com1DFA.DFAtools.getAreaMesh

getAreaMesh(dem, num)

Get area of grid cells.

Parameters

• dem dict updated with –

  Nx: 2D numpy array

  x component of the normal vector field on grid points

  Ny: 2D numpy array

  y component of the normal vector field on grid points

  Nz: 2D numpy array

  z component of the normal vector field on grid points

  headerdict

  dem header (cellsize)

• num (int) – chose between 4, 6 or 8 (using then 4, 6 or 8 triangles) or 1 to use the simple cross product method (with the diagonals)

Returns

areaRaster: 2D numpy array

real area of grid cells

Return type

dem dict updated with