mdtraj.load_frame(filename, index, top=None, atom_indices=None, \*\*kwargs)

Load a single frame from a trajectory file

Parameters
filenamestr

Path to the trajectory file on disk

indexint

Load the index-th frame from the specified file

top{str, Trajectory, Topology}

Most trajectory formats do not contain topology information. Pass in either the path to a RCSB PDB file, a trajectory, or a topology to supply this information.

atom_indicesarray_like, optional

If not none, then read only a subset of the atoms coordinates from the file. These indices are zero-based (not 1 based, as used by the PDB format).

Returns
trajectorymd.Trajectory

The resulting conformation, as an md.Trajectory object containing a single frame.

Examples

>>> import mdtraj as md