xrspatial.hydro.hand_mfd.hand_mfd#

xrspatial.hydro.hand_mfd.hand_mfd(flow_dir_mfd: DataArray, flow_accum: DataArray, elevation: DataArray, threshold: float = 100, name: str = 'hand_mfd') → DataArray[source]#

Compute HAND using MFD flow direction.

Parameters:

  • flow_dir_mfd (xarray.DataArray) – 3D MFD flow direction array of shape (8, H, W).

  • flow_accum (xarray.DataArray) – 2D flow accumulation grid.

  • elevation (xarray.DataArray) – 2D elevation grid.

  • threshold (float, default 100) – Minimum flow accumulation to define a stream cell.

  • name (str, default 'hand_mfd') – Name of output DataArray.

Returns:

2D float64 HAND grid. Stream cells have HAND = 0.

Return type:

xarray.DataArray