Displaying 2 results from an estimated 2 matches for "nondiagonal".
2010 Jul 12
1
What is the degrees of freedom in an nlme model
Dear all,
I want to do a F test, which involves calculation of the degrees of
freedom for the residuals. Now say, I have a nlme object "mod.nlme". I
have two questions
1.How do I extract the degrees of freedom?
2.How is this degrees of freedom calculated in an nlme model?
Thanks.
Jun Shen
Some sample code and data
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2011 Jun 02
4
generating random covariance matrices (with a uniform distribution of correlations)
List members,
Via searches I've seen similar discussion of this topic but have not seen
resolution of the particular issue I am experiencing. If my search on this
topic failed, I apologize for the redundancy. I am attempting to generate
random covariance matrices but would like the corresponding correlations to
be uniformly distributed between -1 and 1.
The approach I have been using is: