Displaying 1 result from an estimated 1 matches for "y_cat".
Did you mean:
3_cat
2008 Apr 14
5
Equivalent to a BY command in SAS
...ing in R that functions like a BY command in SAS?
For example, let's say you have a variable x, and you want to see the mean.
Easy...
> mean(x)
But what if you want to see the mean of x conditional on another discrete
variable? My best attempts so far are something like...
> mean(x, y_cat=1)
...which of course doesn't work. I have downloaded plenty of R user guides
that are very informative, but am not seeing much on detailed descriptives
or data manipulation (for my life, I can't figure out how to sort an
attached data frame, but that's another issue). Thanks.
--
Vi...