[R] Automatic re-looping after error

[Spencer Graves]

Have you considered "try"? 

hope this helps.  spencer graves

(Ted Harding) wrote:

>Hi Folks,
>I'm seeking advice about how to resume an outer loop following
>failure of a function within the loop (which issues an error
>message).
>
>Essentially, I'm repeating (simulating) a process which involves
>random sampling, EM and MCMC. I'm walking on very edge of rather
>thin ice -- data rather thinly spread over many parameters!
>
>Occasionally some component of the loop fails, with an error message.
>At this point, R quits the run altogether and returns to the command
>prompt. I then have to restart the whole script.
>
>All that's really needed to cope with the situation is for R to
>drop that cycle of the loop, and resume with a new cycle.
>
>However, I'm wondering how to set this up. I've had a look at
>try(), and I'm not at all sure that it does what I would want.
>What I'd really like is something (inside the loop) on the lines of
>
>   on.error(maybe some parameters X) break
>
>where X might specify what sort of error or what function it comes
>from. Would setting
>
>  options(error = break )
>
>do it?
>
>Any other suggestions?
>
>With thanks,
>Ted.
>
>
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>E-Mail: (Ted Harding) <Ted.Harding at nessie.mcc.ac.uk>
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>Date: 09-Oct-03                                       Time: 18:03:37
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