def add_position(self, radial=False, chunksize=<NUM_LIT:2>**<NUM_LIT>, chunkslice='<STR_LIT>',<EOL>comp_filter=default_compression, overwrite=False,<EOL>params=dict()):
nparams = self.numeric_params<EOL>num_particles = nparams['<STR_LIT>']<EOL>name, ncoords, prefix = '<STR_LIT>', <NUM_LIT:3>, '<STR_LIT>'<EOL>if radial:<EOL><INDENT>name, ncoords, prefix = '<STR_LIT>', <NUM_LIT:2>, '<STR_LIT>'<EOL><DEDENT>title = '<STR_LIT>' % prefix<EOL>return self.add_trajectory(name, shape=(num_particles, ncoords, <NUM_LIT:0>),<EOL>overwrite=overwrite, chunksize=chunksize,<EOL>comp_filter=comp_filter,<EOL>atom=tables.Float32Atom(),<EOL>title=title,<EOL>params=params)<EOL>
Add the `position` array in '/trajectories'.