Contour Lines from Grid
- Author: O.Conrad (c) 2001
- Menu: Shapes | Shapes-Grid Tools | Vectorization
Description
Derive contour lines (isolines) from a grid.
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Grid | grid, input | GRID | - | - |
| Output | Contour | shapes, output | CONTOUR | - | - |
| Polygons | shapes, output, optional | POLYGONS | - | - |
| Options | Grid system | grid system | GRID_GRIDSYSTEM | - | - |
| Vertex Type | choice | VERTEX | - | Available Choices:
[0] x, y
[1] x, y, z
Default: 0 |
| Parallel Processing | boolean | LINE_OMP | - | Default: 1 |
| Split Line Parts | boolean | LINE_PARTS | - | Default: 1 |
| Parallel Processing | boolean | POLY_OMP | - | Default: 1 |
| Split Polygon Parts | boolean | POLY_PARTS | - | Default: 1 |
| Interpolation Scale | floating point number | SCALE | set greater one for line smoothing | Minimum: 0.000000
Default: 1.000000 |
| Boundary Extension | boolean | BOUNDARY | Extend contours beyond boundary. Internally input grid is extrapolated by one cell size in each direction (top, down, left, right). | Default: 0 |
| Minimum Length | floating point number | MINLENGTH | Contour line segments with minimum length [map units] or less will be removed from resulting data set. | Minimum: 0.000000
Default: 0.000000 |
| Interval Definition | choice | INTERVALS | - | Available Choices:
[0] single value
[1] equal intervals
[2] from list
Default: 1 |
| Base Contour Value | floating point number | ZMIN | - | Default: 0.000000 |
| Maximum Contour Value | floating point number | ZMAX | - | Default: 1000.000000 |
| Contour Interval | floating point number | ZSTEP | - | Minimum: 0.000000
Default: 100.000000 |
| Contour Values | text | ZLIST | List of comma separated values. | Default: 0, 10, 20, 50, 100, 200, 500, 1000 |
Command Line
Usage: saga_cmd shapes_grid 5 [-GRID ] [-CONTOUR ] [-VERTEX ] [-LINE_OMP ] [-LINE_PARTS ] [-POLYGONS ] [-POLY_OMP ] [-POLY_PARTS ] [-SCALE ] [-BOUNDARY ] [-MINLENGTH ] [-INTERVALS ] [-ZMIN ] [-ZMAX ] [-ZSTEP ] [-ZLIST ]
-GRID: Grid
grid, input
-CONTOUR: Contour
shapes, output
-VERTEX: Vertex Type
choice
Available Choices:
[0] x, y
[1] x, y, z
Default: 0
-LINE_OMP: Parallel Processing
boolean
Default: 1
-LINE_PARTS: Split Line Parts
boolean
Default: 1
-POLYGONS: Polygons
shapes, output, optional
-POLY_OMP: Parallel Processing
boolean
Default: 1
-POLY_PARTS: Split Polygon Parts
boolean
Default: 1
-SCALE: Interpolation Scale
floating point number
Minimum: 0.000000
Default: 1.000000
-BOUNDARY: Boundary Extension
boolean
Default: 0
-MINLENGTH: Minimum Length
floating point number
Minimum: 0.000000
Default: 0.000000
-INTERVALS: Interval Definition
choice
Available Choices:
[0] single value
[1] equal intervals
[2] from list
Default: 1
-ZMIN: Base Contour Value
floating point number
Default: 0.000000
-ZMAX: Maximum Contour Value
floating point number
Default: 1000.000000
-ZSTEP: Contour Interval
floating point number
Minimum: 0.000000
Default: 100.000000
-ZLIST: Contour Values
text
Default: 0, 10, 20, 50, 100, 200, 500, 1000