Difference between revisions of "Smooth"
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(Created page with '= Overview = Smooth performs a window average of coordinate states. = Usage = <source lang="python"> smooth [ selection [, passes [, window [, first [, last [, ends]]]]]] ...') |
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Revision as of 07:55, 30 April 2009
Overview
Smooth performs a window average of coordinate states.
Usage
smooth [ selection [, passes [, window [, first [, last [, ends]]]]]]
# for example, smooth and object with 30 passes and
# a window size of 100.
smooth myObj, 30, 100
- ends = 0 or 1: controls whether or not the end states are also smoothed using a weighted asymmetric window
NOTES
- This type of averaging is often used to suppress high-frequency vibrations in a molecular dynamics trajectory.
- This function is not memory efficient. For reasons of flexibility, it uses two additional copies of every atomic coordinate for the calculation. If you are memory-constrained in visualizing MD trajectories, hen you may want to use an external tool such as ptraj to perform smoothing before loading coordinates into PyMOL.