I want to generate a raster for testing purposes. I'm using QGIS and I was hoping it would have the tools to do this but I couldn't find a way.
The raster should be 1001 m x 1001 m in size with each point being 1 m x 1 m. The center point should be 500m high and the surrounding points (including the diagonal points) should linearly descent until reaching 0m at the very edge of the pyramid (i.e. 1m descent per point).
This raster should be centered to geographic location 0.0, 0.0 in WGS84 datum.
I'm hoping there's a way to do this in QGIS but other (free) tools are welcome as well.