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I have created a uniform (nominally square) gird of polygons using the grid tool. I have a road network layer that consists of lines. What I would like to do is iterate over the grid polygons and clip the road network within each square. I can certainly clip the road network out using a single polygon but I would like to automate the process :-) (160+ polygons in the grid!).

Happy to use QGIS 2.14 or 2.18!

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You need to use clip tool, from Processing toolbox -> QGIS geoalgorithms -> Vector overlay tools -> Clip, as follows:

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Select the roads as input layer and grid as clipping layer, and select the green arrow beside the clipping grid

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The output will be clipped roads based on each grid polygon.

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  • My version of qgis doesn't have the 'Vector Overlay Tools' option in Processing->Geoprocessing (neither 2.18.3 or 2.14.11). Where do they come from? Commented Feb 27, 2017 at 0:10
  • Ok. Fixed. Had to remove ~/.qgis2. Menus got messed up when installing new version... Commented Feb 27, 2017 at 0:40
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    @GlennGeers - Don't forget to accept this answer by clicking the green-faded tick on the left-hand side of this post :) Commented Feb 28, 2017 at 14:01

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