[R] question on using "warning.expression"

JJ josh8912 at yahoo.com
Tue Dec 21 01:31:55 CET 2004

I would like to flag certain warnings to make them
into errors.  I thought I could do this by giving
warning.expression a function to evaluate, in which I
could check the warning message and call stop if I

I tried this:


but it does not appear to actually call myfunction. 
The function myfunction instructs that if the warning
has a certain messsage, then stop() is called.  

Can anyone help with the proper syntax for
warning.expression?  Or is there a better way to do
what I want?


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