Some models not appearing after running model selection function

[Anna V]

Hello,

I am a graduate student studying veiled chameleon ecology in southwest Florida and I am attempting to use ctmm’s to calculate home range sizes. I apologize if this question has been answered before in previous conversations, but I am quite new to ctmms and this has been a large obstacle in allowing me to continue my project forward.

I have noticed for some (most) of the lizards in my study (n = 10, tracked for 100 days as frequently as twice a day and as infrequently as once every four days, but usually once every other day), a few of the models do not appear when running the “summary(fitted.mods.[lizardID])” function. In the majority of cases, all of the anisotropic models would show up, but some of the other models, like OUf, OU or IID, would not. Then in a few lizards, some of the anisotropic models would not appear as well, only the OUF anisotropic, OU anisotropic, OUF, and OUf anisotropic models. I attached screenshots of what this looks like when run and a table of which models appear and which do not for each lizard. It seems like it might be related to differences in the manual fit of the variogram; at first I wasn’t saving my fitted GUESS objects for each individual, and models seemed to appear and disappear each time I refit.

Does anyone have any insight on why this may be and how to make it more consistent from animal to animal?

Thank you,

Anna Velten