[R] adding column to data frame conditionally
Krische at hsu-hh.de
Thu May 27 11:33:09 CEST 2010
Dear all and thanks in advance for helping me with a rather stupid question:
I imported a data set ("freqg") into R consisting of 14 variables. Now
a want to compute a variable and add it in an additional column to my
data frame. The value of this new variable ("condition") depends on
the values of two other variables ("mat" and "flank") already included
in the data frame.
if mat=1 and flank=1 -> condition=1
if mat=2 and flank=1 -> condition=2
What I got is this code, which doesn't really work (it results in a
new column called "condition" which takes only the value "TRUE"):
Thanks in advance and kind regards!
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