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Fix Link Orientation

Summary

Check links are oriented downslope.

Tags:
hydrography, graph

Usage

• Wrongly oriented links can be either modified and reversed (default), or selected in the input layer.
• Input nodes must have Z coordinate (extracted from a DEM for example).
• Optionnaly, outlets can be specified by selecting relevant nodes in the node layer.

Parameters

Parameter	Description	Type
Input layer INPUT		QgsProcessingParameterFeatureSource
Do Not Modify and Select Mis-Oriented Links DRYRUN		QgsProcessingParameterBoolean
From Node Field FROM_NODE_FIELD	Default value: NODEA	QgsProcessingParameterField
To Node Field TO_NODE_FIELD	Default value: NODEB	QgsProcessingParameterField
Nodes with Z coordinate NODES		QgsProcessingParameterFeatureSource
How To Define Outlets OUTLETS_DEFINITION		QgsProcessingParameterEnum
Node Primary Key NODE_PK_FIELD	Default value: GID	QgsProcessingParameterField
Oriented Network OUTPUT		QgsProcessingParameterFeatureSink