.. _method-surrogate_based_uq-export_approx_points_file:

"""""""""""""""""""""""""
export_approx_points_file
"""""""""""""""""""""""""


Output file for surrogate model value evaluations


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

   method-surrogate_based_uq-export_approx_points_file-custom_annotated
   method-surrogate_based_uq-export_approx_points_file-annotated
   method-surrogate_based_uq-export_approx_points_file-freeform


**Specification**

- *Alias:* export_points_file 

- *Arguments:* STRING

- *Default:* no point export to a file


**Child Keywords:**

+-------------------------+--------------------+----------------------+---------------------------------------------+
| Required/Optional       | Description of     | Dakota Keyword       | Dakota Keyword Description                  |
|                         | Group              |                      |                                             |
+=========================+====================+======================+=============================================+
| Optional (Choose One)   | Tabular Format     | `custom_annotated`__ | Selects custom-annotated tabular file       |
|                         |                    |                      | format                                      |
|                         |                    +----------------------+---------------------------------------------+
|                         |                    | `annotated`__        | Selects annotated tabular file format       |
|                         |                    +----------------------+---------------------------------------------+
|                         |                    | `freeform`__         | Selects freeform file format                |
+-------------------------+--------------------+----------------------+---------------------------------------------+

.. __: method-surrogate_based_uq-export_approx_points_file-custom_annotated.html
__ method-surrogate_based_uq-export_approx_points_file-annotated.html
__ method-surrogate_based_uq-export_approx_points_file-freeform.html



**Description**


Specifies a file in which the points (input variable values) at which
the surrogate model is evaluated and corresponding response values
computed by the surrogate model will be written.  The response values
are the surrogate's predicted approximation to the truth model
responses at those points.

*Usage Tips*

Dakota exports tabular data in one of three formats:

- ``annotated`` (default)
- ``custom_annotated``
- ``freeform``