FeatureSet

Résumé

FeatureSet objects are a lightweight representation of a feature class. They are a special data element that contains not only schema, but also the data. The FeatureSet object is also how feature data is sent and received from the server.

Discussion

Remarque :

If loading a feature class into a new FeatureSet and modifying the FeatureSet with a geoprocessing tool that modifies the input like Calculate Field or an arcpy function like UpdateCursor, the original feature class will also be modified.

Syntaxe

 FeatureSet  ({table})

Paramètre	Explication	Type de données
table	Feature data to be loaded into the FeatureSet object.	String

Propriétés

Propriété	Explication	Type de données
JSON (Lecture seule)	Returns an Esri JSON representation of the geometry as a string. Astuce: The returned string can be converted to a dictionary using the Python json.loads function.	String

Vue d'ensemble des méthodes

Méthode	Explication
load (table_path)	Import from a table.
save (table_path)	Export to a table.

Méthodes

load (table_path)

Paramètre	Explication	Type de données
table_path	The table to be imported.	String

save (table_path)

Paramètre	Explication	Type de données
table_path	The output table to be created.	String

Exemple de code

FeatureSet example

Load data into a FeatureSet and insert into feature class.

import arcpy

arcpy.env.overwriteOutput = True

arcpy.ImportToolbox("http://flame7/arcgis/services;BufferByVal",
                    "servertools")

# List of coordinates
coordinates = [[-117.196717216, 34.046944853],
               [-117.186226483, 34.046498438],
               [-117.179530271, 34.038016569],
               [-117.187454122, 34.039132605],
               [-117.177744614, 34.056765964],
               [-117.156205131, 34.064466609],
               [-117.145491191, 34.068261129],
               [-117.170825195, 34.073618099],
               [-117.186784501, 34.068149525],
               [-117.158325598, 34.03489167]]

# Create an in_memory feature class to initially contain the coordinate pairs
feature_class = arcpy.CreateFeatureclass_management(
    "in_memory", "tempfc", "POINT")[0]

# Open an insert cursor
with arcpy.da.InsertCursor(feature_class, ["SHAPE@XY"]) as cursor:
    # Iterate through list of coordinates and add to cursor
    for (x, y) in coordinates:
        cursor.insertRow([(x, y)])

# Create a FeatureSet object and load in_memory feature class
feature_set = arcpy.FeatureSet()
feature_set.load(feature_class)

results = arcpy.BufferPoints_servertools(feature_set)