Hi, After I read an xlsx file into the work space: A <- read.xlsx("B.xls", header = T, check.names = F) There are several headers with the names like: colnames(A) [1:4] # [1] "A 1" "B" [3] "C 2" "D" I can get the content of column 2 and column 4 easily by A$B or A$D
However, I can not type something like A$A 1 (cause there is a space in between) Obviously, you can get around this by using something like A[,colnames(A) == "A 1"] The other way to get around is to read it by using check.names = T A <- read.xlsx("B.xls", header = T, check.names = T) and type something like A$A.1 But I am wondering if I stick using check.names = F, if there is anything that is as easy as A$A 1 that works. Thanks, -Jack [[alternative HTML version deleted]] ______________________________________________ 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.