I have a data frame called z that includes four columns: Col1 Col2 Col3 Col4 Text1 Text2 X0.1 5 Text1 Text2 X0.2 10 Text1 Text2 X0.3 15 Text1 Text3 X0.1 5 Text1 Text3 X0.2 10 Text1 Text3 X0.3 15
I am trying to convert the 3rd column to the numeric value excluding the X so that I can produce a lattice plot. I have tried a number of approaches including z$Col3[z$Col3=="X0.1"]="0.1" as a first step but get an error: invalid factor level NAs generated. Sent from my BlackBerry® wireless device ______________________________________________ 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.
