Module Polygon Dissolve
Merges polygons, which share the same attribute value, and (optionally) dissolves borders between adjacent polygon parts. If no attribute or combination of attributes is chosen, all polygons will be merged.
Uses the free and open source software library Clipper created by Angus Johnson.
Clipper Homepage
Clipper at SourceForge
- Author: O.Conrad (c) 2008
- Specification: grid
- Menu: Shapes|Polygons
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Polygons | Shapes (input) | POLYGONS | - | - |
| Output | Dissolved Polygons | Shapes (output) | DISSOLVED | - | - |
| Options | 1. Attribute (*) | Table field | FIELD_1 | - | - |
| 2. Attribute (*) | Table field | FIELD_2 | - | - |
| 3. Attribute (*) | Table field | FIELD_3 | - | - |
| Keep Boundaries | Boolean | BND_KEEP | - | Default: 0 |
| Statistics | Table fields | STAT_FIELDS | - | - |
| Sum | Boolean | STAT_SUM | - | Default: 0 |
| Mean | Boolean | STAT_AVG | - | Default: 1 |
| Minimum | Boolean | STAT_MIN | - | Default: 0 |
| Maximum | Boolean | STAT_MAX | - | Default: 0 |
| Range | Boolean | STAT_RNG | - | Default: 0 |
| Deviation | Boolean | STAT_DEV | - | Default: 0 |
| Variance | Boolean | STAT_VAR | - | Default: 0 |
| Listing | Boolean | STAT_LST | - | Default: 0 |
| Count | Boolean | STAT_NUM | - | Default: 0 |
| Field Naming | Choice | STAT_NAMING | - | Available Choices:
[0] variable type + original name
[1] original name + variable type
[2] original name
[3] variable type
Default: 0 |
| (*) optional |
Command-line
Usage: saga_cmd shapes_polygons 5 -POLYGONS <str> [-FIELD_1 <str>] [-FIELD_2 <str>] [-FIELD_3 <str>] [-DISSOLVED <str>] [-BND_KEEP <str>] [-STAT_FIELDS <str>] [-STAT_SUM <str>] [-STAT_AVG <str>] [-STAT_MIN <str>] [-STAT_MAX <str>] [-STAT_RNG <str>] [-STAT_DEV <str>] [-STAT_VAR <str>] [-STAT_LST <str>] [-STAT_NUM <str>] [-STAT_NAMING <str>]
-POLYGONS:<str> Polygons
Shapes (input)
-FIELD_1:<str> 1. Attribute
Table field
-FIELD_2:<str> 2. Attribute
Table field
-FIELD_3:<str> 3. Attribute
Table field
-DISSOLVED:<str> Dissolved Polygons
Shapes (output)
-BND_KEEP:<str> Keep Boundaries
Boolean
Default: 0
-STAT_FIELDS:<str> Statistics
Table fields
-STAT_SUM:<str> Sum
Boolean
Default: 0
-STAT_AVG:<str> Mean
Boolean
Default: 1
-STAT_MIN:<str> Minimum
Boolean
Default: 0
-STAT_MAX:<str> Maximum
Boolean
Default: 0
-STAT_RNG:<str> Range
Boolean
Default: 0
-STAT_DEV:<str> Deviation
Boolean
Default: 0
-STAT_VAR:<str> Variance
Boolean
Default: 0
-STAT_LST:<str> Listing
Boolean
Default: 0
-STAT_NUM:<str> Count
Boolean
Default: 0
-STAT_NAMING:<str> Field Naming
Choice
Available Choices:
[0] variable type + original name
[1] original name + variable type
[2] original name
[3] variable type
Default: 0