topic Listening to map extent change in ArcGIS API for Python Questions

Listening to map extent change

MaherAbdel_Karim — Wed, 30 May 2018 21:31:04 GMT

HI,
I am working with the API to perform analytics based on map extent, I was looking around the documentation to find how we can listen to map (basemap) extent change so I can issue a callback request.
can you help please on this.

The scenario is the following:
MapView show the basemap -> user change the map extent -> listen to change -> query database based on the new extent -> display the return geometry on top of the map as a new layer

Regards
Maher

Re: Listening to map extent change

FC_Basson — Thu, 31 May 2018 09:58:43 GMT

You can use the watchUtils to listen for extent changes. See this demo: Watch for changes | ArcGIS API for JavaScript 4.7

Re: Listening to map extent change

MaherAbdel_Karim — Thu, 31 May 2018 16:24:02 GMT

Thank you for your comment.

I am using ArcGIS python API not javascript!

Regards

Maher