Good morning R-help,
I have an idiot question: I would like to use getSrcDirectory()
and friends to allow me to identify where an R file has been
called from when invoked using Rscript. If I understand the
documentation correctly, the following example should work:
In file test.R:
options(keep.source=T)
fn<-function(x){x<-x+1}
srcDir<-getSrcDirectory(fn)
print(srcDir)
I attempted the following invocations of Rscript:
+ Rscript test.R
+ Rscript <full_path>/test.R
I attempted the following invocations using R:
+ source("test.R")
+ Manually entering the function
In both attempts, the variable srcDir is a zero-length character
vector. Digging into the documentation, I notice that getSrcDirectory()
looks for a "srcref" attribute in the function body. In neither R
nor Rscript is this attribute set when declaring the function.
So: what am I missing?
Comments:
+ I have 'keep.source' option set to TRUE in both R and Rscript
(irritatingly, it's default is TRUE in R and FALSE in Rscript
- why is this?)
+ I have tested this with:
o R 2.13.1 on Ubuntu 10.10 (server)
o R 2.13.0 on Windows 7
Best wishes,
Cormac.
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