Am 18.10.2008 um 23:03 schrieb Michael Just:
Hello,
I was wondering if there was a way to only select cases my from data
frame that contained a negative value?
c<-c(1,2,3,4,5,6,7,8,9,10)
d<- c(-1,2,-3,-4,5,6,-7,8,-9,10)
f <- cbind(c,d)
dat <-data.frame(f)
dat.lm <-lm(c~d)
If I wanted to only use the rows that had a negative value in column d
for my regression, how could I make that selection?
untested:
dat[dat$d < 0, ]
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