I have a lot of rasters files (more than 6000), each one represents the presence and absence of a species -1 for presence and NoData for absence. The set of rasters covers the whole Latin America and they can overlap eventually. I also have a vector polygon layer which bounds an area in which I am interested in. As a final goal, I would like to sum all the species in each grid in my area of study. Any ideas on how to achieve this? I have tried to sum all raster using Grid Sum in Saga and in order to clip it afterwards. Problem is that the output has only NaN and zeros values - which does not make sense... I used a sample of 100 rasters, in order to test it. And it lasts more than two hours! Any ideas on how to do it faster?!
أكثر...
أكثر...