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Hi all - I'm stumped by the following mdl <- glm(resp ~ . , data = df, family=binomial, offset = ofst) WORKS yhat <- predict(mdl) WORKS yhat <- predict(mdl,newdata = df) FAILS Error in drop(X[, piv, drop = FALSE] %*% beta[piv]) : subscript out of bounds I've tried without offset, quoting binomial. The offset variable ofst IS in df. Previous postings indicate possible names(df) prob...

...=predict(reg1) ##prediction works fine yhat=predict(reg1,newdata=x2) ##gives error message because of "newdata" >Error in eval(predvars, data, env) : numeric 'envir' arg not of length one yhat=predict(reg1,data=x2) ##works fine ##using offset ofst=rep(0.5,100) reg1=glm(y1~x1,binomial,offset=ofst) yhat=predict(reg1) yhat1=predict(reg1,newdata=x2) ##gives error message yhat2=predict(reg1,data=x2) ##works fine % ========================================...