.. auto-generated by dev_tools.docs.nxdl from the NXDL source base_classes/NXparameters.nxdl.xml -- DO NOT EDIT

.. index::
    ! NXparameters (base class)
    ! parameters (base class)
    see: parameters (base class); NXparameters

.. _NXparameters:

============
NXparameters
============

..
    Contributors List

    .. |contrib_name| replace:: Pete R Jemian|prjemian|https://avatars.githubusercontent.com/u/2279984?v=4|2022-01-28

    .. |contrib_name| replace:: Peter Chang|PeterC-DLS|https://avatars.githubusercontent.com/u/1381719?v=4|2020-10-20

    .. |contrib_name| replace:: Tobias Richter|zjttoefs|https://avatars.githubusercontent.com/u/856440?v=4|2018-05-15

**Status**:

  base class, extends :ref:`NXobject`

**Description**:

  Container for parameters, usually used in processing or analysis.

**Symbols**:

  No symbol table

**Groups cited**:
  none

**Structure**:

  .. _/NXparameters@default-attribute:

  .. index:: default (file attribute)

  **@default**: (optional) :ref:`NX_CHAR <NX_CHAR>` 

    .. collapse:: Declares which child group contains a path leading  ...

        .. index:: plotting

        Declares which child group contains a path leading 
        to a :ref:`NXdata` group.

        It is recommended (as of NIAC2014) to use this attribute
        to help define the path to the default dataset to be plotted.
        See https://www.nexusformat.org/2014_How_to_find_default_data.html
        for a summary of the discussion.

  .. _/NXparameters/term-field:

  .. index:: term (field)

  **term**: (optional) :ref:`NX_CHAR <NX_CHAR>` 

    A parameter (also known as a term) that is used in or results from processing.

    .. _/NXparameters/term@units-attribute:

    .. index:: units (field attribute)

    **@units**: (optional) :ref:`NX_CHAR <NX_CHAR>` 



Hypertext Anchors
-----------------

List of hypertext anchors for all groups, fields,
attributes, and links defined in this class.


* :ref:`/NXparameters/term-field </NXparameters/term-field>`
* :ref:`/NXparameters/term@units-attribute </NXparameters/term@units-attribute>`
* :ref:`/NXparameters@default-attribute </NXparameters@default-attribute>`

**NXDL Source**:
  https://github.com/nexusformat/definitions/blob/main/base_classes/NXparameters.nxdl.xml