topic Re: ArcGIS API Viewshed with specific coordinates in ArcGIS JavaScript Maps SDK Questions

ArcGIS API Viewshed with specific coordinates

MatthiasRedl — Mon, 04 Jan 2021 13:35:14 GMT

Hello everyone,

I came across the ArcGIS viewshed sandbox today.

https://developers.arcgis.com/javascript/latest/sample-code/sandbox/index.html?sample=geoprocessing-viewshed

So I wanted to perform a viewshed analysis from specific coordinates (47.42120626,10.98630681), as you can do it with ArcGIS Pro/Online. The problem is, I don't know at which part of the script I can implement my own coordinates or how I need to change the script in order to start the analysis from that point.

It would be much appreciated if anyone could help me out here 🙂

Re: ArcGIS API Viewshed with specific coordinates

Anonymous User — Mon, 04 Jan 2021 15:10:40 GMT

Congratulations I just saw here on my PC suffered and also showed my son how we were amazed by the presentation. Thank you very much.

Re: ArcGIS API Viewshed with specific coordinates

JohnGrayson — Mon, 04 Jan 2021 16:37:17 GMT

Here's a codepen showing a modified version of that sample that performs the analysis at a specific location:

https://codepen.io/john-grayson/pen/yLajLqP

I hope this helps.

Re: ArcGIS API Viewshed with specific coordinates

MatthiasRedl — Mon, 04 Jan 2021 19:55:34 GMT

Thanks so much for the response. That helps a lot!

I opened the new script in the Sandbox and was trying to go above 20.000 meters for the radius but somehow it doesn't work. Do you know if there is a limitation for this geoprocess at 20 kilometers?

Re: ArcGIS API Viewshed with specific coordinates

JohnGrayson — Tue, 05 Jan 2021 16:52:26 GMT

Limits are defined by the service authors. In the case of the service used in the sample above since it's just used just for demonstration purposes having a limit on the radius is understandable. To learn more about elevation services that are available on ArcGIS Online in general and viewshed parameters and limitations check out some of these resources:

get started with elevation services

Viewshed