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rtxray
2006 Mar 01
3
How to do a "proc summary" in R?
Hi,
I'm a SAS user trying to convert myself to R but I still have problems with some pretty simple commands.
First I wanted to add up a number of red-tailed hawks seen per day (julian day) per year. So I tried:
RTyrday <- tapply(RThr,list(year,julian),sum)
And then I tried the following regression:
mod1 <- glm(RTyrday~julian+year, family=gaussian (link=identity),data=RT)
Wich didn't work since my vector RTyrday and julian don't have the same length. My question is: How can I create a new data s...