cheng wu wrote:
predict(a.lda,a[i,c(7:10)])$class -> q
Error in eval(expr, envir, enclos) : couldn't find function "SD"
I don't know what's wrong with this?
We don't know either, because there is almost no information in your message.
What is a.lda? What is a? What is i? In which way have you created these objects? What R version? What OS? ......????
Why do you send this message to R-devel rather than R-help?
Please specify repoducible code and read the posting guide at http://www.r-project.org/posting-guide.html.
Uwe Ligges
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