Description Usage Arguments Value Examples

`nsCrossdist3d`

generates and returns new 3-dimensional arrays containing
the former dist1_sq, dist2_s1, and dist12 matrices, but
only as needed for the k nearest-neighbors of each location.
these 3D matrices (dist1_3d, dist2_3d, and dist12_3d)
are used in the new implementation of calculateAD_ns().

1 2 3 4 5 6 7 | ```
nsCrossdist3d(
coords,
predCoords,
P_nID,
scale_factor = NULL,
isotropic = FALSE
)
``` |

`coords` |
N x d matrix; contains the x-y coordinates of stations. |

`predCoords` |
M x d matrix |

`P_nID` |
N x k matrix; contains indices of nearest neighbors. |

`scale_factor` |
Scalar; optional argument for re-scaling the distances. |

`isotropic` |
Logical; indicates whether distances should be calculated
separately for each coordinate dimension (FALSE) or simultaneously for all
coordinate dimensions (TRUE). |

Arrays with nearest neighbor distances in each coordinate direction. When the spatial dimension d > 2, dist1_3d contains squared Euclidean distances, and dist2_3d and dist12_3d are empty.

1 2 3 4 5 6 |

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