Hi, I am using R 1.9.1 on on i686 PC with SuSE Linux 9.0.
I have a data.frame, e.g.: > myData <- data.frame( var1 = c( 1:4 ), var2 = c (5:8 ) ) If I add a new column by > myData$var3 <- myData[ , "var1" ] + myData[ , "var2" ] everything is fine, but if I omit the commas: > myData$var4 <- myData[ "var1" ] + myData[ "var2" ] the name shown above the 4th column is not "var4": > myData var1 var2 var3 var1 1 1 5 6 6 2 2 6 8 8 3 3 7 10 10 4 4 8 12 12 but names() and colnames() return the expected name: > names( myData ) [1] "var1" "var2" "var3" "var4" > colnames( myData ) [1] "var1" "var2" "var3" "var4" And it is even worse: I am not able to change the name shown above the 4th column: > names( myData )[ 4 ] <- "var5" > myData var1 var2 var3 var1 1 1 5 6 6 2 2 6 8 8 3 3 7 10 10 4 4 8 12 12 I guess that this is a bug, isn't it? Arne ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html