Distance: Difference between revisions

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===EXAMPLE===
===EXAMPLES===
This neat example shows how to create distance measurements from an atom in a molecule to all other atoms in the molecule (since PyMol supports wildcards).
*This neat example shows how to create distance measurements from an atom in a molecule to all other atoms in the molecule (since PyMol supports wildcards).
<source lang="python">
<source lang="python">
  cmd.dist("(/mol1///1/C)","(/mol1///2/C*)")
  cmd.dist("(/mol1///1/C)","(/mol1///2/C*)")
Line 33: Line 33:
or written without the PyMolScript code,
or written without the PyMolScript code,
  dist /mol1///1/C, /mol1///2/C*
  dist /mol1///1/C, /mol1///2/C*
*Create multiple distance objects
<source lang="python">
for at1 in cmd.index("resi 10"): \
  for at2 in cmd.index("resi 11"): \
      cmd.dist(None, "%s`%d"%at1, "%s`%d"%at2)
</source>


===SEE ALSO===
===SEE ALSO===

Revision as of 20:42, 11 August 2005

DESCRIPTION

"distance" creates a new distance object between two selections. It will display all distances within the cutoff.

USAGE

distance 
distance (selection1), (selection2)
distance name = (selection1), (selection2) [,cutoff [,mode] ]

name = name of distance object 
selection1, selection2 = atom selections
cutoff = maximum distance to display
mode = 0 (default)

PYMOL API

cmd.distance( string name, string selection1, string selection2,
              string cutoff, string mode )
  # returns the average distance between all atoms/frames

NOTES

The distance wizard makes measuring distances easier than using the "dist" command for real-time operations.

"dist" alone will show distances between selections (pk1) and (pk1), which can be set using the PkAt mouse action (usually CTRL-middle-click).


EXAMPLES

  • This neat example shows how to create distance measurements from an atom in a molecule to all other atoms in the molecule (since PyMol supports wildcards).
 cmd.dist("(/mol1///1/C)","(/mol1///2/C*)")

or written without the PyMolScript code,

dist /mol1///1/C, /mol1///2/C*
  • Create multiple distance objects
for at1 in cmd.index("resi 10"): \
   for at2 in cmd.index("resi 11"): \
       cmd.dist(None, "%s`%d"%at1, "%s`%d"%at2)

SEE ALSO

Measure_Distance