kate <yhsu6 <at> uiuc.edu> writes:
[snip] > > When I read this txt file into R and attach this data, I found the output of y is as the follows > [1] 8 5 3 + -1 + > Levels: -1 + 3 5 8 > > Could I get rid of Levels in the output? Because I need to use the observed y and x run regression first and then > assign the value to the missing y later. > You probably want to use the argument na.strings="+" in your input command (scan or read.table) -- R is interpreting the existence of a non-numeric value in your input as evidence that you want that variable to be a factor (a categorical, non-numeric variable). Ben Bolker ______________________________________________ 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.
