[R] (no subject)

graham lawrence forporphyry at hotmail.com
Fri Jan 17 00:31:03 CET 2003

Dear R-help,

Why does the second grep reject when the first grep accepts?
Why does regexpr accept what grep rejects?

[1] "(1.2*A%*%B)/2"
Error in if (grep("A\\%\\*\\%A", eqtn) == 1) erind <- 1 :
        missing value where logical needed


graham lawrence

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