I have two shapefiles. One is broken into the regions I need to use, the other has much more detail along the coast line. I'd like to use either intersect or clip to get a more detailed coastline on the eastern edge of the map, but I wind up with a blank layer with both.
vector > geoprocessing tools > intersect the new layer is empty no matter how I arrange the settings. If I use
vector > geoprocessing tools > clip and put the big unified polygon as the "input vector" I wind up with the opposite of what I want -- a new layer that has one big polygon and no coastal detail. What I want is a layer of small polygons with coastal detail. What am I doing wrong here?
I'm working in QGIS, though if this would be easier to do in PostGIS I can also use CartoDB.