Resumen
Visualizes flow direction and magnitude information in a raster with vector symbols.
Debate
For more information about how this function works, see the Vector 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.
Sintaxis
VectorField (raster_u_mag, raster_v_dir, {input_data_type}, {angle_reference_system}, {output_data_type})
Parámetro | Explicación | Tipo de datos |
raster_u_mag |
The first input raster, which is either the U value or the magnitude. | Raster |
raster_v_dir | The second input raster, which is either the V value or the direction. | Raster |
input_data_type | The type of vector field your inputs represent.
(El valor predeterminado es Vector-UV) | String |
angle_reference_system | Specifies how the direction component was measured.
(El valor predeterminado es Geographic) | String |
output_data_type | Specifies the type of vector field your output will represent.
(El valor predeterminado es Vector-UV) | String |
Tipo de datos | Explicación |
Raster | The output raster. |
Muestra de código
This example creates a vector field for a multidimensional dataset.
from arcpy.sa import *
out_vectorfield_raster = VectorField("magnitude", "direction", "Vector-MagDir",
None, "Vector-UV)
out_vectorfield_raster.save("C:/arcpyExamples/outputs/vector_field_UV.crf")
This example creates a vector field for a multidimensional dataset.
# Import system modules
import arcpy
from arcpy.sa import *
# Set the analysis environments
arcpy.env.workspace = "C:/arcpyExamples/data"
# Set the local variables
# create a multidimensional raster object from hycom.nc that
# contains 2 variables water_u and water_v
hycom_raster = arcpy.Raster("C:/data/hycom.nc", True)
# choose the 2 variables from hycom_raster as 2 multidimensional raster
in_raster_u_mag = Subset(hycom_raster, variables = "water_u")
in_raster_v_dir = Subset(hycom_raster, variables = "water_v")
# Execute VectorField function
out_vectorField_raster = VectorField(in_raster_u_mag, in_raster_v_dir,
"Vector-UV", "Geographic", "Vector-MagDir")
# Save the output
out_vectorField_raster.save("C:/arcpyExamples/vector_field_magdir.crf")