search for: plotti

...to use the function "lmer" in package "lme4" as suggested by Spencer Graves and Filippo Piro. I remember to you that my data were: land use classes, 3 levels (fixed factor) = cla (R variable) plot number, 98 levels each with 4 replicates (random factor within "cla") = plotti (R variable) number of species, totally 392 counts, response variable = sp (R variable) Now, I started my analysis as follow (after the creation of the data.frame "bacaro"): mod1<-lmer(sp~cla+(1|cla:plotti), data=bacaro, family=poisson(link=log)) > summary(mod1) #sunto del mode...

...ed to use the function "lmer" in package "lme4" as suggested by Spencer Graves and Filippo Piro. I remember you that my data were: land use classes, 3 levels (fixed factor) = cla (R variable) plot number, 98 levels each with 4 replicates (random factor within "cla") = plotti (R variable) number of species, totally 392 counts, response variable = sp (R variable) Now, I startd my analysis as follow (after the creation of the data.frame "bacaro"): mod1<-lmer(sp~cla+(1|cla:plotti), data=bacaro, family=poisson(link=log)) > summary(mod1) #sunto del model...

Dear all, I had a R segmentation fault, and then invoked debug mode and ran step by step. When I reached "terms(Y~X1*X2*...*X16)", I would then have "segmentation" fault. However, if I just ran this under regular "R interactive" mode, it would be fine though taking long time. My questions are: 1. Is there a known limit of terms for a formula? 2. Why does the

Dear all, I had a R segmentation fault, and then invoked debug mode and ran step by step. When I reached "terms(Y~X1*X2*...*X16)", I would then have "segmentation" fault. However, if I just ran this under regular "R interactive" mode, it would be fine though taking long time. My questions are: 1. Is there a known limit of terms for a formula? 2. Why does the