[R] gnls from library nlme

Peter Schlattmann peter.schlattmann at medizin.fu-berlin.de
Fri Oct 4 16:06:24 CEST 2002

Dear all,

I am trying to gain some experience with the function gnls from the nlme
I tried to model the Theophyline data by trying to model the presumed
dependency of
the clearance on the body weight.

This is my  function call of gnls:


That's been the result:

Error in as.vector(x, mode) : cannot coerce to vector

I tried various other calls with no success. Does anyone have a hint for

Thanks a lot

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