Class: QgsGraph

class qgis.analysis.QgsGraph

Bases: sip.wrapper

Constructor for QgsGraph.

QgsGraph(QgsGraph)

Mathematical graph representation

New in version 3.0: Enums

Methods

addEdge	Add an edge to the graph, going from the fromVertexIdx to toVertexIdx.
addVertex	Add a vertex to the graph
edge	Returns edge at given index
edgeCount	Returns number of graph edges
findVertex	Find vertex by associated point
vertex	Returns vertex at given index
vertexCount	Returns number of graph vertices

Signals

Attributes

addEdge(self, fromVertexIdx: int, toVertexIdx: int, strategies: Iterable[Any]) → int

Add an edge to the graph, going from the fromVertexIdx to toVertexIdx.

addVertex(self, pt: QgsPointXY) → int

Add a vertex to the graph

edge(self, idx: int) → QgsGraphEdge

Returns edge at given index

edgeCount(self) → int

Returns number of graph edges

findVertex(self, pt: QgsPointXY) → int

Find vertex by associated point

Returns

vertex index

vertex(self, idx: int) → QgsGraphVertex

Returns vertex at given index

vertexCount(self) → int

Returns number of graph vertices