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I am using QGIS.

I have a certain numbers of areas (shp) and different channels (shp). Now i want to know how many meters of the different channels are within the individual areas. the Intersect tool only allows to choose individual

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  • Merge all the layers in each category, then intersect.
    – Erik
    Dec 3, 2019 at 10:40
  • I allready tried this, as a result i get the the length of each channel but for the entire area
    – Klini
    Dec 3, 2019 at 10:55
  • Then you're not doing it correctly, most likely you dissolved the polygons.
    – Erik
    Dec 3, 2019 at 11:59
  • what i did is merge vector layer and I'm having all of attributes in the table. So I'm pretty sure that i did not dissolved them
    – Klini
    Dec 3, 2019 at 12:24

1 Answer 1

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This is my layer of polygons and lines.

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Then you use the tool "sum of line lengths"

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The result is a new polygonal layer (the same as the one at the entrance) but with 2 new fields: the first indicating the line length that crosses the polygon and the second field the number of lines that cross it.

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  • Thx that works for me
    – Klini
    Dec 3, 2019 at 13:10
  • With pleasure. In order to show that you have obtained a satisfactory answer, you can vote for my answer. See you later
    – Vincent Bré
    Dec 3, 2019 at 13:39

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