On Thu, 2009-08-20 at 12:54 +0000, Inchallah Yarab wrote: > > Error in Math.factor(c(2L, 1L, 1L, 1L, 1L, 3L, 1L, 1L, 1L, 1L, 1L, 1L, : > log not meaningful for factors > In addition:Warning messages: > > 1: In Ops.factor(LRUpBound, LRLowBound) : * not meaningful for factors > 2: In Ops.factor(TransitCoefStdDev, TransitCoefMean) : > / not meaningful for factors
Your data are stored in a factor and you can't use the log() function on a factor. I've mentioned this several times to you; just because you think your data are numeric etc doesn't mean the R sees them that way. Always do str(DAT) [where DAT is your data object] after reading your data in to R and check that the stated formats are what you think. If you have numeric data but str() reports them to be factors, see the FAQ for how to correctly undo this conversion. One way is to: DAT$foo <- as.numeric(as.character(DAT$foo)) where foo is the factor you wish to convert to numeric. And please (!!!!) read *and* follow the posting guide before sending emails to this list. We need to know what you did to get the error (the error itself is not always clear without the context) so show us the commands. And to be even more helpful, show us an example with dummy or real data that you give to us so we can run it on our computers. There is no free lunch (well, not often) on R-Help. Help us to help you. HTH G > > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Dr. Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
