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q9300
2003 May 22
1
[R ] Query : problems with the arithmetic operator "^" with function "lme"
...ialyzer,~pressure+pressure^2,weights=varPower(form=~pressure))
We Obtain
> fm2Dial.lme
Linear mixed-effects model fit by REML
Data: Dialyzer
Log-restricted-likelihood: -488.4535
Fixed: rate ~ (pressure + pressure^2 + pressure^3 + pressure^4) * QB
(Intercept) pressure QB300 pressure:QB300
39.362769 1.480331 -4.547449 7.515690
Random effects:
Formula: ~pressure + pressure^2 | Subject
Structure: General positive-definite, Log-Cholesky parametrization
StdDev Corr
(Intercept) 0.01102331 (Intr)
pressure 1.26972080 -0.823
Resi...