Message-ID: <50d1c22d0704231623r5a79dc87lc7b91bb98ed4bb70@mail.gmail.com>
Date: 2007-04-23T23:23:11Z
From: ivo welch
Subject: Error Reporting
Dear R developers: May I suggest that future versions of R improve a
little on the error reporting? For example, right now, I am trying to
figure out which of my column names in a select statement has been
mis-spelled:
Error in `[.data.frame`(x, r, vars, drop = drop) :
undefined columns selected
It would be nice if it could say what the name of the undefined column is.
Of course, I have already begged a couple of times that errors like
this be preceded by a backtrace or the last line number from the
user's R program.
joke.R:22: Error in `[.data.frame`(x, r, vars, drop = drop) :
undefined columns selected: "non.existing.name" in "data.frame.name"
I don't understand why this is difficult (simply storing the currently
executing line and/or linenumber) as the program executes---but then,
I am a lousy freerider who does not look at the code. (All I do is
occasionally donate to the R org.)
of course, I appreciate the great language you have put together.
just begging to make it a little better. (yes, I do not want to use
ESS.)
regards,
/ivo