Skip To Content

VectorFieldRenderer

Zusammenfassung

Visualize flow direction and magnitude information in your raster with vector symbols.

Auswertung

For more information about how this function works, see the Vector Renderer Field raster function.

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})
ParameterErklärungDatentyp
raster

The input raster.

Raster
is_uv_components

Specifies whether the input components represent U-V, or magnitude and direction.

  • TrueThe input data represents U-V components.
  • FalseThe 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.

  • 1Direction is measured in arithmetic coordinates. 0° points due east, and 90° points due north.
  • 2Direction 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.

  • 0From—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.
  • 1To—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,...]

Specify the thinning method to be used to calculate the magnitude and direction value of a tile.

  • Vector AverageThe 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 neighborUses the value from the pixels closest to the center of the tile.
  • BilinearBilinear resampling will be performed on the tile.
  • CubicCubic convolution resampling will be performed on the tile.
  • MinimumThe minimum pixel value of the tile.
  • MaximumThe maximum pixel value of the tile.

(Der Standardwert ist Vector Average)

String
symbology_name
[symbology_name,...]

Name of the symbol depicting direction and magnitude.

  • Single ArrowA single arrow depicting direction and magnitude.
  • Wind BarbWind barbs indicating wind direction and magnitude.
  • Ocean CurrentOcean current symbol indicating current and magnitude.

(Der Standardwert ist Single Arrow)

String
Rückgabewert
DatentypErklärung
Raster

The output raster displayed according to your rendering parameters.

Codebeispiel

VectorFieldRenderer example

Visualize flow direction and magnitude information in your raster with vector symbols.

import arcpy

Stretch_raster = arcpy.ia.Stretch(imagePath1, "PercentClip", None, None, None, None, True, 0.25, 0.75, None, None, None)