Displaying 2 results from an estimated 2 matches for "logdiv".
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logdir
2008 Jul 24
2
What is wrong with this contrast matrix?
...,2,2),
c(-2,1,0,1,0,0,0),
c(0,-1,0,1,0,0,0))
should consist of orthogonal elements (as can be shown using %*% on the individual columns).
However, when I use
linhyp=linear.hypothesis(model, "explanatory.variable", P=P)
I get an error saying
Error in linear.hypothesis.mlm(mult1, "logdiv", P = P) :
The error SSP matrix is apparently of deficient rank = 4 < 6
Which I interpret as there are too many non-zero rows in the matrix, P.
Is that correct? And how can I assess if the matrix is orthogonal (given that it is non-symmetrical,
hence det(P) and other matrix operations wo...
2007 Aug 11
0
DOE and interaction plot general question
...ackage) did not work out.
> >
> > Here are the model outputs and what I would like to have:
> >
> > anova(model1)
> > numDF denDF F-value p-value
> > (Intercept) 1 74 0.063446 0.8018
> > days 1 74 6.613997 0.0121
> > logdiv 1 74 1.587983 0.2116
> > leg 1 74 4.425843 0.0388
> >
> > anova(model2)
> > numDF denDF F-value p-value
> > (Intercept) 1 73 165.94569 <.0001
> > funcgr 1 73 7.91999 0.0063
> > grass...