[R] lm(), na.exclude and predict()
mail at fwr.on.ca
Sat Aug 9 03:41:59 CEST 2003
I'm trying to get predict.lm() to return an NA for each NA row in it's input vector, so the output is the same length as the input.
I thought that using na.action=na.exclude with lm() would do that. But apparently not ??
df <- data.frame(x=c(NA,1,2,3,NA),y=c(0,2,3,4,0))
tl <- lm(y~x,df,na.action=na.exclude)
1 3 4 5
3.5 4.0 5.0 6.0
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