[R] How to get the n (number of observations) per conditional group
rienk.doetjes at gmail.com
Thu Aug 13 16:11:03 CEST 2009
I have a huge data set that I'm cleaning up a bit. I am extracted the
means per condition, but also need to get the n. Strangely enough I am
unable to find a function that could actually pull this off. I am
unable to use replications or count the rows using nrow.
What I am trying to obtain is the number of observations fitting
something along the lines of "data$total[data$spp==1&data$gyro==1&data
Can anyone help me?
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