search for: spl3

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2007 Sep 27
1
error message in eval
...t model with R. My code is: > library(boolean) > library(foreign) > pr <- read.dta ("prcore1.dta") > bp <- boolprep ("(a&b)|c", "cwt", a="O1", b="t", c="DM2 > + ah + md + con + n3 + rel + slo + pyrs > + sp1 + sp2 + spl3") > answer <- boolean (bp, link = "logit", method = "nlm") But I got an error message here as follows: Error in eval(expr, envir, enclos) : object "cwt" not found "cwt" is my D.V. and I made sure that R read the data correctly. It might be a st...