Creating resistance layer (reverse of habitat suitability)

LeiliKhalatbari

Hi,

I need to create a resistance layer from habitat suitability layer (basically the reverse of this layer), but I don't know how to do that! I found somewhere to do it with Map Algebra/Raster calculation, but I don't know who should I do it. 

Can someone help me with this please?

Many thanks,

Leili

curtvprice

> I need to create a resistance layer from habitat suitability layer (basically the reverse of this layer)

Depending on how you want to scale the data (arithmetically or geometrically) you can either multiply by -1 ("suit" * -1) or invert it (1.0 / "suit").