fix_modify AtC fix command — LAMMPS documentation

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# fix_modify AtC fix command

## Syntax

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

- AtC fixID = ID of fix atc instance

- fix = 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 boundary condition

- constant or function = value or name of function followed by its parameters

## Examples

    fix_modify AtC fix temperature groupNAME 10.
    fix_modify AtC fix temperature groupNAME 0 0 0 10.0 0 0 1.0

## Description

Creates a constraint on the values of the specified field at specified nodes.

## Restrictions

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

## Related AtC commands

- fix_modify AtC command overview

- fix_modify AtC unfix

## Default

None.