[R-sig-Geo] Restricting geographical space for SDM analyses in R

[Ben Tupper]

Hi,

You can limit the domain of your modeling to irregular polygons such
as a coastline buffered to some +/- distance inshore/offshore, but the
ease of doing so depends upon your data and covariates. You haven't
provided much detail (well, none actually) so it's a challenge to
suggest anything.  For the vector/point data take a look at the sf
package (https://CRAN.R-project.org/package=sf) or sp
(https://CRAN.R-project.org/package=sp) packages, and for rasterized
data you could try raster (https://CRAN.R-project.org/package=raster),
terra (https://CRAN.R-project.org/package=terra) or stars
(https://CRAN.R-project.org/package=stars) packages.

Cheers,
Ben

On Mon, Nov 16, 2020 at 6:44 AM Francisco Borges
<franciscoomcborges using gmail.com> wrote:
>
> I am conducting SDM analysis in R, and would like to restrict my
> predictions in the geographical space. I am aware of how to do it by
> cropping the world space with latitude and longitude, but my case is a
> little bit trickier.
>
> I want to restrict my analysis to only the coastal area (i.e. from ocean
> to, let's say a certain distance inland). I have yet to find a solution
> online to this question, but I am aware that using a shapefile it could
> work.
>
> I have zero knowledge of GIS, unfortunately, as I understand that this
> could be one of the solutions.
>
> I appreciate any info or suggestion you can provide me
>
> Best,
>
> *Francisco Borges*
>
> MARE – Marine and Environmental Sciences Centre
>
> Laboratório Marítimo da Guia - Faculdade de Ciências da Universidade de
> Lisboa
>
>
> Av. Nossa Senhora do Cabo, 939
>
> 2750-374 Cascais, Portugal
>
> Tel: +351 214 869 211
>
>
>
>
> publons.com/a/1504585/
> orcid.org/0000-0002-3911-0421
> http://www.mare-centre.pt/pt/user/8232
>
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-- 
Ben Tupper
Bigelow Laboratory for Ocean Science
East Boothbay, Maine
http://www.bigelow.org/
https://eco.bigelow.org