I am using Donlp2 package to solve a non-linear problem, but there's an error I always meet:
Error in matrix(unlist(value, recursive = FALSE, use.names = FALSE), nrow = nr, : attempt to set an attribute on NULL I have been suffering from this bug for a long time. I'll be very grateful if somebody could help me -_- -- View this message in context: http://r.789695.n4.nabble.com/Error-in-matrix-unlist-value-recursive-FALSE-use-names-FALSE-nrow-nr-attempt-to-set-an-attribute-on-L-tp4645633.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.
