I have source layer with areas (polygons) and intersect (second) layer with simple polyline structure. When I set up intersection, I got 6 objects in the results, its ok. After that I need to export to DXF or MIF only that parts (areas) of source layer, that intersects with intersect (second) layer.

So, how can I do that? If I select just my newly created intersection layer and export it to DXF - it just displays a second (intersect layer), not a intersect parts of source layer.


Instead of using the intersection tool, you could try doing the following:

  1. Use the Select by location tool from the menubar:

    Vector > Research Tools > Select by location


    Processing Toolbox > QGIS geoalgorithms > Vector selection tools > Select by location

  1. Select the polygon layer as the Layer to select from and your line layer as the Additional layer. Then choose the intersects predicate as shown in the image:

    Select by location

    Run the tool.

  1. The polygons which intersect the lines should be selected. Now you can right-click the polygon layer, choose Save As... set the output format and make sure you check the Save only selected features option:

    Save selected features

    The output should hopefully contain the polygons which intersect the lines in your specified format.

  • @geosys - Most welcome, glad it worked :) – Joseph Jan 17 '17 at 11:15

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