Please I need your help!
This code sometimes predicts negative values because it is based on the inverse
link. What is the modification to calculate de parameters using the loglink
option?
z.out = zelig(PT ~ Q + S + T + TDG, model = "gamma", data = PT)
summary(z.out)
x.out = setx(z.out)
s.out = sim(z.out, x = x.out)
plot(s.out)
Thanks a lot for your advice
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