Latest Contributions by Egge-Jan_Pollé

Define Area of Interest on Hosted Feature Layer View using ArcGIS API for Python Let's say you are responsible for a Hosted Feature Layer with data for the whole country and you want to share these data with regional teams in such a way that they are able to see only records in their own region. For many practical reasons you don't want to divide your data over multiple Hosted Feature Layers. You want to create regional views on the data instead. You can draw these regions manually, following the procedure on this page: https://doc.arcgis.com/en/arcgis-online/manage-data/set-view-definition.htm But hey, you know your regions, and you don't want to draw them by hand. Instead you want to use existing geometry and create the views automatically. In the example below we use data from the Netherlands. We have a data set with police stations ('Politiebureaus') and one with provinces ('Provincies (Bestuurlijke Grenzen 2019)')  - with the ArcGIS Online Assistant we have copied these data sets to our own environment. See the script below how we create twelve views - one for each province - showing only the police stations within the provincial boundaries Hope this helps! P.S. for another example - setting a view definition - you might have a look at this blog https://community.esri.com/groups/arcgis-python-api/blog/2019/02/11/using-the-arcgis-api-for-python-to-create-a-view-from-a-hosted-feature-layer-and-to-define-a-view-fefinition by Earl Medina. ## ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ## Script: agol_define_areas_of_interest_on_hosted_feature_layer_views.py ## Goal: to define an area of interest on multiple hosted feature layer views using input geometry ## Author: Egge-Jan Polle - Tensing GIS Consultancy ## Date: March 27, 2019 ## ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ # # This script should be run within a specific ArcGIS/Python environment using the batch file below # (This batch file comes with the installation of ArcGIS Pro) # "C:\Program Files\ArcGIS\Pro\bin\Python\scripts\propy.bat" agol_define_areas_of_interest_on_hosted_feature_layer_views.py from arcgis.gis import GIS from arcgis.features import FeatureLayerCollection from provide_credentials import provide_credentials username, password = provide_credentials() my_agol = GIS("https://www.arcgis.com", username, password) # The Hosted Feature Layer containing a countrywide dataset police_stations = my_agol.content.get('<itemID>') police_stations_flc = FeatureLayerCollection.fromitem(police_stations) # The Hosted Feature Layer containing the regional division provinces = my_agol.content.get('<itemID>').layers[0].query() # Get the Spatial Reference spat_ref = provinces.spatial_reference # Loop through the regional division to create the views for index, province in enumerate(provinces): prov_name = provinces.features[index].attributes['Provincienaam'].upper().replace('-','_') print(prov_name) view_name = police_stations.name + "_" + prov_name + "_View" print(view_name) # Get the geometry for the regions view_geom = provinces.features[index].geometry.get('rings') new_view = police_stations_flc.manager.create_view(name=view_name) # Search for newly created View view_search = my_agol.content.search(view_name)[0] view_flc = FeatureLayerCollection.fromitem(view_search) service_layer = view_flc.layers[0] # Populate the update_dict with the geometry and the spatial reference update_dict = {"viewLayerDefinition":{"filter": {"operator":"esriSpatialRelContains","value": {"geometryType":"esriGeometryPolygon","geometry": {"rings": view_geom, "spatialReference":spat_ref}}}}} # Update the definition to include the Area of Interest service_layer.manager.update_definition(update_dict) print('Done!')‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ ... View more