In geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch at any point are said to be parallel.

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How to create one-sided buffers or parallel lines in PostGIS?

I'm looking for a way to create so-called one-sided buffers or parallel lines in PostGIS. Example: 1. buffer, 2. one-side, 3. both-sides I've found some discussion on the mailing list from 2009 and ...
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how to find close and parallel lines

I need help with script for QA of water network. I need to find all lines that are almost parallel and close to each other less then 2 meters. The script have 3 stages: add azimuth field and ...
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How to Display Overlapping Lines?

I have multiple line layers that represent bus routes and many of the routes overlap (i.e. near terminals, transfer locations, etc.) Is there a function in Qgis which will display both features next/...
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Tracklogs to single line OR several lines to one line?

Setting: I have several trucks driving out of my factory delivering goods and coming back for more deliveries. These trucks are equipped with GPS so that they may return tracklogs to me. These ...
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1answer
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How to create a line in a given distance to an existing one?

I am looking for a possibility to create a second line in a given distance to an existing line. The existing line is curved, so simply create parallel line segments with CAD tools will not work. Any ...
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Selecting parallel line segments but not segments that intersect

I have 2 different shapefiles that each have railroad track on them. Most of the track being displayed is the same, but since it is coming from 2 different sources, the physical lines themselves are ...