4

Imagine I have some bus lines each with a different colour, and sometimes the different bus lines run on the same road, but I don't want one of them to disappear.

Is it possible to make them show as parallel like in the picture?

enter image description here

If I just simply draw the lines in parallel to each other, they will change appearance a lot as a zoom in or out and I would not have a consistent width between them.

6

You can add a property "offset" to each line segment, draw the lines on top of each others and then apply an offset based on the recorded value.

This way, the offset can be maintained as you zoom in or out, and you have more flexibility than a fully automated solution to make it look good.

In the example below, the same line was copy-pasted 5 times, with a field named offset having the values -2, -1, 0 , 1, 2.

To the right of the offset setting, click the little epsilon symbol, choose edit and just write the field name (here, offset) and eventually a multiplier. Make sure the unit remains millimeters or pixels but not map units

enter image description here

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  • What if the lines are only next to each other in a small segment of the road? What if they are separate then connect at one road and then separate again? I wouldn't want the offset to apply to the whole line. Or do I just have to make a separate line for this part? – Victor Nielsen Sep 14 at 20:24
  • Yes, that is what I mean by add a property "offset" to each line segment, so the same bus line can have various offset along its route (maybe start with an offset to the left (negative), then it is by itself on a street with an offset of 0 and join a main collector street with an offset to the right (positive)) – JGH Sep 14 at 20:44
  • Will each line segment need to be split up as multiple attributes? – Victor Nielsen Sep 14 at 21:34
  • I have not been able to find the tool that allows this offset. – Victor Nielsen Sep 17 at 15:40
  • 1
    @VictorNielsen it is in the layer styling options – JGH Sep 17 at 18:21

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