NumPyArrayToFeatureClass

Zusammenfassung

Konvertiert ein strukturiertes NumPy-Array in eine Point-Feature-Class.

Diskussion

If a field name from the input array is invalid for the output format, it will be validated. All invalid characters in the input field name are replaced with an underscore (_) in the output field name. Field name restrictions depend on the specific database used.

NumPyArrayToFeatureClass überschreibt eine vorhandene Feature-Class nicht, auch wenn der Umgebungsparameter overwriteOutput auf "true" festgelegt ist.

NumPy is a fundamental package for scientific computing in Python, including support for a powerful N-dimensional array object. For more information, see Working with NumPy in ArcGIS.

Syntax

NumPyArrayToFeatureClass (in_array, out_table, shape_fields, {spatial_reference})

Parameter	Erläuterung	Datentyp
in_array	A NumPy structured array. The array must include field names and NumPy dtypes.	NumPyArray
out_table	The output point feature class to which the records from the NumPy array will be written.	String
shape_fields [shape_fields,...]	A list (or tuple) of field names used to create the feature class' geometry. Coordinates are specified in the order of x, y, z, and m. z-coordinate and m-value fields are optional. Assuming field names of x, y, z, and m in a numpy array, feature classes could be constructed as below. import arcpy # Create a feature class with x,y fields arcpy.da.NumPyArrayToFeatureClass(array, fc, ("x", "y")) # Create a feature class with x,y,z fields arcpy.da.NumPyArrayToFeatureClass(array, fc, ("x", "y", "z")) # Create a feature class with x,y,m fields arcpy.da.NumPyArrayToFeatureClass(array, fc, ("x", "y", "", "m")) # Create a feature class with x,y,z,m fields arcpy.da.NumPyArrayToFeatureClass(array, fc, ("x", "y", "z", "m"))	String
spatial_reference	The spatial reference of the feature class. When this argument is specified, the feature will be projected (or transformed) from the input's spatial reference. If unspecified, the input feature classes' spatial reference will be used. Valid values for this argument are a SpatialReference object or string equivalent. (Der Standardwert ist None)	SpatialReference

Codebeispiel

import arcpy
import numpy

outFC = "C:/data/texas.gdb/fd/pointlocations"

# Create a numpy array with an id field, and a field with a tuple 
#  of x,y coordinates
#
array = numpy.array([(1, (471316.3835861763, 5000448.782036674)),
                     (2, (470402.49348005146, 5000049.216449278))],
                    numpy.dtype([('idfield',numpy.int32),('XY', '<f8', 2)]))

# Define a spatial reference for the output feature class
#
SR = arcpy.Describe("C:/data/texas.gdb/fd").spatialReference

# Export the numpy array to a feature class using the XY field to
#  represent the output point feature
#
arcpy.da.NumPyArrayToFeatureClass(array, outFC, ['XY'], SR)