Hi, I have a data frame with several columns.
Now I want to transfer the data into a new variable (also a data frame), but I only want a part of the data, defined by a rule ...
for example; I have following data frame: row1 row2 row3 x 2 3 x 1 4 y 5 3 y 2 3 I know want a data frame, only with lines containing x in row1. I know how to do that for one row (f <- d$row2[d$row1=="x"]). But how can I do that for all rows in one step? So that I get this for f: row1 row2 row3 x 2 3 x 1 4 ______________________________________________ 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.
