Editing Features

#connect to GIS
from arcgis.gis import GIS
from IPython.display import display
gis = GIS("portal url", 'username', 'password')

#search for the feature layer named Ports along west coast
portal_item = gis.content.get('6a8766e14d3d41cfb8fc8d4d8974f16d')
portal_item

#access the item's feature layers
ports_layer = portal_item.layers[0]
ports_layer

<FeatureLayer url:"https://pythonapi.playground.esri.com/server/rest/services/Hosted/Ports_in_the_Western_US/FeatureServer/0">

#query all the features and display it on a map
ports_fset = ports_layer.query() #an empty query string will return all 
                                        #the features or the first 1000 which ever is smaller

ports_fset.sdf

ports_layer.properties.capabilities

'Query,Sync,Extract'

ports_features = ports_fset.features

# select San Francisco feature
sfo_feature = [f for f in ports_features if f.attributes['port_name']=='SAN FRANCISCO'][0]
sfo_feature.attributes

{'objectid': 1,
 'country': 'US',
 'globalid': '{14FB62C9-1CEA-4F12-ACA4-14BB72F042BF}',
 'harborsize': 'L',
 'label_position': 'SW',
 'latitude': 37.816667,
 'longitude': -122.416667,
 'port_name': 'SAN FRANCISCO',
 'short_form': 'SFFO',
 'geometry_x': -13627360,
 'geometry_y': 4553559,
 'globalid_1': '{9D3F40A8-C4C5-4C59-A82C-3C3B19373671}',
 'SHAPE': {'x': -13627361.035,
  'y': 4553559.283399999,
  'spatialReference': {'wkid': 102100, 'latestWkid': 3857}}}

sfo_edit = sfo_feature
sfo_edit.attributes['short_form'] = 'SFO'

display(sfo_edit)

{"geometry": {"x": -13627361.035, "y": 4553559.283399999, "spatialReference": {"wkid": 102100, "latestWkid": 3857}}, "attributes": {"objectid": 1, "country": "US", "globalid": "{14FB62C9-1CEA-4F12-ACA4-14BB72F042BF}", "harborsize": "L", "label_position": "SW", "latitude": 37.816667, "longitude": -122.416667, "port_name": "SAN FRANCISCO", "short_form": "SFO", "geometry_x": -13627360, "geometry_y": 4553559, "globalid_1": "{9D3F40A8-C4C5-4C59-A82C-3C3B19373671}", "SHAPE": {"x": -13627361.035, "y": 4553559.283399999, "spatialReference": {"wkid": 102100, "latestWkid": 3857}}}}

update_result = ports_flayer.edit_features(updates=[sfo_edit])
update_result

{'addResults': [],
 'updateResults': [{'objectId': 1,
   'globalId': '{9D3F40A8-C4C5-4C59-A82C-3C3B19373671}',
   'success': True}],
 'deleteResults': [],
 'attachments': {'addResults': [], 'updateResults': [], 'deleteResults': []}}

# construct a Feature object for Los Angeles.
la_dict = {"attributes": 
           {"latitude": 33.75,
            "longitude": -118.25,
            "country": "US",
            "harborsize": "L",
            "label_position": "SW",
            "port_name": "LOS ANGELES",
            "short_form": "LAX"}, 
           "geometry": 
           {"x": -13044788.958999995, "y": 3857756.351200014}}

add_result = ports_flayer.edit_features(adds = [la_dict])

add_result

{'addResults': [{'objectId': 23,
   'globalId': '{F5FCFF4C-ED2F-4C72-80EF-B414EF4C8C5B}',
   'success': True}],
 'updateResults': [],
 'deleteResults': [],
 'attachments': {'addResults': [], 'updateResults': [], 'deleteResults': []}}

# find object id for Redlands
Redlands_feature = [f for f in ports_features if f.attributes['port_name'] == 'REDLANDS'][0]
Redlands_objid = Redlands_feature.get_value('objectid')
Redlands_objid

22

type(Redlands_objid)

int

# pass the object id as a string to the delete parameter
delete_result = ports_flayer.edit_features(deletes=str(Redlands_objid))
delete_result

{'addResults': [],
 'updateResults': [],
 'deleteResults': [{'objectId': 22, 'globalId': None, 'success': True}],
 'attachments': {'addResults': [], 'updateResults': [], 'deleteResults': []}}

ports_fset_edited = ports_flayer.query()
ports_fset_edited.sdf