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2010 Jul 01
0
Cholmod warning when fitting a poisson GLMM
Hi, I am getting a warning message when I am fitting a generalized mixed model (mod_2) and I don't understand why because when I add just an interaction factor the model works perfectly (mod_1). Does anyone know what it happpens ? Thanks, Aïda   > mod_1<-lmer(sur15~soeviv15_4plus+frviv15_4plus+frat_15death+dad_class_new+soeviv15_4plus:dad_class_new +frviv15_4plus:dad_class_new+ aine+ageatmumdeath+(1|newparish)+(1|mumID)+(1|cohorte), + weights=prop_off_tracked_to_age_15,family...
2011 Oct 24
1
using lme and 'by' function to extract the co-efficients by individuals
...in 'vpue' with my random variable being 'ns_a_vpue'. The problem I am having is that the co-efficients for all my individuals are returning as the same! So I'm not getting the individuals co-efficients, I'm not even sure what it is returning. Here is a sample of my code: mod_1 <- lme(pots_hauled ~ rc_a_vpue ,(random = ~1 | a_vpue), data = data1) by(data1, id, summary) by(data1, list(pots_hauled=pots_hauled,id=id ), summary) by(data1, id, function(x) lme(pots_hauled ~ a_vpue ,(random = ~1 | ns_a_vpue), data = data1))) lmid <- by(data1, id, function(x) lme(po...