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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>
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