View source for Centerofmass

The [[centerofmass]] command calculates the center of mass for an atom selection. It considers atom mass and occupancy.

''New in PyMOL 1.7.2. See the [[center_of_mass]] script for older PyMOL versions.''

== Usage ==

 centerofmass [ selection [, state ]]

== Arguments ==

* '''selection''' = str: atom selection {default: all}
* '''state''' = int: object state, -1 for current state, 0 for all states {default: -1}

== Example ==

 PyMOL> fetch 1ubq, async=0
 PyMOL> centerofmass
  Center of Mass: [  30.004,  28.522,  14.701]

== Python API ==

<syntaxhighlight lang="python" inline>cmd.centerofmass()</syntaxhighlight>
returns a list of 3 floats.

== See Also ==

* [[get_extent]]
* [[center of mass]] (script)
* [[COM]] (script)

[[Category:Commands]]