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- How to calculate the longest flow path in GRASS GIS
- Simply converting the lfp raster map to vector won’t produce the correct vector map because of this issue. To properly trace the longest flow path in vector format, we need to find the headwater raster cells and start tracing flow directions from there. Using the maximum flow length found above (21452.825), find the headwater cells from FLDS and create a new vector map with the headwater points.
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- How to delineate stream networks in GRASS GIS