[R] Question about correct syntax to use with nlme / nlmer

Hi, I turn to the help list after spending hours on the package help, looking online, asking colleagues and trying various versions on R itself. The work I need help on involves a confidentiality contract, so I am limited in details on the specific model I used. However, my problem is really simp

[R] Overlaying several qqnorm curves in same frame

Hi all, I want to create a rather standard overlaid qqnorm plot on a single variable, with different subgroups of the same dataset plotted using different colors/symbols/etc. (I don't want side-by-side, rather different-colored curves on the same graph) I managed to do it rather tediously using "

[R] Confidence bands for model estimates using ns() spline basis

he ns() function, but this appears to interfere with the model's intercept estimate and generates errors. Any suggestions welcome... Thanks in advance, Assaf Oron [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://st