Hi All recently i faced an unknown problem while reading the data. Can someone help me in understanding why this happened.
I have .txt file containing X, Y, Z variables. I used the command > a <- read.table("filename", header=TRUE) after reading the file i am able to view it by tryping a. but i am unable to access the variables in a, by giving the command a$X. > a$X > NULL this is the output it was showing. However the same i am able to access by giving a[[1]]. i tried changing the mode by issuing command a <- as.data.frame(a). But situation remains the same. look forward for experts suggestion on this. rgds snvk ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html