Zusammenfassung
Visualizes flow direction and magnitude information in a raster with vector symbols.
Diskussion
The referenced raster dataset for the raster object is temporary. To make it permanent, you can call the raster object's save method.
Syntax
VectorFieldRenderer (raster, {is_uv_components}, {reference_system}, {mass_flow_angle_representation}, {calculation_method}, {symbology_name})
Parameter | Erläuterung | Datentyp |
raster | The input raster. | Raster |
is_uv_components | Specifies whether the input components represent U-V, or magnitude and direction. - True—The input data represents U-V components.
- False—The input data represents magnitude and direction components. This is the default.
(Der Standardwert ist None) | Boolean |
reference_system | Specifies how the direction component is measured. - 1—Direction is measured in arithmetic coordinates. 0° points due east, and 90° points due north.
- 2—Direction is measured in geographic coordinates. 0° points due north, and 90° points due east.
(Der Standardwert ist 2) | Integer |
mass_flow_angle_representation | Specifies the angle of mass flow. - 0—From—The mass is flowing along the angle and moving toward the origin of the reference system. This is sometimes referred to as the meteorological convention.
- 1—To—The mass is flowing along the angle and moving away from the origin of the reference system. This is sometimes referred to as the oceanographic convention.
(Der Standardwert ist From) | Integer |
calculation_method [calculation_method,...] | Specifies the thinning method to be used to calculate the magnitude and direction value of a tile. - Vector Average—The following calculation occurs for each pixel: convert direction and magnitude to U and V components, calculate the averages of U and V for all pixels in a tile, and then convert the average U and average V back to direction and magnitude.
- Nearest neighbor—Uses the value from the pixels closest to the center of the tile.
- Bilinear—Bilinear resampling will be performed on the tile.
- Cubic—Cubic convolution resampling will be performed on the tile.
- Minimum—The minimum pixel value of the tile.
- Maximum—The maximum pixel value of the tile.
(Der Standardwert ist Vector Average) | String |
symbology_name [symbology_name,...] | Specifies the name of the symbol depicting direction and magnitude. - Single Arrow—A single arrow depicting direction and magnitude.
- Wind Barb—Wind barbs indicating wind direction and magnitude.
- Ocean Current—Ocean current symbol indicating current and magnitude.
(Der Standardwert ist Single Arrow) | String |
RückgabewertDatentyp | Erläuterung |
Raster | The output raster displayed according to your rendering parameters. |
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