Get Rscript to print line numbers when errors occur

example.md

Get Rscript to print line numbers when errors occur

Put this at the top of your executable Rscript file:

options(error = quote({
  dump.frames(to.file=T, dumpto='last.dump')
  load('last.dump.rda')
  print(last.dump)
  q()
}))

Example:

./somescript

Error: I fail!
$`stop("I fail!")`
<environment: 0x100ca5790>

attr(,"error.message")
[1] "Error: I fail!\n"
attr(,"class")
[1] "dump.frames"

Just kidding! You still can't get line numbers for errors in Rscripts but this is slightly more helpful.

Solution modified from StackOverflow question: R script line numbers at error?.

somescript

#!/usr/bin/env Rscript

options(error = quote({
  dump.frames(to.file=T, dumpto='last.dump')
  load('last.dump.rda')
  print(last.dump)
  q()
}))

stop('I fail!')

R is just so painful..

This is helpful! But yes second @moritzschaefer. Can't believe it has to be this hard to get a stack trace