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2014-03-28T01:46:40Z

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==Multiple Object Manipulation Scripts==

===Dis/Enable Objects===
If someone has many (possibly hundreds) of objects -- say distance objects -- one can turn them all on or off by using Python scripts within PyMol. The following script will extend the commands "sd" and "hd" for "show distance" and "hide distance," respectively. The first script,

<source lang="python">
from pymol import cmd
num_dist = 100

def show_dist():
""" show all of my distance objects """
for i in range(num_dist):
cmd.enable('_dist%s'%i)

def hide_dist():
""" hide all of my distance objects """
for i in range(num_dist):
cmd.disable('_dist%s'%i)

cmd.extend('sd',show_dist)
cmd.extend('hd',hide_dist)
</source>

works on 100 objects. We can extend the idea with more elegant scripting to work w/o forcing us to keep track of the number of objects:

<source lang="python">
def show_dist():
dists = [name for name in cmd.get_names() if cmd.get_type(name) == 'object:distance']
for name in dists: cmd.enable(name)
</source>

Now, just running "sd" would show all the distance objects.

===Comments in Scripts===
The hash-mark, "#" is the Python comment. However, when scripting in Python for PyMol note that the hash character (#) works to include comments on separate lines, but not at the end of a line that contains commands. So you can do
<source lang="python">
# Create separate dimer
create dimer,(chain A,B)
</source>
but not
<source lang="python">
create dimer,(chain A,B) # Create separate dimer
</source>

====Sources====
Taken from the PyMol Users list. Python source by Michael Lerner.

[[Category:Scripting|Example Scripts]]

Example Scripts - Revision history

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