Timeline for Use of nlme for mixed models of repeated measures with two classifying factors and a covariate
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
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| S Sep 4, 2013 at 14:36 | history | suggested | Randel |
add one tag
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| Sep 4, 2013 at 14:26 | review | Suggested edits | |||
| S Sep 4, 2013 at 14:36 | |||||
| Nov 26, 2012 at 7:56 | comment | added | Blain Waan | Thank you! I'll look into the points from your kind suggestion. | |
| Nov 25, 2012 at 11:43 | comment | added | chl |
Usually, for the random effects parts, random=~1|id corresponds to a random intercept for each statistical unit id while random=~grp|id would yield random intercept and slopes (for id within each level of grp). For crossed random effects, things are a little bit more complicated and you'll need to use one of the pdBlocked together with pdIdent (block diagonal VC matrix with diagonal blocks given by multiples of the identity matrix) or pdSymm (id. with PD matrices). I would be happy to try to give more details with a small working example.
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| Nov 24, 2012 at 18:17 | comment | added | Blain Waan | @chl is there any suggestion for me regarding this problem? I have failed to fix it. | |
| Nov 20, 2012 at 1:43 | comment | added | Blain Waan | Yes I have individual measures for all 8 conditions. | |
| Nov 19, 2012 at 20:47 | history | edited | chl |
edited tags
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| Nov 19, 2012 at 20:46 | comment | added | chl | Do you have individual measures for all 8 conditions (crossed factors $a$ and $b$)? | |
| Nov 19, 2012 at 18:35 | history | edited | Blain Waan | CC BY-SA 3.0 |
edited title
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| Nov 19, 2012 at 15:47 | history | asked | Blain Waan | CC BY-SA 3.0 |