Hi, I am using nlme for data from nested design. That is, "tows" are nested within "trip", "trips" nested within "vessel", and "vessels" nested within "season". I also have several covariates, say "tow_time", "latitude" and "depth" My model is y = season + tow_time + latitude + depth + vessel(season) + trip(season, vessel) + e
In SAS, the program would be proc mixed NOCLPRINT NOITPRINT data=obtwl.x; class vessel trip tow season depth; model y = season depth latitude /solution; <----------fixed effects random vessel(season) trip(season vessel); run; My question is: How this nested mixed-effects model can be fitted in R- "nlme"? Thanks in advance for the helps. Cheers! Han
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