__getitem__()

CenterGrid.__getitem__(key: int | slice | ellipsis | tuple[int | slice | ellipsis, ...] | ndarray[Any, dtype[_ScalarType_co]]) → ndarray[Any, dtype[float64]] | floatSource

Return center grid coordinates indexed by (l, m, n, xyz).

Returned grid coordinates are in \((X, Y, Z)\) which can be specified by l: radial, m: poloidal, n: torodial indices.

Examples

>>> cgrid = CenterGrid("zone0", index_type="cell")
>>> cgrid[0, 0, 0, :]  # (l=0, m=0, n=0)
array([ 3.59664909e+00,  7.84665944e-03, -5.75750000e-04])  # (x, y, z)

>>> cgrid[:, -10, 0, :]  # (radial coords at m=-10, n=0)
array([[3.59672601e+00, 7.84684125e-03, 1.13558333e-03],
        [3.57695347e+00, 7.80372411e-03, 1.03814167e-02],
        ...
        [3.26883531e+00, 7.13347363e-03, 1.63643583e-01]])