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RegisterConfused V/Z matratzen and tips [RSABE / ABEL]
Dear confused sailor,
willingly I do you the favor:
CSH fit:
UN fit:
Same block for other subjects.
Unfortunately I have not found an option to give you directly the Z matrix to temper your confusion.
My suggestion: Go to sea and let the storm blow your brain clear
.
For 1 subject I suppose (if the four values are sorted by tmt and replicate number):
According to your clear and concise memo of the rules of matrix multiplication this gives a 4x4 matrix for Z*G*Zt. Hope this helps.
Another tip: Have a look into
Helen Brown, Robin Prescott
"Applied Mixed Models in Medicine"
Second edition, John Wiley & Sons 2006
ISBN: 0-470-02356-2
There are a lot of matrix specifications in it.
willingly I do you the favor:
CSH fit:
Estimated V Matrix for subject 1
Row Col1 Col2 Col3 Col4
1 0.02540 0.005652 0.005251 0.005251
2 0.005652 0.02540 0.005251 0.005251
3 0.005251 0.005251 0.02498 0.004878
4 0.005251 0.005251 0.004878 0.02498
UN fit:
Estimated V Matrix for subject 1
Row Col1 Col2 Col3 Col4
1 0.02732 0.01202 0.01202
2 0.02732 0.01202 0.01202
3 0.01202 0.01202 0.02476
4 0.01202 0.01202 0.02476Same block for other subjects.
Unfortunately I have not found an option to give you directly the Z matrix to temper your confusion.
My suggestion: Go to sea and let the storm blow your brain clear
.For 1 subject I suppose (if the four values are sorted by tmt and replicate number):
random tmt
Tmt R T
R1 1 0
R2 1 0
T1 0 1
T2 0 1According to your clear and concise memo of the rules of matrix multiplication this gives a 4x4 matrix for Z*G*Zt. Hope this helps.
Another tip: Have a look into
Helen Brown, Robin Prescott
"Applied Mixed Models in Medicine"
Second edition, John Wiley & Sons 2006
ISBN: 0-470-02356-2
There are a lot of matrix specifications in it.
—
Regards,
Detlew
Regards,
Detlew
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Ing. Helmut Schütz