Hello,
I have a data.frame:
name col1 col2 col3 col4
AA 23 54 0.999 0.78
BB 123 5 1 0.99
AA 203 98 0.79 0.99
I want to get mean value data.frame in terms of name:
name col1 col2 col3 col4
AA 113.0000 76.0000 0.8945 0.8850
BB 123.00 5.00 1.00 0.99
I tried to use by function:
>aa<-by(test[,2:5], feature, mean)
I found aa is "by" function.
> class(aa)
[1] "by"
how can I transfer aa to a data frame?
thanks
YU
[[alternative HTML version deleted]]
______________________________________________
[email protected] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
