increasing maxit control argument message from R

[Paul Rudershausen]

Hello Unmarked users:

I did a search for the 'Try increasing maxit control argument' message from R, on this site, and if I understand the issue (which I may not) I do not think any of the previously posted threads on this topic exactly match my situation.

I have a data set on occupancy of a fish species, with 24 rows (sites) and 10 visits (columns).  I have an observation level covariate (salinity) collected at each site and over each visit.   I standardized this covariate before running the model.  This aforementioned message from R  pops up after I run a simple model with salinity as the only observation-level covariate (and no covariates at the site-level).

In looking at the pdf documentation for R package unmarked it was not apparent to me how the maxit control argument is changed when running the function 'occu' (or when running the function 'pcount' if the same message arises for N mixture models).

Thank you for any insights, Paul

[Richard Chandler]

Hi Paul,

I suggest trying something like this:

library(unmarked)

example(occu)

fm <- occu(~ obsvar1 ~ 1, pferUMF, control=list(maxit=1000, trace=TRUE, REPORT=1))

Richard

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Richard Chandler

Assistant Professor

Warnell School of Forestry and Natural Resources

University of Georgia

706-542-5815

Lab website

[Paul Rudershausen]

This worked perfectly.  Thank you very much Richard. 

paul