topic Re: Fetch wich layers in a map service are used in a web map in ArcGIS API for Python Questions

Fetch wich layers in a map service are used in a web map

ÅsaBlomberg — Fri, 29 Sep 2023 12:58:06 GMT

I want to fetch all layers that a Web map uses from a Map service.

If I have a Web map with a Map service - the Map service contains 10 layers but only 5 of them are used in the Web map. How do I fetch these in the API?

Here is my code for fetching the Web map, but it only gets the Map services, nothing about wich layers in the Map service that are used:

from arcgis.gis import GIS from arcgis.mapping import WebMap, WebScene gis = GIS(url="https://geoportal.website.se/portal/", username="*****", password="****") web_maps = gis.content.search(query="", item_type="Web Map", max_items = 5) for map in web_maps: maptitle = map['title'] mapid = map['id'] web_map = WebMap(gis.content.get(map.id)) layers = web_map.layers for layer in layers: layerType = layer.layerType url = layer.url itemId = layer.itemId

Re: Fetch wich layers in a map service are used in a web map

EarlMedina — Fri, 29 Sep 2023 13:36:12 GMT

To get that information, you can take a look at the item data.

Example:

from arcgis import GIS import json conn = GIS("https://machine.domain.com/portal", "admin", "password") item = conn.content.get(<itemID>) item_data = item.get_data() # Include the below line for prettified JSON print(json.dumps(item_data, indent=4, sort_keys=True))

In your case, the information you're looking for will be in:

item_data["operationalLayers"]

Re: Fetch wich layers in a map service are used in a web map

MichaelVolz — Sat, 30 Sep 2023 14:45:58 GMT

If you need to perform this action on a large number of web maps and possibly web apps, I would suggest looking at GeoJobe Admin tools as I think they are a great investment and are designed to perform tasks like this without having to do your own code development.