"array chip":
>Hi, I had a weird results from using apply().
Consider:
y<-data.frame(list(a=c(1,NA), b=c('2k','0')))
do.call(args=y,
Vectorize(v=c("a","b"),
function(a,b) if(is.na(z<-b=="2k" & a==1)) 0
else z+0))
Heikki Kaskelma
Munkkiniemi
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