In QGIS raster calculator I do:
Plus (+)
And I get:
The red circle in the middle is like cut in the result, QGIS it's not adding every pixel on each raster, it makes a kind of intersecction…
If i select in the QGIS layer selector the two layers to be added (using blending effects = multiply) i get visually pretty much what I spected to see when making the raster calculation adding:
How could I make a real adding calculation between two rasters?
Best Answer
Try to replace your Nodata values with 0 and repeat your calculation. To do that you could try: Change NODATA pixel value in raster to arbitrary value.