Hello, You need to tell read.table that the table has headers.
# needed 'header=TRUE' first <- read.table("RESIDSNEWr.csv", sep=";", quote="\"", header=TRUE)[c(1)] second <- read.table("RESIDSNEWr.csv", sep=";", quote="\"", header=TRUE)[c(2)] # see what they look like str(first) str(second) is.numeric(first) ## FALSE is.numeric(second) ## FALSE is.numeric(first$aaa) ## TRUE is.numeric(second$bbb) ## TRUE # general purpose sapply(first, is.numeric) sapply(second, is.numeric) And the rest works at the first try. > calibKendallsTau(cc,cor(first,second,method="kendall")) bbb aaa 4.420256 > > ## goodness-of-fit tests > gf.cc <- gofCopula(cc,u,method="itau") Progress will be displayed every 100 iterations. Iteration 100 [...etc...] Iteration 1000 > > gf.cc$pvalue [1] 0.0004995005 Hope this helps, Rui Barradas Ivette wrote > > http://r.789695.n4.nabble.com/file/n4630788/GOF_CGIK.R GOF_CGIK.R > http://r.789695.n4.nabble.com/file/n4630788/RESIDSNEWr.csv RESIDSNEWr.csv > > In order to save place, I attach the data and the R code, for which I have > 2 questions. > > 1/ I cannot convert successfully the data frames with names "first" and > "second" in numeric format. They participate here: > > calibKendallsTau(cc,cor(first,second,method="kendall")) and I get an error > message. > > 2/ I have cut the dates from my data file RESIDSNEWr.csv, but let's > suppose I want to keep them. How shall I update the code from 1/ in order > to have also the dates? > > Many thanks in advance to all, who will answer my message > -- View this message in context: http://r.789695.n4.nabble.com/problem-with-data-frame-to-numeric-transformation-tp4630788p4630803.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.