AsShape

Résumé

Converts Esri JSON or GeoJSON geometry to ArcPy geometry, and Esri JSON feature sets to ArcPy feature sets. GeoJSON is a geospatial data interchange format for encoding geographic data structures.

Discussion

The spatial reference of a geometry object created from GeoJSON will be WGS 1984.

Syntaxe

AsShape (geojson_struct, {esri_json})

Paramètre	Explication	Type de données
geojson_struct	The geojson_struct includes type and coordinates. The following strings are included for type: Point, LineString, Polygon, MultiPoint, and MultiLineString.	Dictionary
esri_json	Specifies whether the input JSON is evaluated as Esri JSON or GeoJSON. If True, the input is evaluated as Esri JSON. (La valeur par défaut est False)	Boolean

Valeur renvoyée

Type de données

Explication

Geometry

AsShape returns a geometry object (PointGeometry, Multipoint, Polyline, or Polygon) based on the input GeoJSON or Esri JSON object. import arcpy geojson_point = {"type": "Point", "coordinates": [5.0, 5.0]} point = arcpy.AsShape(geojson_point) If the Esri JSON is a feature set, AsShape will return a FeatureSet. The ArcGIS REST API specification defines feature set as a collection of features with a specific geometry type, fields, and a spatial reference. The JSON to Features tool can be used to convert Esri JSON directly into a feature class.

Exemple de code

AsShape example 1

Create a PointGeometry object using a GeoJSON object.

import arcpy

geojson_point = {
    "type": "Point", 
    "coordinates": [5.0, 5.0]}
point = arcpy.AsShape(geojson_point)

AsShape example 2

Create a PointGeometry object using an Esri JSON object.

import arcpy

esri_json = {
    "x": -122.65,
    "y": 45.53,
    "spatialReference": {
        "wkid": 4326}}
# Set the second parameter to True to use an esri JSON
point = arcpy.AsShape(esri_json, True)

AsShape example 3

Create a Multipoint object using a GeoJSON object.

import arcpy

geojson_multipoint = {
    "type": "MultiPoint",
    "coordinates": [[5.0, 4.0], [8.0, 7.0]]}
multipoint = arcpy.AsShape(geojson_multipoint)

AsShape example 4

Create a Multipoint object using an Esri JSON object.

import arcpy

esri_json = {
    "points" : [
        [-97.06138, 32.837],
        [-97.06133, 32.836],
        [-97.06124, 32.834],
        [-97.06127, 32.832]],
    "spatialReference" : {"wkid" : 4326}}
# Set the second parameter to True to use an esri JSON
multipoint = arcpy.AsShape(esri_json, True)

AsShape example 5

Create a Polyline object using a GeoJSON object.

import arcpy

geojson_linestring = {
    "type": "LineString",
    "coordinates": [[5.0, 4.0], [8.0, 7.0]]}
polyline = arcpy.AsShape(geojson_linestring)

AsShape example 6

Create a Polyline object using an Esri JSON object.

import arcpy

esri_json = {
    "paths" : [
        [[-97.08, 32.8], [-97.05, 32.6], [-97.06, 32.7],
         [-97.07, 32.6]],
        [[-97.4, 32.5], [-97.2, 32.75]]],
    "spatialReference" : {"wkid" : 4326}}
# Set the second parameter to True to use an esri JSON
polyline = arcpy.AsShape(esri_json, True)

AsShape example 7

Create a multipart Polyline object using a GeoJSON object.

import arcpy

geojson_multilinestring = {
    "type": "MultiLineString",
    "coordinates": [
        [[5.0, 4.0], [8.0, 7.0]],
        [[4.0, 5.0], [7.0, 8.0]]]}
polyline = arcpy.AsShape(geojson_multilinestring)

AsShape example 8

Create a Polygon object using a GeoJSON object.

import arcpy

geojson_polygon = {
    "type": "Polygon",
    "coordinates": [
        [[10.0, 0.0], [20.0, 0.0], [20.0, 10.0], [10.0, 10.0],
         [10.0, 0.0]]]}
polygon = arcpy.AsShape(geojson_polygon)

AsShape example 9

Create a Polygon with a hole object using a GeoJSON object.

import arcpy

geojson_polygon = {
    "type": "Polygon",
    "coordinates": [
        [[10.0, 0.0], [20.0, 0.0], [20.0, 10.0], [10.0, 10.0],
         [10.0, 0.0]],
        [[12.0, 2.0], [18.0, 2.0], [18.0,  8.0], [12.0,  8.0],
         [12.0, 2.0]]]}
polygon = arcpy.AsShape(geojson_polygon)