Polygon Categories to Grid

Author: O.Conrad (c) 2018
Menu: Grid | Gridding | Polygons

Description

This tool has been designed to rasterize polygons representing categories and selects that category, which has maximum coverage of a cell. The advantage using this tool (instead the more simple 'Shapes to Grid' or 'Polygons to Grid' tools) is that it summarizes all polygon coverages belonging to the same category.

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Polygons	shapes, input	`POLYGONS`	-	-
Input	Target System	grid, input, optional	`TARGET_TEMPLATE`	use this grid's system for output grids	-
Output	Classification	table, output, optional	`CLASSES`	Classification look-up table for interpretation of resulting grid cell values.	-
	Category	grid, output	`CATEGORY`	-	-
	Coverage	grid, output, optional	`COVERAGE`	-	-
Options	Category	table field	`FIELD`	The attribute field that specifies the category a polygon belongs to.	-
	Method	choice	`METHOD`	Choose cell wise, if you have not many polygons. Polygon wise will show much better performance, if you have many (small) polygons.	Available Choices: [0] cell wise [1] polygon wise Default: 1
	Multiple Polygons	choice	`MULTIPLE`	Output value for cells that intersect wiht more than one polygon.	Available Choices: [0] minimum coverage [1] maximum coverage Default: 1
	Target Grid System	choice	`TARGET_DEFINITION`	-	Available Choices: [0] user defined [1] grid or grid system Default: 0
	Cellsize	floating point number	`TARGET_USER_SIZE`	-	Minimum: 0.000000 Default: 1.000000
	West	floating point number	`TARGET_USER_XMIN`	-	Default: 0.000000
	East	floating point number	`TARGET_USER_XMAX`	-	Default: 100.000000
	South	floating point number	`TARGET_USER_YMIN`	-	Default: 0.000000
	North	floating point number	`TARGET_USER_YMAX`	-	Default: 100.000000
	Columns	integer number	`TARGET_USER_COLS`	Number of cells in East-West direction.	Minimum: 1 Default: 101
	Rows	integer number	`TARGET_USER_ROWS`	Number of cells in North-South direction.	Minimum: 1 Default: 101
	Rounding	boolean	`TARGET_USER_FLAT`	Round bounding coordinates to multiples of cell size. Ignored if cell size has decimal places.	Default: 1
	Fit	choice	`TARGET_USER_FITS`	-	Available Choices: [0] nodes [1] cells Default: 0
	Grid System	grid system	`TARGET_SYSTEM`	-	-

Command Line


Usage: saga_cmd grid_gridding 10 [-POLYGONS ] [-FIELD ] [-METHOD ] [-MULTIPLE ] [-CLASSES ] [-TARGET_DEFINITION ] [-TARGET_USER_SIZE ] [-TARGET_USER_XMIN ] [-TARGET_USER_XMAX ] [-TARGET_USER_YMIN ] [-TARGET_USER_YMAX ] [-TARGET_USER_COLS ] [-TARGET_USER_ROWS ] [-TARGET_USER_FLAT ] [-TARGET_USER_FITS ] [-TARGET_TEMPLATE ] [-CATEGORY ] [-COVERAGE ]
  -POLYGONS:           	Polygons
	shapes, input
  -FIELD:              	Category
	table field
  -METHOD:             	Method
	choice
	Available Choices:
	[0] cell wise
	[1] polygon wise
	Default: 1
  -MULTIPLE:           	Multiple Polygons
	choice
	Available Choices:
	[0] minimum coverage
	[1] maximum coverage
	Default: 1
  -CLASSES:            	Classification
	table, output, optional
  -TARGET_DEFINITION:  	Target Grid System
	choice
	Available Choices:
	[0] user defined
	[1] grid or grid system
	Default: 0
  -TARGET_USER_SIZE:	Cellsize
	floating point number
	Minimum: 0.000000
	Default: 1.000000
  -TARGET_USER_XMIN:	West
	floating point number
	Default: 0.000000
  -TARGET_USER_XMAX:	East
	floating point number
	Default: 100.000000
  -TARGET_USER_YMIN:	South
	floating point number
	Default: 0.000000
  -TARGET_USER_YMAX:	North
	floating point number
	Default: 100.000000
  -TARGET_USER_COLS:   	Columns
	integer number
	Minimum: 1
	Default: 101
  -TARGET_USER_ROWS:   	Rows
	integer number
	Minimum: 1
	Default: 101
  -TARGET_USER_FLAT:   	Rounding
	boolean
	Default: 1
  -TARGET_USER_FITS:   	Fit
	choice
	Available Choices:
	[0] nodes
	[1] cells
	Default: 0
  -TARGET_TEMPLATE:    	Target System
	grid, input, optional
  -CATEGORY:           	Category
	grid, output
  -COVERAGE:           	Coverage
	grid, output, optional