Network Analysis: Finding shortest path in QGIS

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Introduction

Calculating the shortest distance between two points is a commonly cited use for GIS. QGIS ships with this tool, but it’s not visible by default. In this tutorial we will show you what you need to get started.

Data

Acquired QGIS (version 2.6)

QgisLOGO.PNG You need to install Quantum GIS version 2.6 in order to get activate the road graph plugin.

Road Graph Plugin

  • Activate the Tool
Plugin.PNG













To activate the Road Graph plugin: Start the Plugin Manager by clicking on the QGIS main window’s menu item Plugins ‣ Manage Plugins. A dialog appears. Click OK on the Plugin Manager dialog.



This panel will appear in your interface

Panel.PNG












If the plugin doesn't show automatically in your interface, go to View ‣ Panels and ensure that Shortest path has a check mark next to it.


  • Configure the Tool
Config.PNG








  • Use the Tool
  • Using Criteria

Conclusion

References

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