1

I need to know if there are simple commands for this 2 points:

  1. the distance from the nearest stream, D [m], defined as the length of the path that hydrologically connects the location under exam to the nearest element of the reference drainage network;

  2. the elevation to the nearest stream, H [m], computed as the difference between the elevation of the cell under exam and the elevation of the final point of the aboveidentified path.

For the number 1, i tried "cost distance" but i'm not sure.

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