Is there a way to find farthest in ArcGIS Online

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04-17-2019 04:19 PM
AydanScott
New Contributor

Is there any way in ArcGIS Online to find and select the two farthest points within a map or to find the farthest point from a selected point on the map and find the distance? Example, select Los Angeles as a city point and find the farthest city that you have a point for on the map and show the distance. Or even select Los Angeles as a city point and find the farthest point on the boundary of the contiguous US and create a specific point. Maybe even create a buffer layer that extends to that farthest point. I know there is a nearest function, but don't know how to find farthest if it is even possible currently. If not would there ever be an incentive to add a function for that? 

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KristaMcPherson
Esri Contributor

My initial research indicates that a tool which would directly calculate the farthest point from another existing does not exist. A few posts that I located on GIS Stack Exchange reference zonal tools, particularly the Zonal Statistics, which is a part of the Spatial Analyst toolbox. Please see the links below for more information. 

Overview of Zonal Toolset: https://pro.arcgis.com/en/pro-app/tool-reference/spatial-analyst/an-overview-of-the-zonal-tools.htm

Zonal Statistics: https://pro.arcgis.com/en/pro-app/tool-reference/spatial-analyst/zonal-statistics.htm

I believe that a calculation like this would require multiple tools and/or tools that involve raster calculations beyond the default, from what I understand. 

AydanScott
New Contributor

Thank you for your suggestion! I will look into that.

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