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2012 Jan 10
1
Converting BY to a data.frame
Hello,
I am trying to convert BY to a data frame, consider the following example:
exampleDF<-data.frame(a=c(1,2),b=c(10,20),name=c("first","second"))
exampleBY<-by(exampleDF,with(exampleDF,paste(a,b,sep="_")),
function(x) {
data.frame(
name=as.character(x$name),
a=x$a,
b=x$b,
c=x$a + x$b)
}
)
I made this functi...