Dear Vera, I had a similar problem once and as far as I can remember the reason were some negative inputs or outputs.
# Check for negative values x1a.neg <- apply(x1a, 1, function(x) any(x<0)) y1.neg <- apply(y1, 1, function(x) any(x<0)) exclude <- x1a.neg | y1.neg # Exclude negative rows x1a.neg <- x1a.neg[!exclude,] y1.neg <- y1.neg[!exclude,] # Try again! Daniel -- View this message in context: http://r.789695.n4.nabble.com/Problem-with-dea-boot-under-R-3-0-1-tp4669964p4673363.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
