Join multiple lines

By Daan Goedkoop

Introduction

After selecting multiple features of a line layer, this plugin can merge them into one feature with a continuous line.

The plugin will automatically put the selected lines in a geographically logical order and direction. If the end points of two lines do not match exactly, a line segment between both points is added to make the end result a single, continuous line. The attributes of the new line will be those of one of the selected features, but one cannot predict which one.

Testing

A test project / layer has been supplied to experiment with and see the characteristics of the plugin.

Version history

• 0.1: 26-04-2013
  • Initial version
• 0.2: 29-04-2013
  • Produce valid geometry if begin and end vertices are identical.
• 0.3: 03-02-2014
  • Update for QGis 2.0
  • Operation is now a single undo/redo-step, instead of having a separate step for the removal of the superfluous features.
• 0.4: 22-01-2018
  • Update for QGis 3.0
  • Support multi-part lines
• 0.4.1: 30-11-2018
  • Bug fix for displaying warnings