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fixed-effect model matrix is rank deficient so dropping 27 columns / coefficients AND boundary (singular)
Study background: I want to see if mean caterpillar abundance for a given year and within a given population, can explain differences in bird(blue tit) density. The blue tits breed in nest boxes, so I...
cpc
Votes: 0
Answers: 1
Singular in MuMIn::dredge
I'm about to run a glm model to test my hypothesis.
Once I ran the model I got a singularity warning massage:
glmakde_mdDredge <- lmer(log(akdearea) ~ 1 + age_binary + sex + trimester_number + Year...
Shlomo Cain
Votes: 0
Answers: 1
Comparing mixed models: singular fit for random effect group but only in some models. Should I drop RE group from all models or just where singular?
I am fitting several mixed models using the lmer function in the package lme4, each with the same fixed effects and random effects, but different response variables. The purpose of these models is to ...
Oscar Clendon
Votes: 0
Answers: 2
Double numerical integration in Matlab - Singularity
I have discrete data of a 2D function defined as
theta = linspace(0,pi,nTheta);
phi = linspace(0,2*pi,nPhi);
p=zeros(nPhi,nTheta);%only to show the dimension of my matrix
[np,nt]=ndgrid(phi,theta);
f1...
user2966501
Votes: 0
Answers: 0