Stream order index of all cells on a local drain direction network
Result = streamorder(ldd)
The classification of stream networks was originally developed by Horton, and modified by Strahler. Following the scheme of Strahler, streamorder designates an order 1 to the smallest channels, which are the cells with no upstream cells connected to that cell. Where two channels of order 1 join, a channel of order 2 results downstream. In general, where two channels of order i join, a channel of order i+1 results.
This operation belongs to the group of Neighbourhood operators; local drain directions
- • pcrcalcbindingResult = Result.map;Ldd = Ldd.map;initialreport Result = streamorder(Ldd);• pythonLdd = readmap(“Ldd.map”)Result = streamorder(Ldd)