Hi,
I want to automatically fit variograms to a large number of different sample data sets, and call the funtion "likfit" (in package geoR) from within a for-loop. "likfit" does again call "optim". After ssuccessfully fitting variograms to some of the data sets, the procedure crashes and I get the error message:
Error in optim(par = ini, fn = negloglik.GRF, method = "L-BFGS-B", lower = lower.optim, :
non-finite value supplied by optim
When I restart the procedure with the data set that first caused the error, it is usually possible to fit the variogram successfully for this data set, but the procedure will crash when fitting to another data set instead. I do therefore assume that the problem is not related to my data sets.
I think my problem is the same as one reported earlier, and it seems like there is a way around it:
Dr. Hans A. Kestler: [Rd] optim-Bug (PR#6720)
http://r-bugs.biostat.ku.dk/cgi-bin/R/Analyses-fixed?id=6720
Unfortunately, as I have just started using R, and am not very familiar with all of the syntax, I did not understand from these postings how to solve the problem. Will I need a fix from somewhere, or should I just do some changes in the source code on my computer? And what should I eventually change in the source code?
Thanks in advance, Jon
______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
