topic Re: WebMap object move_to_basemap() method will not move the layer to the basemap in ArcGIS API for Python Questions

WebMap object move_to_basemap() method will not move the layer to the basemap

Clubdebambos — Wed, 20 Dec 2023 16:38:55 GMT

ArcGIS API for Python version 2.2.0.1

I have used the move_from_basemap() to move basemap to a layer.

from arcgis.gis import GIS from arcgis.mapping import WebMap ## Access AGOL agol = GIS("home") ## get webmap item wm_item = agol.content.get("WM_ITEM_ID") ## create WebMap object webmap = WebMap(wm_item) ## get basemap definition basemap_lyr = webmap.definition["baseMap"]["baseMapLayers"][0] ## call move_from_basemap webmap.move_from_basemap(basemap_lyr) ## update basemap webmap.update()

This works perfectly! Now going in the other direction with move_to_basemap()

from arcgis.gis import GIS from arcgis.mapping import WebMap ## Access AGOL agol = GIS("home") ## get webmap item wm_item = agol.content.get("WM_ITEM_ID") ## create WebMap object webmap = WebMap(wm_item) ## get layer definition basemap_lyr = [lyr for lyr in webmap.layers if lyr.title == "Dark Gray Base"][0] ## move to basemap webmap.move_to_basemap(basemap_lyr) ## update webmap webmap.update()

I am returned this error..

arcgis.gis.Error: This layer type cannot be added as a basemap. See method description to know what layer types can be moved to basemap.

The layer is a VectorTileLayer and as per documentation should work!! I mean, its a layer that I switched from the basemap in the first place.

{ "id": "dark-gray-base-layer", "opacity": 1, "title": "Dark Gray Base", "visibility": true, "layerType": "VectorTileLayer", "styleUrl": "https://www.arcgis.com/sharing/rest/content/items/5e9b3685f4c24d8781073dd928ebda50/resources/styles/root.json" }

Re: WebMap object move_to_basemap() method will not move the layer to the basemap

EarlMedina — Wed, 20 Dec 2023 22:05:33 GMT

I think this one can be logged as a bug. The reference list is:

layer_types = [ "ArcGISTiledMapServiceLayer", "ArcGISImageServiceLayer", "ArcGISImageServiceVectorLayer", "ArcGISMapServiceLayer", "ArcGISTiledImageServiceLayer", "ArcGISVectorTileLayer", ]

But the layerType attribute is set to "VectorTileLayer." From a quick glance at the source, it looks like "ArcGISVectorTileLayer" is only defined in arcgis/mapping/_types.py so I think the types are either incorrect or the logic needs to be updated to properly map to the types.

Re: WebMap object move_to_basemap() method will not move the layer to the basemap

Clubdebambos — Thu, 21 Dec 2023 09:24:59 GMT

Thanks @EarlMedina

Have you got a link to the process for reporting as a bug?

Re: WebMap object move_to_basemap() method will not move the layer to the basemap

Clubdebambos — Thu, 21 Dec 2023 10:02:40 GMT

Here's a workaround for now...

from arcgis.gis import GIS from arcgis.mapping import WebMap ## Access AGOL agol = GIS("home") ## WebMap Item ID wm_item_id = "WM_ITEM_ID" ## get the webmap item as an item object wm_item = agol.content.get(wm_item_id) ## create a WebMap object from webmap item webmap = WebMap(wm_item) ## Get the layer of interest basemap_lyr = [lyr for lyr in webmap.layers if lyr.title == "Dark Gray Base"][0] ## Convert lyr definition to a dictionary basemap_lyr_dict = dict(basemap_lyr) ## Remove the basemap layer from the Map webmap.remove_layer(basemap_lyr) ## This needs to be called to make the remove layer stick status = webmap.update() print(status) ## Re-get the updated webmap item wm_item = agol.content.get(wm_item_id) ## Get the webmap item data item_data = wm_item.get_data() ## Update the Basemap list with the dictionary item_data["baseMap"]["baseMapLayers"].append(basemap_lyr_dict) ## Define the webmap item properties wm_item_properties = {"text":item_data} ## Update the webmap item properties wm_item.update(item_properties=wm_item_properties)

Re: WebMap object move_to_basemap() method will not move the layer to the basemap

NicholasGiner1 — Fri, 29 Dec 2023 16:18:56 GMT

Hello, thanks for sharing your question. You can report bugs and make enhancement requests to the Python API public GitHub repo here: https://github.com/Esri/arcgis-python-api/issues

thanks,

Nick Giner - Product Manager

Re: WebMap object move_to_basemap() method will not move the layer to the basemap

Clubdebambos — Sat, 13 Jan 2024 08:48:43 GMT

Reported as bug here: https://github.com/Esri/arcgis-python-api/issues/1739