I am conducting a cost distance analysis for many points on the same map (roughly 350 sets of source/destination points, creating 350 different cost distance paths in total). The map is large, at approximately 3.0*10^5 km^2. I have created the cost surface for the geographic region, as well. All that needs to be done is to run the information in the Cost Distance tool with a loop via Arcpy. This task will be time consuming, though, and I am wondering if there are any "shortcuts" I can take to reduce computation time.

Since I am using the same map to conduct my cost-distance analysis, can I somehow use the same backlink and same cost distance rasters created with the first source/destination points for the remaining ~349 source/destination points, produce incorrect results?

closed as off-topic by PolyGeo Feb 7 '18 at 20:39

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions seeking help to debug/write/improve code must include the desired behavior, a specific problem or error and the shortest code necessary to reproduce it in the question itself. Providing a clear problem statement and evidence of a code attempt will help others to help you. See: How to create a Minimal, Complete, and Verifiable example." – PolyGeo
If this question can be reworded to fit the rules in the help center, please edit the question.

  • Can you provide a code snippet that illustrates how you are currently doing this, please? Questions asking how to improve code should present code. – PolyGeo Feb 7 '18 at 20:18
  • Unfortunately I have yet to implement any code but it will likely be similar to this post: gis.stackexchange.com/questions/95773/… – Zach Feb 7 '18 at 20:23
  • That sounds like some starting code for your first cut so I think you should begin by testing it or something based on it. – PolyGeo Feb 7 '18 at 20:40