topic Back Direction Rasters_default save place? in ArcGIS Pro Questions

Back Direction Rasters_default save place?

rudbeckia — Fri, 08 Aug 2025 19:07:38 GMT

Hello,

Pretty sure this is a dumb question, but where does arcgis pro save back direction rasters from the distance accumulation tool.

I am running the distance accumulation tool to then run the least cost corridor tool which requires the back direction raster. Where do I find it once the accumulation tool is complete, I tried choosing a file location so I would know where it goes but I get an error when I do that, when I run it without choosing a location it runs fine but then I cant find it to use it.

Re: Back Direction Rasters_default save place?

DanPatterson — Fri, 08 Aug 2025 19:24:42 GMT

Distance Accumulation (Spatial Analyst)—ArcGIS Pro | Documentation

Look way at the botth for the supported parameters

If you don't specify a saving workspace for the primary output then the current workspace would be used.

If you don't specify an output filename with a *.tif extension and direct it to a folder then it will go to the current workspace which is probably a file geodatabase (unless your data are not locally stored).

Re: Back Direction Rasters_default save place?

rudbeckia — Fri, 08 Aug 2025 19:52:30 GMT

okay adding the tif extension worked, but now I am getting the error that the raster cell sizes don't match across the 4 rasters I am using,........they were all generated the same way, using the same everything, how can they have different cell sizes?

Re: Back Direction Rasters_default save place?

DanPatterson — Fri, 08 Aug 2025 20:16:00 GMT

cell size should be an overt specification when using rasters. You set this parameter in the Environments tab of all tools in arctoolbox. If you don't specify things like cell size, Pro makes an assumption (1/250 of the largest dimension of the analysis extent) which is usually not what you want. If you have an input raster to a tool, you should specify the cell size and analysis extent in the Environments tab of whatever tool you are using.

Re: Back Direction Rasters_default save place?

rudbeckia — Fri, 08 Aug 2025 21:07:23 GMT

okay will do that, thanks