Feature Request - Improve Visibility of Parallel Lines with Different Colors

[rwolfdev]

When two lines are parallel but use different colors, the current rendering causes one line to overlap and hide the other. To improve readability and clarity, it would be helpful if parallel lines were displayed slightly offset from one another. This ensures that both colors remain visible and makes it easier to identify sections where the lines run parallel.

Proposed behavior:

• Detect when two or more colored lines are parallel.
• If the colors differ, render the lines with a small lateral offset.
• Maintain the visual alignment so users can clearly see parallel paths without color overlap.

This enhancement would significantly improve the visual clarity of parallel line data.

[stan-smith]

@rwolfdev hey! Thanks for letting me know, can you provide a screenshot please :)
Thanks,
Stan

[stan-smith]

@rwolfdev any updates?

[rwolfdev]

Hey @stan-smith
sorry for the delay, here is the screenshot:

[stan-smith]

Hmm that is a tricky one. I suppose the challenge is scaling, so if you have for instance 20 or 30 lines reducing into one, how would we differentiate that? I know it's an extreme example, but just thinking.
Be interested to hear your thoughts, thanks for the suggestions already provided @rwolfdev
-Stan

[oleole39]

I suppose the challenge is scaling, so if you have for instance 20 or 30 lines reducing into one, how would we differentiate that? I know it's an extreme example, but just thinking.

One side idea would be an interconnection mark at the beginning and end of each "multiplexed" segment. See for instance the white circle/shape in various metro maps:

• https://metromap.fr/assets/img/share.png
• https://metromap.in/wp-content/uploads/2025/08/DMRC-Metro-Map.png

[rwolfdev]

@oleole39 good idea!