R help - Mar 2000 - Error handling

Dear R-Help,


I am trying to run the following:

apply(Data,1, fit-non-linear-curve)

where fit-non-linear-curve() is a bootstrapping procedure that uses the
nls() function. 

Unsuprisingly there are some lines in the Data for which the nls()
procedure fails, probably due to bad starting values.  How do I make R just
give up on that particular line of Data and carry on? I am using R 0.99 on
windows NT.

I would like to echo the praises of the R-development team.

Simon Bond



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"Simon  Bond" <bond at graylab.ac.uk> writes:
> Unsuprisingly there are some lines in the Data for which the nls()
> procedure fails, probably due to bad starting values.  How do I make R just
> give up on that particular line of Data and carry on? I am using R 0.99 on
> windows NT.
Have a look at the try() function in 1.0.0. Or look at restart() which
I think is already in 0.99.0.

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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