Peter Flom wrote:
Hello
Using R 2.7.0 on Windows.
I am running a linear discriminant analysis as follows
<<<<
discrim1 <- lda(normvar~ mafmahal+ mrfmahal+ mffmahal+ bafmahal+ brfmahal+
cofmahal+ bmfmahal+ cfmahal+ fractmahal+ antmahal+ absmifmahal+ absifmahal, subset = train)
prediction <- predict(discrim1, traintest1[-train,])$class
When I do this, I get a warning message:
<<<
Warning message:
'newdata' had 795 rows but variable(s) found have 796 rows
However, when I look at 'newdata' (i.e. traintest1) with dim, I find it has 796
rows:
<<<
dim(traintest1)
[1] 796 612
What happens when you do
dim(traintest1[-train,])
?
So, I do not understand the warning.
Thanks for any explanation or assistance
Peter L. Flom, PhD
Brainscope, Inc.
212 263 7863 (MTW)
212 845 4485 (Th)
917 488 7176 (F)
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