Multi-session analysis AND mask

questions concerning anlysis/theory using program DENSITY and R package secr. Focus on spatially-explicit analysis.

Multi-session analysis AND mask

Postby ctlamb » Tue May 02, 2017 9:56 pm

Hello,

I am looking to conduct a multi-session analysis conducted over five years. The trap grids are non-overlapping, however, the masks will be due to the ranging behaviour of the study animal:

Image

I have an annual variable that I want to assign to each session, and am unclear how to do this, as in the overlapping areas the mask will then have two values for that annual variable.

I thought that is post was part of the solution to my problem, but it seems that my issue may be "terminal"
http://www.phidot.org/forum/viewtopic.php?f=36&t=1962&p=5871&hilit=session+mask+covariate#p5871

Is it still terminal or can this now be coded? I had envisioned using a list of sessions and masks in my secr.fit call to get around this?

Cheers,
Clayton
ctlamb
 
Posts: 48
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Re: Multi-session analysis AND mask

Postby ctlamb » Wed May 03, 2017 12:04 am

Further googling revealed that this was recently solved in the new 'secr' release, and in this vignette:

http://www.otago.ac.nz/density/pdfs/sec ... ession.pdf


"As an alternative to a single spatial data source, the spatialdata argument may be a list of spatial data sources, one per mask, in the order of the sessions in the corresponding capthist object."
ctlamb
 
Posts: 48
Joined: Mon Nov 04, 2013 9:44 pm


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