Please I am new to R. I got the following code from a friend:
gmat <- cbind(gmat,p*(1-p)*wxb)
for (j in seq(1:ncol(gmat))) {
gmat[,j] <- fitted(lm(gmat[,j]~zmat))
}
It is for spatial logit.
After defining all the matrices in it such as P, wxb, gmat, and zmat,
I tried to run it in R and got the following error message:
Error in model.frame.default(formula = gmat[, j] ~ zmat, drop.unused.levels =
TRUE) :
invalid type (list) for variable 'zmat'
Any help will be appreciated
Thanks
Abdul
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