Oleg Sklyar wrote:
Hi Community,
I have a question about how to pass command line parameters to R script running in the batch mode. The problem is: there is a banch of data files which are to be processed by R script called from a web-server, i.e. in the batch mode. The web server generates data files and passes their names calling 'R CMD BATCH' one by one for every file. Now the question is how to call 'R CMD BATCH myScript.R' with parameters, like file name to process? I know how to read the parameters passed to an R script, but I don't know how to pass them.
There is an option --args that should cut the rest of the line off the command line. The problem is however that BATCH syntax is: 'R CMD BATCH [options] inFile [outFile]', i.e. if I write
'R CMD BATCH --args myDataFile myScript.R' or 'R CMD BATCH --args myDataFile < myScript.R' (similar was posted on some R help under Windows) it is not going to work because then BATCH doesn't know about myScript.R - it is considered as a parameter, so only 'R CMD BATCH' is executed. If however I use 'R CMD BATCH myScript --args myDataFile' then R understands --args as an output file and generates a file with that name.
Does anyone has a solution for the problem?
Best regards Oleg
See ?commandArgs
Uwe Ligges
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