I'm using QGIS 3 to see if point features I have from a delimited text layer can be selected based on if they cross / are overlayed on a specific color from a separate raster layer. I'm using point source emission data to analyze emission levels in cities for a university project. The raster layer (geotiff) was obtained from this source: https://www.arcgis.com/home/item.html?id=fc92d38533d440078f17678ebc20e8e2
I'm trying to see what point emission values interact with the "Built Area" portion of the raster which is a specific color. If there is a way to select and export only the "Built Area" portion of the raster that would also work, but I wasn't sure if this could be done either.