Has anyone encountered an issue with the Distance Accumulation tool output having some cells null when they should be reachable from the source location?
I have a cost raster that narrows down to 1 or 2 cell wide paths in some places due to natural barriers that are null. The distance accumulation tool sometimes stops at these narrow areas, leaving me with a gap that prevents the output from being used in downstream optimal path tools.
I'm using Pro 2.9 (also tried 2.8), projection is WGS84 Web Mercator, and tool is doing Geodesic distance. I'm using snap raster and keeping cell size consistent throughout all the processing, so not sure why this is happening.
The article "Distance Accumulation Algorithm" says that it should be able to navigate through a diagonal connection with barriers
![AndyPandy_1-1647217662323.png AndyPandy_1-1647217662323.png](https://community.esri.com/t5/image/serverpage/image-id/36233i9531C23BB7285C2E/image-size/medium?v=v2&px=400)
Below is a screenshot of what I'm seeing
The pink area is the output from the distance accumulation tool. The feature source for the distance accumulation is off screen to the right of the map.
The green is the underlying cost distance raster (cost value = 2). You can see the green because the cost distance did not calculate on those cells.
The Blue is the destination point I'm trying to connect to from the source in the next step (Optimal Path tool). However, since the distance accumulation is null for this small section, the Optimal Path tool can't create the line from source to destination.
![AndyPandy_2-1647218391606.png AndyPandy_2-1647218391606.png](https://community.esri.com/t5/image/serverpage/image-id/36234iBEFAD628F0E41E58/image-size/medium?v=v2&px=400)