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 [[alternative HTML version deleted]]
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