.. index:: fix_modify AtC initial

fix_modify AtC initial command
====================================

Syntax
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.. code-block:: LAMMPS

   fix_modify <AtC fixID> initial <field> <nodeset> <constant|function>

* AtC fixID = ID of :doc:`fix atc <fix_atc>` instance
* initial = name of the AtC sub-command
* field = field kind name valid for type of physics: *temperature* or *electron_temperature*
* nodeset = name of set of nodes to apply initial condition
* *constant* or *function* = value or name of function followed by its parameters

Examples
""""""""

.. code-block:: LAMMPS

   fix_modify AtC initial temperature groupNAME 10.

Description
"""""""""""

Sets the initial values for the specified field at the specified nodes.

Restrictions
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The keyword *all* is reserved and thus not available as nodeset name.

Related AtC commands
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- :ref:`fix_modify AtC command overview <atc_fix_modify>`

Default
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None.
