I am using QGIS. I have a vector layer with about 600,000 overlapping polygons, each with an assigned risk value as attribute. I want to create a raster layer which shows the total risk value at each pixel, but when I rasterise the vector it just keeps the pixel value of the polygon which is highest in the attribute table/drawing order.
Is there any way to achieve what I want without splitting every polygon into a separate layer (which seems like an impossible task)?