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for the first time I run the Path Distance tool in ArcGIS but I guess something went wrong, and the process went into a loop. I needed to calculate the path distance to rivers. I use a rivers shpfile (lines) and the DEM as surface raster.

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    are you using python or modelbuilder? I think you may need to input a cost raster (ei: reclasified slope, weighted overlay analysis etc..) not just a a surface raster. and what do you mean by loop?
    – ziggy
    Apr 26, 2016 at 16:47

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