NumPyArrayToFeatureClass

概要

NumPy 構造化配列をポイント フィーチャクラスに変換します。

ディスカッション

入力配列のフィールド名が出力形式で無効である場合、整合チェックされます。 入力フィールド名のすべての無効な文字は、出力フィールド名では下線 (_) に置き換えられます。 フィールド名の制限は、使用されるデータベースによって異なります。

NumPyArrayToFeatureClass は、overwriteOutput 環境が True に設定されていても、既存のフィーチャクラスを上書きしません。

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.

構文

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

パラメーター	説明	データ タイプ
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. (デフォルト値は次のとおりです None)	SpatialReference

コードのサンプル

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)