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 (optional input) | TARGET_TEMPLATE | use this grid's system for output grids | - | |
| Output | Classification (*) | Table (optional output) | CLASSES | Classification look-up table for interpretation of resulting grid cell values. | - |
| Category | Grid (output) | CATEGORY | - | - | |
| Coverage (*) | Grid (optional output) | 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 | |
| Left | Floating point | TARGET_USER_XMIN | - | Default: 0.000000 | |
| Right | Floating point | TARGET_USER_XMAX | - | Default: 100.000000 | |
| Bottom | Floating point | TARGET_USER_YMIN | - | Default: 0.000000 | |
| Top | Floating point | TARGET_USER_YMAX | - | Default: 100.000000 | |
| 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_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 (optional output) -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> Left Floating point Default: 0.000000 -TARGET_USER_XMAX:<double> Right Floating point Default: 100.000000 -TARGET_USER_YMIN:<double> Bottom Floating point Default: 0.000000 -TARGET_USER_YMAX:<double> Top Floating point Default: 100.000000 -TARGET_USER_FITS:<str> Fit Choice Available Choices: [0] nodes [1] cells Default: 0 -TARGET_TEMPLATE:<str> Target System Grid (optional input) -CATEGORY:<str> Category Grid (output) -COVERAGE:<str> Coverage Grid (optional output)