Okay so I'm using QGIS 2.10 (a couple of versions out of date, but shouldn't matter much, eh?) on Windows 7, and I can't figure out this supposedly a very basic geoprocessing tool DIFFERENCE.
I'm trying to use a small polygon to find the DIFFERENCE in a larger polygon that completely covers the smaller polygon, so the result should be the larger polygon minus the smaller polygon, and the shape would look like a donut or bagel, but every time the result comes back as empty.
I'm not sure what I'm doing wrong here, I tried switching the layers and nothing worked either.
I mean, there's only 2 inputs and 1 output for this tool, how difficult could it be?