Christfried Kunath wrote on 4/8/2005 10:39 AM:
Hello,
how can I use the function "cor()" with x and y in function
"aggregate()" or "by()"?
The data are like this:
x y group
1 4 B
2 4 B
3 5 C
I would like obtain the correlation between x and y for each subset. I
don't want to use
Hello,
how can I use the function "cor()" with x and y in function
"aggregate()" or "by()"?
The data are like this:
x y group
1 4 B
2 4 B
3 5 C
I would like obtain the correlation between x and y for each subset. I
don't want to use the workaround with the function subset(), beca
