yt.utilities.amr_kdtree.amr_kdtree.AMRKDTree.locate_neighbors_from_position¶

AMRKDTree.locate_neighbors_from_position(position)[source]¶

Given a position, finds the 26 neighbor grids and cell indices.

This is a mostly a wrapper for locate_neighbors.

Parameters:

Parameters:	position: array-like : Position of interest
Returns:	grids: Numpy array of Grid objects : cis: List of neighbor cell index tuples : Both of these are neighbors that, relative to the current cell : index (i,j,k), are ordered as: : (i-1, j-1, k-1), (i-1, j-1, k ), (i-1, j-1, k+1), ... : (i-1, j , k-1), (i-1, j , k ), (i-1, j , k+1), ... : (i+1, j+1, k-1), (i-1, j-1, k ), (i+1, j+1, k+1) : That is they start from the lower left and proceed to upper : right varying the third index most frequently. Note that the : center cell (i,j,k) is ommitted. :

position: array-like :

Position of interest

Returns:

grids: Numpy array of Grid objects :

cis: List of neighbor cell index tuples :

Both of these are neighbors that, relative to the current cell :

index (i,j,k), are ordered as: :

(i-1, j-1, k-1), (i-1, j-1, k ), (i-1, j-1, k+1), ... :

(i-1, j , k-1), (i-1, j , k ), (i-1, j , k+1), ... :

(i+1, j+1, k-1), (i-1, j-1, k ), (i+1, j+1, k+1) :

That is they start from the lower left and proceed to upper :

right varying the third index most frequently. Note that the :

center cell (i,j,k) is ommitted. :