topic Re: Viewshed Analysis completed. But fail to display. in ArcGIS Pro Questions

Viewshed Analysis completed. But fail to display.

HuaxinWang — Sat, 04 May 2024 09:35:48 GMT

I performed a viewshed analysis to create a layer showing the visibility from roads.

Here is my input and output: I convert roads from lines to points as observation points.

It completed.

But the the map view displayed nothing. I zoomed in, also nothing showed.

Any suggestions how to solve this?

Thanks in advance.

Re: Viewshed Analysis completed. But fail to display.

DanPatterson — Sat, 04 May 2024 11:28:18 GMT

open a new map without any basemap or defined coordinate system

Add the raster to it, can you see it?

right-click on the layer and select "zoom to layer"

If either of those methods works, then the raster doen't have a defined coordinate system and you will need to use the Define Projection tool to assign the correct one

Re: Viewshed Analysis completed. But fail to display.

HuaxinWang — Sat, 04 May 2024 19:08:08 GMT

Thank you very much for your response.

The viewshed I performed complete, but the output file only two. No raster.

It might due to something wrong with the input point or polyline observer features for the viewshed tool. Now I am trying to use Feature Vertices To Points to convert the vertices in polyline road.shp to points as the observation points. https://community.esri.com/t5/geoprocessing-questions/visibility-analysis-using-a-polyline/m-p/576771

https://pro.arcgis.com/en/pro-app/latest/tool-reference/data-management/feature-vertices-to-points.htm

but I am stuck with how to limit the maximum number of points converted from vertices.

Re: Viewshed Analysis completed. But fail to display.

HuaxinWang — Sat, 04 May 2024 19:18:18 GMT

I guess I need to find the tutorial of road/line visibility analysis with Arcgis or Qgis.

Too many tutorial about points but few about lines.

Re: Viewshed Analysis completed. But fail to display.

David_Brooks — Mon, 06 May 2024 06:50:05 GMT

You haven't defined the raster type. Put .tif on the end of your output raster.

(Only leave the file extension out if your output is going into a gdb. If you've got an xml going into a folder somewhere, then you've not written to gdb here)