Comments (1)
@kornholi, rounding elevation values to integer can change the configuration of flats, so is expected to change the results. Whether these differences are reasonable or not would depend on the actual data. For example if you have elevations
9.4, 10.1, 10, 9.9, 9.8, 9.8, 9.7, 8.4 in one dimension you only have one flat (the left hand 9.8), and it would drain to the right
However rounded this is
9, 10, 10, 10, 10, 10, 10, 8
so you have 4 flat cells and 2 would drain to left and 2 to right.
In 2D it is obviously more complicated, but rounding will affect the results. This is why we prefer floating point grids.
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