.. _method-polynomial_chaos-export_expansion_file:

"""""""""""""""""""""
export_expansion_file
"""""""""""""""""""""


Export the coefficients and multi-index of a Polynomial Chaos Expansion (PCE) to a file


.. toctree::
   :hidden:
   :maxdepth: 1



**Specification**

- *Alias:* None

- *Arguments:* STRING


**Description**


Export the coefficients and multi-index of a Polynomial
Chaos Expansion (PCE) to a file. The multi-index written will be
sparse. Spcifically the expansion will conists only of the indices
corresponding to the non-zero coefficients of the PCE.


