Topologize Polylines

Author: Copyright (c) 2018-2022 by Johan Van de Wauw
Menu: Shapes | Lines | Topology

Description

The topology module will convert a shapefile containing lines to a topological network of lines: the direction of every line (i.e., the point order) is used to create a network from and to nodes.

It will convert start and endpoints of every line to nodes
a new line shape is created with three attributes
the start_id and end_id will refer to the node_id, the length is the original length
the shape is either the original shape, or a simplified straight line between the nodes if _SIMPLIFY_ is selected
if the original shapefile contains multiparts (e.g., e in the example above) each part will be exported as a separate line

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Input Lines	shapes, input	`INPUTLINES`	-	-
Input	Target grid (for grid system)	grid, input, optional	`SYSTEM`	-	-
Output	Output Lines	shapes, output	`OUTPUTLINES`	-	-
Output	Output Nodes	shapes, output, optional	`OUTPUTPOINTS`	-	-
Options	Tolerance Distance	floating point number	`TOLERANCE`	-	Default: 0.010000
	Grid system	grid system	`SYSTEM_GRIDSYSTEM`	-	-
	Simplify	boolean	`SIMPLIFY`	-	Default: 0

Command Line


Usage: saga_cmd shapes_lines 16 [-INPUTLINES ] [-OUTPUTLINES ] [-OUTPUTPOINTS ] [-TOLERANCE ] [-SYSTEM ] [-SIMPLIFY ]
  -INPUTLINES:  	Input Lines
	shapes, input
  -OUTPUTLINES: 	Output Lines
	shapes, output
  -OUTPUTPOINTS:	Output Nodes
	shapes, output, optional
  -TOLERANCE:	Tolerance Distance
	floating point number
	Default: 0.010000
  -SYSTEM:      	Target grid (for grid system)
	grid, input, optional
  -SIMPLIFY:    	Simplify
	boolean
	Default: 0