           Summary: RExpression fails with certain port names
           Product: Kepler
           Version: 1.0.0
          Platform: Other
        OS/Version: Windows XP
            Status: NEW
          Severity: normal
          Priority: P2
         Component: actors
        AssignedTo: berkley at nceas.ucsb.edu
        ReportedBy: soong at nceas.ucsb.edu
         QAContact: kepler-dev at kepler-project.org


XP Pro x64 SP2, Java 1.6.0_11, Kepler 1.0.0 from kepler-project.org

Port names that are not simple R names causes the RExpression actor to fail
with the error message that R cannot be found.  The error message is
misleading, and the variable names could still be used through the assign
function.  Escaping the name with backquotes will work in nearly all cases, but
I think the assign function is slightly more robust.