Hy2roresO

Hy2roresO is a QGIS plugin able to compute various hierarchisation stream orders, such as Strahler order, Horton order or Shrieve order, from an input shapefile.

The code is open source, and available on GitHub.

The main documentation for the site is organized into a couple sections:

• User Documentation
• Developer Documentation

Information about development is also available:

• About Hy2roresO

User Documentation

• Introduction
  • Strahler stream order
  • Shreve stream order
  • Horton stream order
• Getting Started
  • A quick introduction
  • Installing the plugin
• How to…?
  • Preparation of the process
  • Step 1 : essential parameters
  • Step 2 : optional parameters
  • Step 3 : process and output
  • End of the algorithm
• Results
  • Simple network
  • Single island
  • Complex island
  • Whole network
  • Computation of the strokes
  • Comparison between other existing plugins for stream order computation

Developer Documentation

• Approach & Strategy
  • General strategy
  • Input data
  • The algorithm
  • Update of the attribute table of the input layer
• Documentation
  • Classes
  • Instanciations of the classes
  • Correct edges directions
  • Sources and sinks
  • Island detection
  • Orders
  • Write in table
  • Dialog messages
  • Save output
• Perspectives

About Hy2roresO

• Team
• Story
• Acknowledgment
• Contribute