[R] nlme varFixed

Franz Härtl |r@nz@h@ert| @end|ng |rom tum@de
Sat Mar 4 10:16:12 CET 2023

Dear R-project team,

I have a problem with the function varFixed() of the nlme-package.

I used it with the squid-data of Zuur et. al 2009 (chapter 4), to fix 
increasing residuals (heterogenetiy) (see graph in the email)

I get the message '

Variance function structure of class varFixed with no parameters, or 

Could you help me please?

Kind regards


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