[R] mixed-effects model with two fixed effects: interaction

Dear all, In a greenhouse experiment we tested performance of 4 different species (B,H,P,R) under 3 different water levels in 10 replications. As response variable e.g. the number of emerging sprouts were measured on three dates. A simple Anova considering every measurement date separately shows

Re: [R] convergence error code in mixed effects models

d give you > estimates (not to > mention p-values, something that the author of lmer > has been woefully > negligent in not providing :-) but you probably > won't get much of a > hint that the model doesn't make sense. I would > prefer to start with > the plot an

Re: [R] convergence error code in mixed effects models

Within-Group Residuals: Min Q1 Med Q3 Max -1.34714254 -0.53042878 -0.01769195 0.40644540 2.29301560 Number of Observations: 40 Number of Groups: 10 Is there a solution for this problem? Thanks!!! Ilona --- Douglas Bates <[EMAIL PROTECTED]> schrieb:

[R] convergence error code in mixed effects models

eaf|rep) Error in lme.formula(leaf~ treat, random = ~week|rep) : nlminb problem, convergence error code = 1; message = iteration limit reached without convergence (9) Has anybody an idea to solve this problem? Thanks Ilona Ilona Leyer Conservation B