Latest Contributions by ZacharyHart

In this particular case I'm trying to use the arcgis.features.analysis module's join_features function using two feature layers I've applied queries to. I'm using Jupyter Labs to work on this and I've not included the outputs/responses which the code does return successfully and the queried layers appear as expected in the ipython display. from arcgis.gis import GIS from arcgis.features import FeatureLayer #Not needed here from IPython.display import display #Not needed here from arcgis import features gis = GIS("https://amazingportal.com/portal", "me", "m3LoG!!N") print("Logged in as: " + gis.properties.user.username) #Access feature layers cruiseFeatureLayer = gis.content.search('title: NortheastCruisePoints', 'Feature Layer') cruisePoints = cruiseFeatureLayer[0].layers[0] print("Item ID:{0}".format(cruiseFeatureLayer[0].id)) print("Input Layer:{0}".format(cruisePoints.properties.name)) cruisePoints clientsFeatureLayer = gis.content.search('title: NortheastClientsCollector', item_type='Feature Layer') clients = clientsFeatureLayer[0].layers[2] print("Item ID:{0}".format(clientsFeatureLayer[0].id)) print("Input Layer:{0}".format(clients.properties.name)) clients #Query based on ClientID clientQuery = clients.query(where="LVI_CODE ='7282'") cruiseQuery = cruisePoints.query(where="LVI_CODE ='7282'") print("{0} stands selected".format(len(clientQuery.features))) print("{0} cruise points selected".format(len(cruiseQuery.features))) #Review queried feature layers in ipython display [need to modify so queried layers are zoomed-to] queryMap = gis.map() queryMap.extent = clientsFeatureLayer[0].extent queryMap.add_layer(clientQuery) queryMap.add_layer(cruiseQuery) queryMap features.analysis.join_features(target_layer=clientQuery,join_layer=cruiseQuery, spatial_relationship='intersects')‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ Here is the error I get: Exception: Invalid format of input layer. url string, feature service Item, feature service instance or dict supported‍ So does the analysis module only work for feature layers, not feature sets? Is there a way to supply a queried/filtered input to the analysis w/o having to create an entirely new item in your portal? ... View more

Many of the solutions we have created for our organization have been released as Python based Geoprocessing Tools (sometimes rolled-up into widgets, other times simply a GP Service). Since we've implemented a (federated) Enterprise system, we've been exploring leveraging the Python API much more. As I see it, the primary difference here is that the GP services can access the underlying geodatabase infrastructure directly. Conversely, the Python API is designed to be web-based and would therefore access the data via feature services. I realize this is the Python API forum/group so this may need to be posted elsewhere to get a good discussion going. That said, what do you see as the advantages to using the Python API vs 'conventional' geoprocessing tools? Are there performance considerations? Ease of deployment? ... View more

I keep going in circles on this! Where is the information specific to 'definitionExpression' and 'layerDefinition? what exactly needs to be supplied when updating the JSON for a web map item? In the API reference I can find nothing about these for the update() method [and the examples given for update() appear to be identical to what's provided for save()]. All of the examples on these forums utilize both of these keys:values such as this thread here and here. Is there a section of the API reference I've missed? ... View more

There are several threads on here that have gotten me this far, but I've still not found any solid documentation about what needs to be supplied to the JSON dictionary in order to properly update it. Note: I can get this to work when there is only one layer in the feature layer/feature collection. I'm just stuck. Here is my code so far. """ #Import Modules import copy,json from arcgis.gis import GIS from arcgis.mapping import WebMap #Log into ArcGIS Enterprise gis = GIS("https://awesomeportalname.com/portal", "DougMcGrave", "a1ntL!FeGr@nd!") print("Logged in as: " + gis.properties.user.username) #Retrieve NortheastFieldData web map webMapSearch = gis.content.search("title: NortheastFieldData2",item_type = "Web Map") sourceWebMap= webMapSearch[0] #itemID = webMapTest.id #print(itemID) #Read the web map as a WebMap object webMapObject = WebMap(sourceWebMap) #Create a copy of the web map with a new title webmap_item_properties = {'title': 'TestCopyThis', 'snippet':'testcopydis', 'tags':'Test'} webMapObject.save(webmap_item_properties) #Retrieve new web map newWebMapSearch = gis.content.search("title: TestCopyThis",item_type = "Web Map") newWebMap = newWebMapSearch[0] for layer in newWebMap.layers: print(layer.title) #Extract JSON from webmap pubMapJson = newWebMap.get_data(try_json=True) jsonCopy = copy.deepcopy(pubMapJson) #Layers in web map which need filter applied layersList = ['NortheastCruisePoints','NortheastClientsCollector - NortheastPoints','NortheastClientsCollector - NortheastPoints','NortheastClientsCollector - NortheastLines','NortheastClientsCollector - NortheastStands','NortheastClientsCollector - Harvest Operations Status'] #Filter to be applied lyrFilter = "LVI_CODE = '{0}'".format("7532") #Extract JSON from webmap and create a copy pubMapJson = newWebMap.get_data(try_json=True) jsonCopy = copy.deepcopy(pubMapJson) #Loop through each layer for lyr in layersList: if 'layerDefinition' in lyr: print(lyr) jsonCopy['operationalLayers'][0]['layerDefinition']['definitionExpression']=lyrFilter #Update JSON newWebMap.update(item_properties={'text':json.dumps(jsonCopy)})‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ No errors are given and the JSON update returns 'True' ... View more