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I have a point feature and am interested in finding the least cost path between two points in the feature using a raster as the cost surface. I first calculate the cost distance and cost backlink via the CostDistance tool. I then use the CostPath tool to get the actual path and then look at the PATHCOST attribute for the raster cell's with value 3.

What I do not understand is if I run the CostPath tool with output workspace pointed at a GDB, the PATHCOST comes out as expected. When I run the CostPath tool using in_memory (this is actually part of a script) as the output workspace, the PATHCOST values always come out to zero. I've debugged this until I was able to pintpoint this as culprit, happening in ArcMap as well, not just the script environment.

  • 3 years later I have the same problem. unfortunately nobody answered... – Christoph Jul 26 '16 at 13:00
  • This does not really answer the question. If you have a different question, you can ask it by clicking Ask Question. You can also add a bounty to draw more attention to this question once you have enough reputation. - From Review – ArMoraer Jul 26 '16 at 13:36
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This is a documented bug: Bug BUG-000083280 Using in_memory workspaces causes the PATHCOST field to result in zero values.

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