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I have 2 lines in 2 layer and I want to make a split where it is crossing each other/intersection point in Qgis 2.16

I want to make one line from the 2 line in the crossing point. I want the new line to be constant. I need the blue line in the pics after splitting. DONT know how to split it in the crossing point...

I have a good picture to see what I really want to do. enter image description here

1 Answer 1

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Try to do the following:

  1. Use Split lines with lines two times. The first time use Line 1 as input and Line 2 as split line, and save the output file (output_1.shp)

enter image description here

  1. The second time use Line 2 as input and Line 1 as split line, and save the output file (output_2.shp)

enter image description here

  1. Use Merge Vector Layers to merge (output 1) and (output 2) together and save the output (Merge.shp)

enter image description here

  1. Load (Merge.shp) into QGIS. Select the the lines that you want, save the selected files into a new shapefile.

enter image description here

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