Calculating suitable area based on product of 2 binary layers
Geographic Information Systems Asked by qgis_newbie on May 18, 2021
In QGIS I am attempting to calculate the suitable area based on two reclassified layers (Raster tools -> Reclassify by range) that have been overlaid with SAGA -> Raster calculus -> Product. Each layer is for one species, and I am trying to find the overlap area of suitable habitat. I am using binary values for suitability: 0 for unsuitable, 1 for suitable.
So, in the reclassification, each layer has only those two values. In the product, then, suitable habitat for both species (what I’m looking for) will have a product of 1, and all other values will have a product of 0.
I am looking for a way to calculate and be able to extract only the total area of overlap where the product is 1. How can I achieve that?
One Answer
Try the Processing/Processing Toolbox/Raster Analysis/Raster Unique Values Report on your Raster Calculus product layer. It will count and report the total area of the pixels with zeros and ones:
Answered by Dave X on May 18, 2021
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