Tool Kernel Density Estimation
Kernel density estimation. If any point is currently in selection only selected points are taken into account.
References
- Fotheringham, A.S., Brunsdon, C., Charlton, M. (2000): Quantitative Geography. Sage. 270p.
- Lloyd, C.D. (2010): Spatial data analysis - An introduction for GIS users. Oxford. 206p.
- Author: O.Conrad (c) 2010
- Menu: Grid|Gridding
Parameters
| Name | Type | Identifier | Description | Constraints |
Input | Points | Shapes, input | POINTS | - | - |
Target System (*) | Grid, input, optional, CMD | TARGET_TEMPLATE | use this grid's system for output grids | - |
Output | Target Grid | Grid, output | TARGET_OUT_GRID | - | - |
Options | Population (*) | Table field | POPULATION | - | - |
Radius | Floating point | RADIUS | - | Minimum: 0.000000 Default: 1.000000 |
Kernel | Choice | KERNEL | - | Available Choices: [0] quartic kernel [1] gaussian kernel Default: 0 |
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 6 [-POINTS <str>] [-POPULATION <str>] [-RADIUS <double>] [-KERNEL <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>] [-TARGET_OUT_GRID <str>]
-POINTS:<str> Points
Shapes, input
-POPULATION:<str> Population
Table field
-RADIUS:<double> Radius
Floating point
Minimum: 0.000000
Default: 1.000000
-KERNEL:<str> Kernel
Choice
Available Choices:
[0] quartic kernel
[1] gaussian kernel
Default: 0
-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
-TARGET_OUT_GRID:<str> Target Grid
Grid, output