[R-sig-Geo] maptools::as.im.RasterLayer with factor layers

[Matt Lewis]

Dear all, 

Not so much a question as a bit of adapted code. 

Recently, I've been working with the spatstat package and using maptools
to convert raster objects to spatstat's im format. One issue I have been
having is the conversion of factor raster layers to im. To that end,
I've adapted the maptools::as.im.RasterLayer() function to work with
factor layers. 

I realise that quite possibly this is a problem that has an alternative
solution that I'm unaware of, but in case my adapted function is useful
to others or something which you would like to include in the next
release of maptools, I have attached it here. 

Thanks for your work with maptools, and with all best wishes, 

Matt 

This email was originally sent to Roger Bivand who directed me to this
list.

-- 
Matt Lewis (he/him)
MPhil Student

Insect Ecology Group
Department of Zoology
University of Cambridge
CB2 3EJ

ml807 using cam.ac.uk | matthewlewis896 using gmail.com
@matthewlewis896
https://www.zoo.cam.ac.uk/directory/matthew-lewis
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