I have a line file and a polygon file in QGIS.
Primarily I am looking for any polygon that has a line intersecting it - easy, sorted.
From these intersects, I then want to pull out just the polygons that have a line going all the way through them and ignore those where the line ends within the polygon. See the below diagram for an explanation: I only want polygons 2 and 3.
Does that make sense? I haven't managed to find any predefined tools thus far.