Molecule Tutorials - Herong's Tutorial Examples - 1.01, by Dr. Herong Yang
Frames and "mset" Command
This section provides a quick introduction about 'frame', which represents a single image in a set of still images that generates moving pictures in PyMol.
What Is Frame in PyMol? A frame is a concept used in the movie making to represent a single image in a set of still images that generates moving pictures when played sequentially at a high speed.
Frame rate is the number of frames played in a second. The default frame rate in PyMol is 30 frames per second, or 30 f/s.
If you want create a movie in PyMol, you can use the "mset" command to define the entire set of frames based on states of structure objects.
mset frame_expression frame_expression ...
"frame_expression" is an expression to generate frames based state numbers. It has 3 formats:
For example, the following command defines a movie with 300 frames by repeating frame #1 100 times, #2 100 times, and #3 100 times. If the frame rate is 30 f/s, this movie will play for 9 seconds.
mset 1 x90 2 x90 3 x90
The following command defines a movie with 3 frames. Each frame is generated from a different state. If the frame rate is 30 f/s, this movie will play for 0.1 seconds.
mset 3 2 1
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