robbert blonk wrote:
Dear All,
Within a large script, I try to invoke a second program (called e.g. XXX)
from R using "shell" or "pipe".
e.g.:
readLines(pipe("XXX"))
or:
shell("XXX",intern=TRUE, wait = TRUE)
After running the program, the script reads a file with solutions produced
by the second program ("XXX.001").
readLines("XXX.001")
This works fine, when the second program finishes quickly. However, when it
takes some more time (like 2 minutes) R does not wait and starts looking for
XXX.001 which is not there (yet). Consequently,my beautiful script
crashes.....
Is there a way to let R wait until the second program really finishes?? the
argument "wait = TRUE" obviously doesn't work...
You need to give some details, like R version, platform, etc.
If you're on Windows, you might want to try a recent R-devel build:
I've recently made some improvements to the system/shell/pipe code.
Duncan Murdoch
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