Home range with impassable bounds

[Tristan Swartout]

Hello all

To start, I am new to the ctmm package. But for a class project I am calculating AKDE of male deer home ranges in a captive population. While I have been successful at generating home ranges for each individual deer using the ctmm package, their AKDE have predicted boudns outside the fence. I am wondering if there is a way to use the AKDE function to account for impassable bounds such as a high fence and a large lake within the property. I do have a shapefile created of the property boundaries if that is helpful. Any help would be greatly appreciated. 

Best,

Tristan

[Tyler]

Hi Tristan,

There is a good example of how to impose a hard boundary here: https://groups.google.com/g/ctmm-user/c/nTI_FMeoE5k/m/dtI7Fej-BAAJ. Take a look at the attached code and the follow-up message with a few corrections at the bottom.

Hope this helps.

Tyler

[Tristan Swartout]

Thank you so much for the help! I added the shapefile to the SP argument and now everything is running smoothly!

[Nazareno Campioni]

Hi all!

I've been catching up with these past conversations on how to impose hard boundaries, unfortunately I haven't understood how to do it yet. I'm new to R so still getting confused about shapefile, rasters etc.

Would anyone be able to share their code where they've successfully estimated the home range with hard boundaries?

Cheers,

Nazareno

[Christen Fleming]

Hi Nazareno,

You can see the SP and SP.in arguments in help("akde") and this paper: https://www.biorxiv.org/content/10.1101/2024.11.20.624379v1

which is accepted for publication in MEE.

Best,

Chris