I am currently using LyX+Sweave a whole lot, huge fan of the concept! One of the
few weaknesses of this solution though is that the error message (when there is
something wrong with the R code) isn't much help:

"An error occurred whilst running R CMD Sweave 'myfile.Rnw'"

Is there a trick to look at the R trace to see what went wrong? Currently I
copy-paste my entire R code into an R console to reproduce the error, correct it
there, then correct my document, which is kind of a drag.


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