debugging littler/Rscripts

Question

How do I debug Rscripts that are run from the command line?

I am currently using the getopt package to pass command line options, nut when the

Answer 1

You could pass your command line arguments into an interactive shell with --args and then source('') the script.

$ R --args -v

R version 2.8.1 (2008-12-22)
Copyright (C) 2008 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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Type 'demo()' for some demos, 'help()' for on-line help, or
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> require(getopt)
Loading required package: getopt
> opt = getopt(c(
+ 'verbose', 'v', 2, "integer"
+ ));
> opt
$verbose
[1] 1
> source('my_script.R')

You could now use the old browser() function to debug.