SimPEG.utils.av#
- SimPEG.utils.av(n)[source]#
Create 1D averaging operator from nodes to cell-centers.
For n cells, the 1D averaging operator from nodes to centerss is sparse, has shape (n, n+1) and takes the form:
\[ \begin{align}\begin{aligned}\begin{bmatrix} 1/2 & 1/2 & & & \\& 1/2 & 1/2 & & \\& & \ddots & \ddots & \\& & & 1/2 & 1/2 \; \end{bmatrix}\end{aligned}\end{align} \]- Parameters
- n
int Number of cells
- n
- Returns
- (
n,n+ 1)scipy.sparse.csr_matrix The 1D averaging operator from nodes to centers.
- (