topic Re: GeoJSON URL Query in ArcGIS REST APIs and Services Questions

GeoJSON URL Query

JoshBillings — Tue, 31 May 2022 16:31:30 GMT

Hey all,

I need a GeoJSON URL of this layer with a query for the boundary of Winston-Salem only.

There is a GeoJSON URL for the entire feature service available (under API resources on the right) but I'm unsure as to how to use the "query?outFields=" in the URL to bring back Winston-Salem specifically.

Can anyone help?

Thanks!

Re: GeoJSON URL Query

JoshuaBixby — Tue, 31 May 2022 16:48:03 GMT

If you look at the REST API page for the Corporate Limits layer (ID:0) (Layer: Corporate Limits (ID:0) (arcgis.com)), you will see MUNICIPALITY uses coded values. For Winston-Salem, that would be 'WS'. So you want a where clause of:

MUNICIPALITY='WS'

Re: GeoJSON URL Query

JoshBillings — Tue, 31 May 2022 17:00:16 GMT

Thanks Josh. I tried the URL below but it didn't work. I'm sure the formatting after "where=" is wrong. What can I do to correct it?

https://services1.arcgis.com/5Yf8nIJWE7cxpd3N/arcgis/rest/services/Corporate_Limits_Hosted/FeatureServer/0/query?outFields=*&where=MUNICIPALITY='WS'&f=geojson

Re: GeoJSON URL Query

JoshuaBixby — Tue, 31 May 2022 17:34:29 GMT

Can you elaborate on "didn't work?" I just clicked on the hyperlink, and it opened a window with results I would expect.

Re: GeoJSON URL Query

JoshBillings — Tue, 31 May 2022 17:48:50 GMT

I was testing the link by adding it to a web map. Got a message that said "unable to display filter" but I think it's because it's a GeoJSON URL. The feature showed up fine in the map. I think it's working fine, that just confused me. Thank you for your help!