I seek advice for calculating presence/absence of features in QGIS. I have a polygon dataset of boundary outlines and a number of other datasets which I want to compare it against for presence/absence of features within the main boundary dataset.
Can I do this using the vector datasets as is or will I need to convert then to a grid/raster beforehand?
My example is I have OS administrative boundaries an OS open green spaces data, I would like to know whether an area of open green space is present or absent from each boundary polygon. I was thinking about using the Join attributes by location and intersect, but don't know if that is flexible enough to give a simple yes/no answer for each boundary polygon.