On Nov 9, 2010, at 2:18 PM, nathan.kupp wrote:
R, by default, has some of the most cryptic error / debug messages
ever
invented. The error message encountered by the two posters:
Error in if (any(co)) { : missing value where TRUE/FALSE needed
In addition: Warning message:
In FUN(newX[, i], ...) : NAs introduced by coercion
results from the inclusion of a factor variable in the x data frame
passed
to the svm(x,y) call.
> ?svm
No documentation for 'svm' in specified packages and libraries:
you could try '??svm'
So svm is not part of R core.
The inference is that the authors of svm built a package that did not
provide informative error messages ... NOT that R is responsible.
I've mistakenly done this many times; the text of the
error message gives no indication that this is the source of the
problem.
Removing the factor(s) from x will eliminate the error.
Instead of sending this message to a group of people who have no
control over the process ... Why don't you take a more constructive
path and suggest to the authors of svm that they test for invalid data
being passed to the portion of the code that is throwing this error?
Perhaps you could offer code since it appears you have examined the
problem in more than
--
avid.
Nathan Kupp
Ph.D. Candidate
Department of Electrical Engineering
Yale University
--
______________________________________________
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.
