FEATool Multiphysics  v1.14 Finite Element Analysis Toolbox

## Description

[ A ] = GRIDADJ( C, N_SDIM ) Generates an array A with indices to neighboring cells and zeros where no neighbors are found. Input data is an array C with cell connectivities and N_SDIM specifying the number of space dimensions.

Input       Value/(Size)           Description
-----------------------------------------------------------------------------------
c           (n_v,n_c)              Cell connectivity pointer array where the
entries in each column correspond to the
cell vertex numbers specifying the cells.
n_sdim      scalar                 Number of space dimensions.
.
Output      Value/(Size)           Description
-----------------------------------------------------------------------------------
a           (n_e,n_c)              Array with cell adjacency pointers where
the entries in each column correspond to
the neighbouring cell number for each
edge or face. A zero entry indicates that
the edge/face belongs to an external boundary.