The difference method should work. But I'm not sure if it works with a polygon and polyline.
Which difference do you want to calculate.
Are the polylines closed? If so you could make polygons out of them. That should work better.
Here's an example of the usage of Difference: http://www.mapwindow.org/documentation/mapwingis4.8/_create_buffer_8cs-example.html
It is however using only polygons.
Paul
Which difference do you want to calculate.
Are the polylines closed? If so you could make polygons out of them. That should work better.
Here's an example of the usage of Difference: http://www.mapwindow.org/documentation/mapwingis4.8/_create_buffer_8cs-example.html
It is however using only polygons.
Paul
