5.28. Utility functions for the TPR topology parser

The MDAnalysis.topology.tpr module contains classes and functions on which the Gromacs TPR topology reader TPRParser is built.

5.28.1. TPR support

The MDAnalysis.topology.tpr module is required for the MDAnalysis.topology.TPRParser module.

MDAnalysis.topology.tpr.SUPPORTED_VERSIONS = (58, 73, 83, 100, 103, 110, 112, 116, 119, 122, 127)

Built-in immutable sequence.

If no argument is given, the constructor returns an empty tuple. If iterable is specified the tuple is initialized from iterable’s items.

If the argument is a tuple, the return value is the same object.

Sub-modules

MDAnalysis.topology.tpr.setting
MDAnalysis.topology.tpr.obj
MDAnalysis.topology.tpr.utils

5.28.2. TPRParser settings

Definition of constants.

The currently read file format versions are defined in SUPPORTED_VERSIONS.

MDAnalysis.topology.tpr.setting.F_ANGLES = 10: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_ANGRES = 58: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_ANGRESZ = 59: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_ANHARM_POL = 51: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_BHAM = 38: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_BHAM_LR = 40: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_BONDS = 0: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_CBTDIHS = 22: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_CMAP = 27: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_COM_PULL = 75: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_CONNBONDS = 4: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_CONSTR = 62: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_CONSTRNC = 63: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_COUL14 = 34: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_COUL_LR = 43: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_COUL_RECIP = 45: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_COUL_SR = 42: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_CROSS_BOND_ANGLES = 15: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_CROSS_BOND_BONDS = 14: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_CUBICBONDS = 3: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_DENSITYFITTING = 76: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_DHDL_CON = 86: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_DIHRES = 60: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_DIHRESVIOL = 61: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_DISPCORR = 41: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_DISRES = 54: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_DISRESVIOL = 55: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_DKDL = 88: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_DPD = 47: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_DVDL = 87: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_DVDL_BONDED = 91: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_DVDL_COUL = 89: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_DVDL_RESTRAINT = 92: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_DVDL_TEMPERATURE = 93: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_DVDL_VDW = 90: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_ECONSERVED = 81: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_EKIN = 79: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_EPOT = 78: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_EQM = 77: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_ETOT = 80: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_FBPOSRES = 53: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_FENEBONDS = 6: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_FOURDIHS = 23: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_G96ANGLES = 11: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_G96BONDS = 1: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_GB12 = 28: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_GB13 = 29: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_GB14 = 30: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_GBPOL = 31: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_HARMONIC = 5: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_IDIHS = 24: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_LINEAR_ANGLES = 13: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_LJ = 37: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_LJ14 = 33: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_LJC14_Q = 35: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_LJC_PAIRS_NB = 36: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_LJ_LR = 39: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_LJ_RECIP = 46: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_MORSE = 2: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_NPSOLVATION = 32: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_NRE = 94: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_ORIRES = 56: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_ORIRESDEV = 57: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_PDIHS = 19: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_PDISPCORR = 84: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_PIDIHS = 25: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_POLARIZATION = 48: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_POSRES = 52: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_PRES = 85: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_QUARTIC_ANGLES = 17: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_RBDIHS = 20: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_RESTRANGLES = 12: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_RESTRBONDS = 9: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_RESTRDIHS = 21: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_RF_EXCL = 44: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_SETTLE = 64: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_TABANGLES = 18: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_TABBONDS = 7: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_TABBONDSNC = 8: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_TABDIHS = 26: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_TEMP = 82: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_THOLE_POL = 50: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_UREY_BRADLEY = 16: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_VSITE1 = 65: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_VSITE2 = 66: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_VSITE2FD = 67: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_VSITE3 = 68: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_VSITE3FAD = 70: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_VSITE3FD = 69: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_VSITE3OUT = 71: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_VSITE4FD = 72: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_VSITE4FDN = 73: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_VSITEN = 74: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_VTEMP_NOLONGERUSED = 83: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.F_WATER_POL = 49: Function types from <gromacs_dir>/include/types/idef.h

MDAnalysis.topology.tpr.setting.SUPPORTED_VERSIONS = (58, 73, 83, 100, 103, 110, 112, 116, 119, 122, 127): Gromacs TPR file format versions that can be read by the TPRParser.

MDAnalysis.topology.tpr.setting.ftupd = [(20, 3), (20, 4), (20, 5), (34, 6), (43, 7), (43, 8), (70, 9), (98, 12), (76, 13), (30, 14), (30, 15), (30, 16), (34, 17), (43, 18), (98, 21), (98, 22), (26, 23), (26, 25), (43, 26), (65, 27), (60, 28), (61, 29), (61, 30), (72, 31), (72, 32), (41, 35), (41, 36), (32, 40), (32, 44), (32, 45), (93, 46), (46, 47), (30, 48), (36, 50), (90, 53), (22, 55), (22, 56), (22, 57), (26, 60), (26, 61), (49, 73), (50, 74), (46, 75), (20, 77), (46, 81), (69, 83), (66, 84), (54, 86), (76, 51), (79, 89), (79, 90), (79, 91), (79, 92), (79, 93), (117, 76), (121, 65), (118, 67)]: Function types from <gromacs_dir>/src/gmxlib/tpxio.c

MDAnalysis.topology.tpr.setting.interaction_types = [('BONDS', 'Bond', 2), ('G96BONDS', 'G96Bond', 2), ('MORSE', 'Morse', 2), ('CUBICBONDS', 'Cubic Bonds', 2), ('CONNBONDS', 'Connect Bonds', 2), ('HARMONIC', 'Harmonic Pot.', 2), ('FENEBONDS', 'FENE Bonds', 2), ('TABBONDS', 'Tab. Bonds', 2), ('TABBONDSNC', 'Tab. Bonds NC', 2), ('RESTRAINTPOT', 'Restraint Pot.', 2), ('ANGLES', 'Angle', 3), ('G96ANGLES', 'G96Angle', 3), ('RESTRANGLES', 'Restricted Angles', 3), ('LINEAR_ANGLES', 'Lin. Angle', 3), ('CROSS_BOND_BOND', 'Bond-Cross', 3), ('CROSS_BOND_ANGLE', 'BA-Cross', 3), ('UREY_BRADLEY', 'U-B', 3), ('QANGLES', 'Quartic Angles', 3), ('TABANGLES', 'Tab. Angles', 3), ('PDIHS', 'Proper Dih.', 4), ('RBDIHS', 'Ryckaert-Bell.', 4), ('RESTRDIHS', 'Restricted Dih.', 4), ('CBTDIHS', 'CBT Dih.', 4), ('FOURDIHS', 'Fourier Dih.', 4), ('IDIHS', 'Improper Dih.', 4), ('PIDIHS', 'Improper Dih.', 4), ('TABDIHS', 'Tab. Dih.', 4), ('CMAP', 'CMAP Dih.', 5), ('GB12', 'GB 1-2 Pol.', 2), ('GB13', 'GB 1-3 Pol.', 2), ('GB14', 'GB 1-4 Pol.', 2), ('GBPOL', 'GB Polarization', None), ('NPSOLVATION', 'Nonpolar Sol.', None), ('LJ14', 'LJ-14', 2), ('COUL14', 'Coulomb-14', None), ('LJC14_Q', 'LJC-14 q', 2), ('LJC_NB', 'LJC Pairs NB', 2), ('LJ_SR', 'LJ (SR)', 2), ('BHAM', 'Buck.ham (SR)', 2), ('LJ_LR', 'LJ (LR)', None), ('BHAM_LR', 'Buck.ham (LR)', None), ('DISPCORR', 'Disper. corr.', None), ('COUL_SR', 'Coulomb (SR)', None), ('COUL_LR', 'Coulomb (LR)', None), ('RF_EXCL', 'RF excl.', None), ('COUL_RECIP', 'Coul. recip.', None), ('LJ_RECIP', 'LJ recip.', None), ('DPD', 'DPD', None), ('POLARIZATION', 'Polarization', 2), ('WATERPOL', 'Water Pol.', 5), ('THOLE', 'Thole Pol.', 4), ('ANHARM_POL', 'Anharm. Pol.', 2), ('POSRES', 'Position Rest.', 1), ('FBPOSRES', 'Flat-bottom posres', 1), ('DISRES', 'Dis. Rest.', 2), ('DISRESVIOL', 'D.R.Viol. (nm)', None), ('ORIRES', 'Orient. Rest.', 2), ('ORDEV', 'Ori. R. RMSD', None), ('ANGRES', 'Angle Rest.', 4), ('ANGRESZ', 'Angle Rest. Z', 2), ('DIHRES', 'Dih. Rest.', 4), ('DIHRESVIOL', 'Dih. Rest. Viol.', None), ('CONSTR', 'Constraint', 2), ('CONSTRNC', 'Constr. No Conn.', 2), ('SETTLE', 'Settle', 3), ('VSITE1', 'Virtual site 1', 2), ('VSITE2', 'Virtual site 2', 3), ('VSITE2FD', 'Virtual site 2fd', 3), ('VSITE3', 'Virtual site 3', 4), ('VSITE3FD', 'Virtual site 3fd', 4), ('VSITE3FAD', 'Virtual site 3fad', 4), ('VSITE3OUT', 'Virtual site 3out', 4), ('VSITE4FD', 'Virtual site 4fd', 5), ('VSITE4FDN', 'Virtual site 4fdn', 5), ('VSITEN', 'Virtual site N', 2), ('COM_PULL', 'COM Pull En.', None), ('DENSITYFIT', 'Density fitting', None), ('EQM', 'Quantum En.', None), ('EPOT', 'Potential', None), ('EKIN', 'Kinetic En.', None), ('ETOT', 'Total Energy', None), ('ECONS', 'Conserved En.', None), ('TEMP', 'Temperature', None), ('VTEMP', 'Vir. Temp. (not used)', None), ('PDISPCORR', 'Pres. DC', None), ('PRES', 'Pressure', None), ('DH/DL_CON', 'dH/dl constr.', None), ('DV/DL', 'dVremain/dl', None), ('DK/DL', 'dEkin/dl', None), ('DVC/DL', 'dVcoul/dl', None), ('DVV/DL', 'dVvdw/dl', None), ('DVB/DL', 'dVbonded/dl', None), ('DVR/DL', 'dVrestraint/dl', None), ('DVT/DL', 'dVtemperature/dl', None)]: Interaction types from <gromacs_dir>/gmxlib/ifunc.c

5.28.3. Class definitions for the TPRParser

class MDAnalysis.topology.tpr.obj.Atom(m, q, mB, qB, tp, typeB, ptype, resind, atomnumber)

Create new instance of Atom(m, q, mB, qB, tp, typeB, ptype, resind, atomnumber)

property atomnumber: Alias for field number 8

property m: Alias for field number 0

property mB: Alias for field number 2

property ptype: Alias for field number 6

property q: Alias for field number 1

property qB: Alias for field number 3

property resind: Alias for field number 7

property tp: Alias for field number 4

property typeB: Alias for field number 5

class MDAnalysis.topology.tpr.obj.AtomKind(id, name, type, resid, resname, mass, charge, atomic_number)[source]

property element_symbol

The symbol of the atom element.

The symbol corresponding to the atomic number. If the atomic number is not recognized, which happens if a particle is not really an atom (e.g a coarse-grained particle), an empty string is returned.

class MDAnalysis.topology.tpr.obj.Atoms(atoms, nr, nres, type, typeB, atomnames, resnames)

Create new instance of Atoms(atoms, nr, nres, type, typeB, atomnames, resnames)

property atomnames: Alias for field number 5

property atoms: Alias for field number 0

property nr: Alias for field number 1

property nres: Alias for field number 2

property resnames: Alias for field number 6

property type: Alias for field number 3

property typeB: Alias for field number 4

class MDAnalysis.topology.tpr.obj.Box(size, rel, v)

Create new instance of Box(size, rel, v)

property rel: Alias for field number 1

property size: Alias for field number 0

property v: Alias for field number 2

class MDAnalysis.topology.tpr.obj.Ilist(nr, ik, iatoms)

Create new instance of Ilist(nr, ik, iatoms)

property iatoms: Alias for field number 2

property ik: Alias for field number 1

property nr: Alias for field number 0

class MDAnalysis.topology.tpr.obj.InteractionKind(name, long_name, natoms)[source]

natoms: number of atoms involved in this type of interaction

process(atom_ndx)[source]

class MDAnalysis.topology.tpr.obj.Molblock(molb_type, molb_nmol, molb_natoms_mol, molb_nposres_xA, molb_nposres_xB)

Create new instance of Molblock(molb_type, molb_nmol, molb_natoms_mol, molb_nposres_xA, molb_nposres_xB)

property molb_natoms_mol: Alias for field number 2

property molb_nmol: Alias for field number 1

property molb_nposres_xA: Alias for field number 3

property molb_nposres_xB: Alias for field number 4

property molb_type: Alias for field number 0

class MDAnalysis.topology.tpr.obj.MoleculeKind(name, atomkinds, bonds=None, angles=None, dihe=None, impr=None, donors=None, acceptors=None)[source]

number_of_atoms()[source]

number_of_residues()[source]

remap_angles(atom_start_ndx)[source]

remap_bonds(atom_start_ndx)[source]

remap_dihe(atom_start_ndx)[source]

remap_impr(atom_start_ndx)[source]

class MDAnalysis.topology.tpr.obj.Mtop(nmoltype, moltypes, nmolblock)

Create new instance of Mtop(nmoltype, moltypes, nmolblock)

property moltypes: Alias for field number 1

property nmolblock: Alias for field number 2

property nmoltype: Alias for field number 0

class MDAnalysis.topology.tpr.obj.Params(atnr, ntypes, functype, reppow, fudgeQQ)

Create new instance of Params(atnr, ntypes, functype, reppow, fudgeQQ)

property atnr: Alias for field number 0

property fudgeQQ: Alias for field number 4

property functype: Alias for field number 2

property ntypes: Alias for field number 1

property reppow: Alias for field number 3

class MDAnalysis.topology.tpr.obj.TpxHeader(ver_str, precision, fver, fgen, file_tag, natoms, ngtc, fep_state, lamb, bIr, bTop, bX, bV, bF, bBox, sizeOfTprBody)

Create new instance of TpxHeader(ver_str, precision, fver, fgen, file_tag, natoms, ngtc, fep_state, lamb, bIr, bTop, bX, bV, bF, bBox, sizeOfTprBody)

property bBox: Alias for field number 14

property bF: Alias for field number 13

property bIr: Alias for field number 9

property bTop: Alias for field number 10

property bV: Alias for field number 12

property bX: Alias for field number 11

property fep_state: Alias for field number 7

property fgen: Alias for field number 3

property file_tag: Alias for field number 4

property fver: Alias for field number 2

property lamb: Alias for field number 8

property natoms: Alias for field number 5

property ngtc: Alias for field number 6

property precision: Alias for field number 1

property sizeOfTprBody: Alias for field number 15

property ver_str: Alias for field number 0

5.28.4. Utilities for the TPRParser

Function calling order:

(TPRParser.py call do_mtop)
do_mtop -> do_symtab
        -> do_ffparams -> do_iparams
        -> do_moltype  -> do_atoms  -> do_atom
                                    -> do_resinfo
                       -> do_ilists
                       -> do_block
                       -> do_blocka
        -> do_molblock

Then compose the stuffs in the format MDAnalysis.Universe reads in.

The module also contains the do_inputrec() to read the TPR header with.

class MDAnalysis.topology.tpr.utils.TPXUnpacker(data)[source]

Extend the standard XDR unpacker for the specificity of TPX files.

do_string()[source]

Emulate gmx_fio_do_string

gmx_fio_do_string reads a string from a XDR file. On the contrary to the python unpack_string, gmx_fio_do_string reads the size as an unsigned integer before reading the actual string.

See <gromacs-2016-src>/src/gromacs/fileio/gmx_system_xdr.c:454

unpack_int64()[source]

unpack_uchar()[source]

unpack_uint64()[source]

unpack_ushort()[source]

class MDAnalysis.topology.tpr.utils.TPXUnpacker2020(data)[source]

Unpacker for TPX files from and later than gromacs 2020.

A new implementation of the serializer (InMemorySerializer), introduced in gromacs 2020, changes le meaning of some types in the file body (the header keep using the previous implementation of the serializer).

do_string()[source]: Emulate gmx_fio_do_string

classmethod from_unpacker(unpacker)[source]

unpack_fstring(n)[source]

unpack_uchar()[source]

unpack_ushort()[source]

MDAnalysis.topology.tpr.utils.define_unpack_real(prec, data)[source]: Define an unpack_real method of data based on the float precision used

MDAnalysis.topology.tpr.utils.do_atom(data, fver)[source]

MDAnalysis.topology.tpr.utils.do_atoms(data, symtab, fver)[source]

MDAnalysis.topology.tpr.utils.do_block(data)[source]

MDAnalysis.topology.tpr.utils.do_blocka(data)[source]

MDAnalysis.topology.tpr.utils.do_ffparams(data, fver)[source]

MDAnalysis.topology.tpr.utils.do_harm(data)[source]

MDAnalysis.topology.tpr.utils.do_ilists(data, fver)[source]

MDAnalysis.topology.tpr.utils.do_iparams(data, functypes, fver)[source]

MDAnalysis.topology.tpr.utils.do_molblock(data)[source]

MDAnalysis.topology.tpr.utils.do_moltype(data, symtab, fver)[source]

MDAnalysis.topology.tpr.utils.do_mtop(data, fver, tpr_resid_from_one=False)[source]

MDAnalysis.topology.tpr.utils.do_resinfo(data, symtab, fver, nres)[source]

MDAnalysis.topology.tpr.utils.do_rvec(data)[source]

MDAnalysis.topology.tpr.utils.do_symstr(data, symtab)[source]

MDAnalysis.topology.tpr.utils.do_symtab(data)[source]

MDAnalysis.topology.tpr.utils.extract_box_info(data, fver)[source]

MDAnalysis.topology.tpr.utils.fileVersion_err(fver)[source]

MDAnalysis.topology.tpr.utils.ndo_int(data, n)[source]: mimic of gmx_fio_ndo_real in gromacs

MDAnalysis.topology.tpr.utils.ndo_ivec(data, n)[source]: mimic of gmx_fio_ndo_rvec in gromacs

MDAnalysis.topology.tpr.utils.ndo_real(data, n)[source]: mimic of gmx_fio_ndo_real in gromacs

MDAnalysis.topology.tpr.utils.ndo_rvec(data, n)[source]: mimic of gmx_fio_ndo_rvec in gromacs

MDAnalysis.topology.tpr.utils.read_tpxheader(data)[source]: this function is now compatible with do_tpxheader in tpxio.cpp