Re: [R] catch error/warning message in a loop

[Spencer Graves]

	  With situations like this, I often include something like "cat(i, 
'')" in the loop (where "i" is the index of the loop).

	  If I'm writing a function to be used by others, I might use "try", as 
described, e.g. in Venables and Ripley (2000) S Programming (p. 48).

hth.  spencer graves

array chip wrote:
Hi, I am running cox regreesion (coxph) on a large
number of independent variables, one variable at a
time, using loop. At some point of the loop, the cox
regression stopped due to some errors. How can I know
at which variable the cox regression stopped so that I
can pinpoint the variable that causes the problem? I
guess this is not unique to cox regression, it is the
problem of catching the error/warning message promptly
in a loop.
tahnks

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