search for: logitlower

Displaying 1 result from an estimated 1 matches for "logitlower".

2010 Sep 11
3
confidence bands for a quasipoisson glm
...ot;Number of used plant", las=1) ilogit<-function(x) exp(x)/(1 + exp(x)) logit <-function(x) log(x/(1 - x)) newdat$logitpred <- predict(gm6, newdata=newdat, type="link") newdat$sepred <- predict(gm6, newdata=newdat, type="link", se.fit=TRUE)$se.fit newdat$logitlower <- newdat$logitpred-1.96 * newdat$sepred newdat$logitupper <- newdat$logitpred+1.96 * newdat$sepred newdat$upper <- ilogit(newdat$logitupper) newdat$lower <- ilogit(newdat$logitlower) lines(x, newdat$lower, lty=3) lines(x, new...