Here is a small reproducible example: data <- structure(list(V1 = structure(1:3, .Label = c("Name1", "Name2", "Name3"), class = "factor"), V2 = structure(c(1L, 3L, 2L), .Label = c("nam1", "name-1", "name_12"), class = "factor"), V3 = structure(1:3, .Label = c("nam2", "nam_34", "name-2"), class = "factor"), V4 = structure(c(2L, 3L, 1L), .Label = c("", "nam3", "nam_56"), class = "factor"), V5 = structure(c(1L, 2L, 1L), .Label = c("", "name_78"), class = "factor")), .Names = c("V1", "V2", "V3", "V4", "V5"), class = "data.frame", row.names = c(NA, -3L))
library(reshape2) data_long <- melt(data,id.vars="V1") Warning message: attributes are not identical across measure variables; they will be dropped Can someone please tell me how to correct this? Best Regards, Ashim [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.