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I couldn't say what went wrong with your conversion to 3d. However you could use an sDNA hybrid metric based on CYCLE_ROUNDTRIP and adapt it to estimate link slope from its endpoint elevations. The default CYCLE_ROUNDTRIP metric is printed to sDNA's output when you run it: lineformula=_a=0.2,_s=2,_t=0.04,_slope = hg/FULLeuc*100,_slopefac = _slope<2?1:(...


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Grouping of roads is very complicated task. Optimal solution will take ages to achieve. I tried the idea explained in this answer to Grouping village points based on distance and population size using ArcMap on a set of roads totaling 368 km in length and attempted to split it into 5 'equal length' parts. Picture shows result: As one can see results are ...


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