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...= c("contr.treatment", "contr.poly")) (fm3Soy.nlme <-  update(fm2Soy.nlme,         fixed = Asym + xmid + scal ~ Year,         start = c(soyFix[1], 0, 0, soyFix[2], 0, 0, soyFix[3], 0, 0))) # here I wouldn't like give the intercept parametrization but # the parameters by tratament with standard error. See: # before: # Fixed effects: list(Asym ~ Year * Variety, xmid ~ Year + Variety, scal - 1 ~      Year) #                           Value Std.Error  DF  t-value p-value # Asym.(Intercept)       19.43400 0.9537402 352 20.37661  0.0000 # Asym.Year1989          -8.84208 1.07211...

...ake an weibull survival analysis using the survival package. It,s OK, them I have the functions. I plot this funcions with curve(). I want to make a plot with the real survival points (proportion of alive x time) and them add the curves to points. I have the time to dead, the censor data and my trataments. To analysis the model is: model1 <- survreg(Surv(time,censor)~trat) Exist any function in R to plot the real point (proportion of alive in time)? Thanks Ronaldo -- That's odd. That's very odd. Wouldn't you say that's very odd? -- | //|\\ [*****************************][...