Tool Polygon Categories to Grid
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.
- Author: O.Conrad (c) 2018
- Menu: Grid|Gridding|Polygons
Parameters
| Name | Type | Identifier | Description | Constraints |
Input | Polygons | Shapes, input | POLYGONS | - | - |
Target System (*) | Grid, input, optional, CMD | 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 | TARGET_USER_SIZE | - | Minimum: 0.000000 Default: 1.000000 |
West | Floating point | TARGET_USER_XMIN | - | Default: 0.000000 |
East | Floating point | TARGET_USER_XMAX | - | Default: 100.000000 |
South | Floating point | TARGET_USER_YMIN | - | Default: 0.000000 |
North | Floating point | TARGET_USER_YMAX | - | Default: 100.000000 |
Columns | Integer | TARGET_USER_COLS | Number of cells in East-West direction. | Minimum: 1 Default: 100 |
Rows | Integer | TARGET_USER_ROWS | Number of cells in North-South direction. | Minimum: 1 Default: 100 |
Fit | Choice | TARGET_USER_FITS | - | Available Choices: [0] nodes [1] cells Default: 0 |
Grid System | Grid system | TARGET_SYSTEM | - | - |
(*) optional |
Command-line
Usage: saga_cmd grid_gridding 10 [-POLYGONS <str>] [-FIELD <str>] [-METHOD <str>] [-MULTIPLE <str>] [-CLASSES <str>] [-TARGET_DEFINITION <str>] [-TARGET_USER_SIZE <double>] [-TARGET_USER_XMIN <double>] [-TARGET_USER_XMAX <double>] [-TARGET_USER_YMIN <double>] [-TARGET_USER_YMAX <double>] [-TARGET_USER_COLS <num>] [-TARGET_USER_ROWS <num>] [-TARGET_USER_FITS <str>] [-TARGET_TEMPLATE <str>] [-CATEGORY <str>] [-COVERAGE <str>]
-POLYGONS:<str> Polygons
Shapes, input
-FIELD:<str> Category
Table field
-METHOD:<str> Method
Choice
Available Choices:
[0] cell wise
[1] polygon wise
Default: 1
-MULTIPLE:<str> Multiple Polygons
Choice
Available Choices:
[0] minimum coverage
[1] maximum coverage
Default: 1
-CLASSES:<str> Classification
Table, output, optional
-TARGET_DEFINITION:<str> Target Grid System
Choice
Available Choices:
[0] user defined
[1] grid or grid system
Default: 0
-TARGET_USER_SIZE:<double> Cellsize
Floating point
Minimum: 0.000000
Default: 1.000000
-TARGET_USER_XMIN:<double> West
Floating point
Default: 0.000000
-TARGET_USER_XMAX:<double> East
Floating point
Default: 100.000000
-TARGET_USER_YMIN:<double> South
Floating point
Default: 0.000000
-TARGET_USER_YMAX:<double> North
Floating point
Default: 100.000000
-TARGET_USER_COLS:<num> Columns
Integer
Minimum: 1
Default: 100
-TARGET_USER_ROWS:<num> Rows
Integer
Minimum: 1
Default: 100
-TARGET_USER_FITS:<str> Fit
Choice
Available Choices:
[0] nodes
[1] cells
Default: 0
-TARGET_TEMPLATE:<str> Target System
Grid, input, optional, CMD
-CATEGORY:<str> Category
Grid, output
-COVERAGE:<str> Coverage
Grid, output, optional