VTK PolyData Details
The VTK exporter in Chimera and ChimeraX (used by the ChimeraX
was contributed by Shawn Waldon as part of the SketchBio project in 2013.
It exports molecular structures and surfaces, not density maps,
to an ascii legacy VTK file format [documentation
For molecular structures,
it exports points and lines for the atoms and bonds, and for surfaces
it exports a mesh. At each point (atoms and surface), it exports attributes
of the associated atom: modelNum, atomNum, resType, resNum, atomType,
bFactor, occupancy, and chainPosition.
- modelNum, atomNum, and resNum are integer indices starting with 0.
Models are numbered 0,1,2... sequentially
(not using the ChimeraX model ID), and the atom and residue indices are
positions in the lists of all atoms and all residues per model, respectively.
- atomType and resType refer to the ChimeraX atom name and residue name,
e.g., CA and TRP
- chainPosition is the residue index in a chain (starting with 0)
divided by the number of residues in that chain
UCSF Resource for Biocomputing, Visualization, and Informatics /