mesh.Mesh.adjacent_to

Mesh.adjacent_to(elements, level=0)

Find the elements adjacent to the specified elements.

Adjacent elements are elements that share some lower entity.

Parameters

elements: int or int array_like

Element numbers to find the adjacent elements for.

level: int

The level of the entities used to define adjacency. If negative, it is a value relative to the level of the caller. If non-negative, it specifies the absolute level. Default is 0 (nodes).

Returns

int array

A list of the numbers of all the elements in the Mesh that are adjacent to any of the specified elements.

Examples

>>> M = Mesh(eltype='quad4').subdivide(3,2)
>>> print(M.adjacent_to(0))
[1 3 4]
>>> print(M.adjacent_to(0, level=1))
[1 3]
>>> print(M.adjacent_to([0, 1], level=1))
[0 1 2 3 4]