[R] warning.expression?

[Henrik Bengtsson]

Roger D. Peng wrote:
> You might be interested in 'tryCatch' to catch warnings.

A warning here: tryCatch(expr, warning=...) will catch warnings and 
interrupt 'expr' (as if an error occured), whereas 
withCallingHandlers(expr, warning=...) does not do this.

/Henrik

> -roger
> 
> Thomas Friedrichsmeier wrote:
> 
>>Hi!
>>
>>I'm trying to catch all warning-messages for special handling. It seems 
>>options (warning.expression=myfunc ()) can be used for that. However, the 
>>question is: How can I get at the actual warning in myfunc ()? Apparently in 
>>S, you can use .C("get_last_message") for that. Is there a similar mechanism 
>>in R?
>>
>>Thanks for your help!
>>Thomas
>>
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> 
>