I have an accurate contour data set but want to make it smaller for export to a GPS, so how do I consistently trim the polylines off outside the green polygon - the split tool seems to work on some lines but not others, it's a poor version of AutoCAD's fence tool that's for sure. I managed to trim 50 line in one go a couple of time but the tool seems to stop working /only work on singles.
I can do this in QGIS but it'd be nice to save the roundabout trip. I don't want to build a model in VW as I want get contours back in the same place as they appear now.
System is VW2018.