topic Re: Eucledian Distance not working in ArcGIS Pro Questions

Eucledian Distance not working

furry_ferret — Sat, 25 Mar 2023 19:01:34 GMT

Hi all,

im trying to calculate Eucledian Distance with a Raster Dataset. Its basically a river network which i extracted from the DEM. Whenever i run the tool, i dont get the distances but the whole are just fills up with one color.

Can someone help me how to fix this?

Much obliged

Ferret

Re: Eucledian Distance not working

DanPatterson — Sat, 25 Mar 2023 19:50:52 GMT

What does the flow_recl look like?

Euclidean Distance (Spatial Analyst)—ArcGIS Pro | Documentation

describes what is considered a source cell, so any cell with a valid value (eg not nonodata) is a source

Newer versions of Pro should be using

Distance Accumulation (Spatial Analyst)—ArcGIS Pro | Documentation

Re: Eucledian Distance not working

DavidPike — Sat, 25 Mar 2023 19:52:35 GMT

Can you share a screenshot of flow_recl1 ? When you click on a few pixels of the euclidean distance result and flow_rec1 what values do you get?

To me it just looks like you've set the other raster cells in flow_rec1 to no symbology rather than actually reclassifying the data https://pro.arcgis.com/en/pro-app/latest/tool-reference/spatial-analyst/reclassify.htm. What are the cell values of 1 in the screenshot?

This would explain the Euclidean distance result, as the tool doesn't care about how you symbolise the input data.

Re: Eucledian Distance not working

furry_ferret — Sat, 25 Mar 2023 20:03:30 GMT

Re: Eucledian Distance not working

furry_ferret — Sat, 25 Mar 2023 20:06:57 GMT

Re: Eucledian Distance not working

DavidPike — Sat, 25 Mar 2023 20:08:34 GMT

what's the cell values of 1 on flow_rec1? can you change that symbology to a colour rather than blank?

Re: Eucledian Distance not working

furry_ferret — Sat, 25 Mar 2023 20:17:07 GMT

that was the setup. 0 = 0-4400 and 1 = >4400

Re: Eucledian Distance not working

DavidPike — Sat, 25 Mar 2023 20:21:23 GMT

This is exactly the problem, 0 is still a value. You need to change it to NODATA then re-run the Euclidean distance with that new layer. I'm sure it will work as intended then.

Re: Eucledian Distance not working

furry_ferret — Sat, 25 Mar 2023 20:25:06 GMT

It worked! Thanks alot 🙂

Re: Eucledian Distance not working

DanPatterson — Sat, 25 Mar 2023 20:37:28 GMT

grief 🙄