[QGIS-Developer] Processing R scripts - TypeError: cannot concatenate 'str' and 'NoneType' objects

[Anita Graser]

Maybe a fix ...

On Fri, Jun 2, 2017 at 8:31 PM, Anita Graser <anitagraser at gmx.at> wrote:

> File "C:/OSGEO4~1/apps/qgis-ltr/./python/plugins\processing\algs\r\RAlgorithm.py",
> line 404, in getExportCommands
>
> commands.append('cat("##' + out.name + '",file="' + outputDataFile +
> '",sep="\n",append=TRUE)')
>
> TypeError: cannot concatenate 'str' and 'NoneType' objects
>

​Not sure if it breaks anything else, but if I add

​            elif isinstance(out, OutputHTML):
                pass

before the offending

            elif out.name != RAlgorithm.R_OUTPUT_VALUES:
                commands.append('cat("##' + out.name + '",file="' +
outputDataFile + '",sep="\n",append=TRUE)')
                commands.append('cat(' + out.name + ',file="' +
outputDataFile + '",sep="\n",append=TRUE)')

Then the HTML output is created and visible in the results viewer and there
is no error.

I'm not sure what the problematic lines were supposed to do anyway ...

Best wishes,
Anita
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