Example #1
0
    def write_script(self):

        print 'Writing the lammps script'
        _mainpage_ = get_entriesvalue(self.s_entry_c)

        _flag_ = True  # data ok flag

        _entries_ = [
            'float', 'int', 'int', 'float:', 'float', 'int', 'float:', 'float',
            'float:', 'float'
        ]
        _flag_ *= self.check_datafile(bool)
        _flag_ *= min(check_vars(_mainpage_[1:], _entries_))

        if _flag_:
            self._container_['mainpage'] = _mainpage_
            _script_setup_ = [
                _mainpage_, self._container_['advanced'][0],
                self._container_['restrain']
            ]
            self.master._script_ = self._container_

            _flag_ = write_lammps_input(_script_setup_, self._convertdata_)

            if _flag_:
                print_dec_g('Lammps script done!')
                self.master.swapbody(3)
    def getdata_and_convert(self):

        _autoload_ = self.objt_c[0]
        if not _autoload_:
            pop_wrg_1('Proceeding without autoload.\nThis means that any ' +
                      'internal address to files that are not specified ' +
                      'as GUI input are going to be ignored.')
        if self.get_entriesvalues():

            data_cont = self.master._convert_['setup']
            root_folder = '/'.join(data_cont[1].split('/')[:-1] + [''])
            print('Root folder: {}'.format(root_folder))

            sim_data, _flags_ = extract_gromacs_data(data_cont[1:-1],
                                                     _autoload_)
            flag_done_, _sidemol_ = _flags_

            config = [data_cont[-1], _sidemol_, _autoload_, root_folder]
            if flag_done_:
                try:
                    flag_done_, data_fnam = write_lammps_data(
                        sim_data, 'data.gro2lam', config)

                except KeyError as Err:
                    err_str = ''
                    for er in Err.args:
                        err_str += er + ' '
                    pop_err_1(
                        'There are missing or incomplete coefficients in' +
                        ' your input files related to: ' + err_str)
                    flag_done_ = False
                except Exception as Exc:
                    pop_err_1(
                        'There are inconsistencies in your input files\n' +
                        Exc.args[0])
                    flag_done_ = False

            if flag_done_:
                print_dec_g('Data file generated as "data.gro2lam"')

                self._convertdata_ = sim_data
                self._convertdata_['filename'] = data_fnam
                self._convertdata_['config'] = config

                # Returning the values
                self.master._convertdata_ = self._convertdata_

                # to ensure freshness of our dependant values
                self.master._script_['advanced'] = []
                self.master._script_['restrain'] = []

                self.master.swapbody(2)

        else:
            pop_wrg_1('The setup needs some further improvements' +
                      'to be runed. Please check your inputs')
Example #3
0
 def getdata_and_convert(self):
     _solvatedinfo_ = self.master._convert_['solvation']
     
     if ( self.objt_c[-1].get() and _solvatedinfo_ == []):
         pop_wrg_1( 'First perform the solvation configuration.'
                   + ' You can do it pressing in solvation settings gears',
                   _i_=0
                  )
         self.solv_b.invoke()
         
     elif self.get_entriesvalues():
         
         data_cont = self.master._convert_['setup']
         config = data_cont[-2:]+[0]
         
         sim_data, flag_done_ = extract_gromacs_data(data_cont[:-2],
                                                     _solvatedinfo_,
                                                     config[1:])
         if flag_done_:
             flag_done_ = write_lammps_data( sim_data, 'data.gro2lam',
                                            config
                                           )
         
         if flag_done_:
             print_dec_g( 'Data file generated as "data.gro2lam"' )
             
             self._convertdata_ = sim_data
             self._convertdata_['config'] = config
             
             # Returning the values
             self.master._convertdata_ = self._convertdata_
             self.master.swapbody(2)
             
     else:
         pop_wrg_1('The setup needs some further improvements'
                     +'to be runed. Please check your inputs')
Example #4
0
def write_lammps_data(_topodata_, data_name, _config_):
    ''' Write a lammps data file'''
    print_dec_g('Writing Lammps data file...')
    ####---------------  Unpacking data  ----------------####
    atomstyle, _, _ = _config_
    atsty = ['atomic', 'angle', 'full', 'charge', 'bond', 'molecular']
    style_str = '####-------  ATOM STYLE < {} >  --------####'
    _flag_ = False
    if atomstyle in atsty:
        nam = ''.join([chr(ord(l) - 32) for l in atomstyle])
        print_dec_g(style_str.format(nam))
        _content_ = write_lammps_data_all(_topodata_, data_name, _config_)
        _flag_ = True
    else:  #if atomstyle == 'Angle':
        _content_ = ''
        exit(('Error 037!!  -  Atom style {} ' +
              'not implemented yet').format(atomstyle))

    write_file(data_name, _content_)

    print_dec_g('Successful writing!!')

    return _flag_
Example #5
0
 def config_solvation( self):
         
     title_txt = ' '*15+'Input Water name'
     instructions = 'Enter the atom tag letters of:'
     askfor = ['O in the non bonded file',
               'H in the non bonded file',
               'O in the .gro file',
               'H in the .gro file',
               'H - O partial charge'
               #'Na+ in the .gro file (if are present)',
               #'Cl- in the .gro file (if are present)'
              ]
     _solvatedinfo_ = self.master._convert_['solvation']
     
     if _solvatedinfo_ ==  []:
         defaultanswer = ['opls_116','opls_117','OW','HW1, HW2','0.4238'
                         #,'Na','Cl'
                        ]
     else:
         defaultanswer = _solvatedinfo_
         
     self.solv_b.config(bg = 'gray40', width = 45) #cyan')
     self.master._aux_ = []
     
     pop = PromptPopUp(master = self.master,
                       title = title_txt,
                       briefing = instructions, 
                       entries_txt = askfor, 
                       entries_val = defaultanswer
                      )
     
     pop.wait_window()
     
     if self.master._aux_ <> [] and self.get_entriesvalues():
         _app_aux_ = self.master._aux_
         #============ Check inputs =================
         _flag_ = 1
         nb_Ox, nbHy, gro_Oxs, gro_Hys, pch= _app_aux_
         _gro_f, _, _, _nbn_f, _, _, _= self.master._convert_['setup']
         _flags = check_in_file( _nbn_f, nb_Ox, nbHy)
         print ([nb_Ox, nbHy])
         list_aux = [Ox.strip(' ') for Ox in gro_Oxs.split(',')]
         list_aux += [Ox.strip(' ') for Ox in gro_Hys.split(',')]
         _flags += check_in_file( _gro_f, *list_aux)
         print (list_aux)
         
         try:
             x = float(pch)
             if -10<x<10:
                 _flags += [1]
                 partial_charges = 'Partial charges for H: {} and for O: {}'
                 print partial_charges.format( x, x*-2)
             else:
                 _flags += [0]
         except:
             _flags += [0]
         list_aux = [nb_Ox, nbHy] + list_aux
         for v in range(len(_flags)):
             err_txt = ''
             if not _flags[v] and v <> (len(_flags)-1):
                 filename = _nbn_f
                 if v>1:
                     filename = _gro_f
                 err_txt = 'Atom tag {} not found in {}'
                 if '/' in filename:
                     filename = filename.split('/')[-1]
                 err_txt = err_txt.format( list_aux[v], filename)
                 _flag_*=0
             
             elif not _flags[v]:
                 err_txt = 'Non valid partial charge {}'.format( pch)
                 _flag_*=0
                 
             if err_txt<>'':
                 pop_err_1(err_txt+'\nSetup not saved')
         #============       Done!  =================
         if _flag_:
             self.master._convert_['solvation'] = _app_aux_
             print_dec_g('Solvation setup saved!')
             #self.solv_b.focus()
     self.solv_b.config(bg = 'lightgrey', width = 28)
Example #6
0
    def config_restrain(self):

        title_txt = ' ' * 28 + '+ Restrain Goups'
        instructions = 'Select the group to restrain'

        #============ grouping  ================
        max_index = self.check_datafile()

        if max_index:

            _defvals_ = self._container_['restrain']
            if _defvals_ == []:

                g_names = ['all_group']
                d_ids = ['{}:{}'.format(1, max_index)]
                kxyz_c = ['1:xyz']
                rest_ens = ['1-2']  #restrained_ensembles
                ck_init = [0]
                second_c = None

                if self._convertdata_ <> None:
                    _mol_niifi_ = self._convertdata_['atomsdata'][1]
                    for mt in range(len(_mol_niifi_)):
                        g_names.append(_mol_niifi_[mt][0])
                        d_ids.append('{}:{}'.format(*_mol_niifi_[mt][1:]))
                        kxyz_c += ['1:xyz']
                        rest_ens += ['1-2']
                        ck_init += [0]

            else:
                g_names, d_ids, kxyz_c, rest_ens, ck_init = _defvals_[0]
                #print g_names,'\n', d_ids,'\n', kxyz_c,'\n', ck_init
                if _defvals_[1] <> None:
                    second_c = _defvals_[1]
                else:
                    second_c = None

            self.resb.config(bg='gray70')  #, width = 45) #cyan')
            self.master._aux_ = []

            pop = PromptPopUp_wck(
                master=self.master,
                title=title_txt,
                briefing=instructions,
                entries_txt=g_names,
                entries_val=kxyz_c,
                width=530,
                #height = 365,
                range_id=d_ids,
                res_ens=rest_ens,
                chck_init=ck_init,
                extra_but=second_c,
            )

            pop.wait_window()

            if self.master._aux_ <> []:
                sim_len = 0
                for x in self._container_['advanced'][0][-2].split('-'):
                    if x.strip(' ') <> 'R':
                        sim_len += 1
                _res_flag_ = [[], []]
                _restrain_ = self.master._aux_[:]
                _, _d_ids, _kxyz_c, _runs_c, _res_flag_[0] = _restrain_[0]

                if _restrain_[1] <> None:
                    _, au2, au3, au4, au5 = _restrain_[1][:]
                    _restrain_aux = _d_ids + au2 + _kxyz_c + au3 + _runs_c + au4
                    _res_flag_[1] = au5
                else:
                    _restrain_aux = _d_ids + _kxyz_c + _runs_c
                _multi_ = len(_restrain_aux) / 3
                _entries_ = ([['<int:int<', 1, max_index]] * _multi_ +
                             ['float:xyz'] * _multi_ +
                             [['<int-x-int<:0', 1, sim_len]] * _multi_)

                _aux_ = check_vars(_restrain_aux, _entries_,
                                   'Restrain groups not saved!')
                #print _aux_
                _flag_ = min(_aux_)
                if _flag_:

                    if max(max(_res_flag_)):
                        self._container_['restrain'] = _restrain_
                        print_dec_g('Restrain data saved')
                    else:
                        print('Creating 0 groups, Restraining 0 atoms')
            self.resb.config(bg='gray86')  #, width = 45)
Example #7
0
    def further_config_script(self):

        defvals = []
        title_txt = ' ' * 3 + '+ Simulation Parameters'
        instructions = 'Input further simulation parameters'
        askfor = [
            'Thermo output every  [#ts]',
            'Atom mapping',
            'Pairwise interactions',
            "L-J/Buck rcutoff  [" + u'\u00c5' + "]",
            "Coulomb rcutoff  [" + u'\u00c5' + "]",
            "Neighbor skin distance  [" + u'\u00c5' + "]",
            'Long-range solver',
            'Long-range relative error',
            'Interaction 1-2:1-3:1-4',
            'Neighbor delay  [#ts]',
            'Neighbor update  [#ts]',
            'Pressure control',
            'Force mixing rule',
            'Simulation order',
            'Velocity creation Temp  [K]',
        ]

        _pair_style_ = [
            'lj/cut/coul/long',
            'lj/cut/coul/cut',
            'lj/cut',
            'buck/coul/long',
            'buck',
            'buck/coul/cut',
            #'lj/cut/tip4p/cut', 'lj/cut/tip4p/long',
            #'lj/gromacs', 'lj/gromacs/coul/gromacs',
            'zero',
            'none'
        ]

        if self._convertdata_ <> None:
            buckorlj = int(self._convertdata_['defaults'][0])
            if buckorlj == 1:
                _pair_style_ = _pair_style_[:3] + _pair_style_[-2:]
            else:
                _pair_style_ = _pair_style_[3:]
                self._container_['advanced'][0][2] = _pair_style_[3]

        _kspace_ = [
            'pppm',
            'pppm/cg',
            'ewald',
            'pppm/disp',
            'ewald/disp',
            #'pppm/tip4p', 'pppm/disp/tip4p'
        ]

        _comb_rule_ = ['No', 'geometric', 'arithmetic', 'sixthpower']

        self._container_['advanced'][1] = [
            '', ['array', 'hash'], _pair_style_, '', '', '', _kspace_, '', '',
            '', '', ['aniso', 'iso', 'tri'], _comb_rule_, '', ''
        ]
        _defvals_ = []

        for _ad_ in range(len(self._container_['advanced'][0])):
            if self._container_['advanced'][1][_ad_] <> '':
                _def_ = self._container_['advanced'][0][_ad_]
                _dfli_ = self._container_['advanced'][1][_ad_]
                _defvals_.append([_def_, _dfli_])
            else:
                _defvals_.append(self._container_['advanced'][0][_ad_])

        self.fcb.config(bg='gray70')  #, width = 155) #cyan')
        self.master._aux_ = []
        pop = PromptPopUp(master=self.master,
                          title=title_txt,
                          briefing=instructions,
                          entries_txt=askfor,
                          entries_val=_defvals_,
                          width=400,
                          height=565)

        pop.wait_window()

        if self.master._aux_ <> []:
            _advanced_ = self.master._aux_

            _entries_ = [
                'int', '', '', 'float', 'float', 'float', '', 'float',
                'float::', 'int', 'int', '', '',
                [list, '-', 'NVE', 'NVT', 'NPT', 'R'], 'float'
            ]
            _flag_ = min(
                check_vars(_advanced_, _entries_,
                           'Advanced settings not saved!'))
            if _flag_:
                self._container_['advanced'][0] = _advanced_
                print_dec_g('Advanced settings saved')
        self.fcb.config(bg='gray86')  #, width = 145)
Example #8
0
 def further_config_script( self ):
     ''' Section for advaced settings
     
     '''
     pop_wrg_1('Advanced settings!\nChanging these parameters could result'
               +' in a different simulation than the base one')
     defvals = []
     title_txt = ' '*3+'+ Simulation Parameters'
     instructions = 'Input further simulation parameters'
     askfor = ['Thermo output every  [#ts]',
               'Atom mapping',
               'Pairwise interactions',
               "L-J/Buck rcutoff  ["+u'\u00c5'+"]",
               "Coulomb rcutoff  ["+u'\u00c5'+"]",
               "Neighbor skin distance  ["+u'\u00c5'+"]",
               'Long-range solver',
               'Long-range relative error',
               'L-J interaction 1-2:1-3:1-4',
               'Coul interaction 1-2:1-3:1-4',
               'Neighbor delay  [#ts]', 
               'Neighbor update  [#ts]',
               'Pressure control',
               'Force mixing rule',
               
               'Velocity creation Temp  [K]',
               
               'Energy minimization tolerance',
               'Simulation order',
               '---',
               'Shake tolerance',
               'Shake bonds [b#]',
               'Shake angles [a#]',
               
              ]
                     
     _pair_style_ = ['lj/cut/coul/long','lj/cut/coul/cut', 'lj/cut',
                     'lj/charmm/coul/long',
                     'buck/coul/long', 'buck', 'buck/coul/cut',
                     #'lj/cut/tip4p/cut', 'lj/cut/tip4p/long',
                     #'lj/gromacs', 'lj/gromacs/coul/gromacs',
                     #, 'none',
                     'zero']
     
     if self._convertdata_ <> None:
         buckorlj = int( self._convertdata_['defaults'][0])
         if buckorlj == 1:
             _pair_style_ = _pair_style_[ :3] + [_pair_style_[ -1]]
         else:
             _pair_style_ = _pair_style_[ 3:]
             
     _kspace_ = ['pppm', 'pppm/cg', 'ewald', 'pppm/disp', 'ewald/disp',
               #'pppm/tip4p', 'pppm/disp/tip4p'
                ]
     
     _comb_rule_ = ['No','geometric', 'arithmetic', 'sixthpower']
     
     #  ['advanced'][1] in case of drop down lists, to show the other cases 
     self._container_['advanced'][1] = [ '', ['array', 'hash'], 
                                         _pair_style_,
                                        '','','', _kspace_,
                                        '', '', '', '', '',
                                        ['aniso', 'iso', 'tri'],
                                         _comb_rule_, '','','',
                                        '', '', ''
                                       ]
     _defvals_ = []
     
     for _ad_ in range(len(self._container_['advanced'][0])):
         if self._container_['advanced'][1][_ad_] <> '':
             _def_ = self._container_['advanced'][0][_ad_]
             _dfli_ = self._container_['advanced'][1][_ad_]
             _defvals_.append([ _def_, _dfli_])
         else:
             _defvals_.append(self._container_['advanced'][0][_ad_])
             
     self.fcb.config(bg = 'gray70')#, width = 155) #cyan')
     self.master._aux_ = []
     pop = PromptPopUp(master = self.master,
                       title = title_txt,
                       briefing = instructions, 
                       entries_txt = askfor, 
                       entries_val = _defvals_ ,
                       width = 400,
                       height = 665
                      )
     
     pop.wait_window()
     
     _, bnty_len, anty_len = self.check_datafile()
     print bnty_len, anty_len
     if self.master._aux_ <> []:
         _advanced_ = self.master._aux_
         
         _entries_ = [ 'int', '', '', 'float', 'float', 'float', '',
                      'float', 
                      ['<float::<', 0.0, 1.0],['<float::<', 0.0, 1.0],
                      'int', 'int', '', '',
                      'float', 'float',[list, '-','NVE','NVT','NPT','R','M']
                      ,'float',
                      ['<int-x-int<:0', 1, bnty_len],
                      ['<int-x-int<:0', 1, anty_len]
                      ]
         _flag_ = min( check_vars( _advanced_, _entries_,
                                  'Advanced settings not saved!'))
         if _flag_:
             self._container_['advanced'][0] = _advanced_
             print_dec_g('Advanced settings saved')
     self.fcb.config(bg = 'gray86')#, width = 145)
Example #9
0
def write_lammps_input(_simconfig_, _topodata_=None, in_name='in.gro2lam'):
    ''' _simconfig_ contains the data gathered from the gui
        _topodata_ comes from the converted gromacs file
        in_name is intended as name for the input'''

    #===================================================
    '''====   Gathering and ordering the data   ====='''
    #===================================================

    #===================================================
    ####-----------    SIM RAW CONFIG       --------####

    _simconfig_ = _simconfig_[:]
    (data_file, timestep, nve_steps, nvt_steps, nvt_tss, nvt_tdamp, npt_steps,
     npt_pss, npt_pdamp, npt_tss, npt_tdamp) = _simconfig_[0]

    nvt_tstart, nvt_tend = nvt_tss.split(':')
    npt_pstart, npt_pend = npt_pss.split(':')
    npt_tstart, npt_tend = npt_tss.split(':')

    #print (data_file, timestep, nve_steps, nvt_steps, nvt_tstart, nvt_tend,
    #nvt_tdamp, npt_steps, npt_pstart, npt_pend, npt_tdamp, npt_tdamp,
    #npt_ystart, npt_yend)

    i = 5
    thermo, atommap, pairwiseint, lj_rcutoff, c_rcutoff = _simconfig_[1][:i]
    neighbordistance, lrsolver, lrerror, in12_13_14 = _simconfig_[1][i:i + 4]
    neighbordelay, neighborupdate, npt_kind = _simconfig_[1][i + 4:i + 7]
    f_comb_rule, _order_, T_init_vel = _simconfig_[1][i + 7:]

    #===================================================
    ####------------    RESTRAIN DATA       --------####

    rest_line = ''
    group_lines = ''
    torestrain = []
    ens_af = []
    if _simconfig_[2] <> []:
        g_names, g_aids, k_xyz_c, runs_c, ch_init = _simconfig_[2][0][:]
        if _simconfig_[2][1] <> None:
            ####### ------------------------------------ Super interesante!!
            ##              este es uno de esos casos donde no es posible
            ##              utilizar += a pesar de desligar con [:] ...

            aux1, aux2, aux3, aux4, aux5 = _simconfig_[2][1][:]
            g_names = g_names + aux1
            g_aids = g_aids + aux2
            k_xyz_c = k_xyz_c + aux3
            runs_c = runs_c + aux4
            ch_init = ch_init + aux5
        print '\n'
        for re in range(len(g_names)):
            if ch_init[re] == 1:
                print 'Restraining group ' + g_names[re] + ' in ' + runs_c[re]
                groupinfo = [g_names[re], g_aids[re]]
                group_lines += 'group {} id {}\n'.format(*groupinfo)

                if runs_c[re] not in ['', 'No', 'no', '0']:
                    ens = [int(x) - 1 for x in runs_c[re].split('-')]
                    torestrain.append([g_names[re], k_xyz_c[re], ens])

                    for e in ens:
                        if e not in ens_af:
                            ens_af.append(e)
        if group_lines <> '':
            group_lines += '\n'

    mix_value = {
        '1': 'geometric',
        '2': 'arithmetic',
        '3': 'geometric',
        '4': 'sixthpower'
    }

    #for mt in range(len( _mtype_)):
    #group_lines += 'group {} id {}:{}\n'.format(*_mtype_[mt])
    _asty_d_ = {
        'atomic': 1,
        'charge': 2,
        'bond': 3,
        'angle': 4,
        'full': 5,
        'molecular': 5
    }

    #===================================================
    ####------------      TOPO DATA         --------####

    print '\n' + data_file + '\n'
    if _topodata_ <> None:
        atomstyle, _solvated_, _parametric_ = _topodata_['config']

        buckorlj, comb_rule, _, f_LJ, _ = _topodata_['defaults']

    else:
        print 'non _topodata_'
        atomstyle = 'full'
        comb_rule = ''
        buckorlj = 0

    if f_comb_rule in mix_value.values():
        mix_value_s = ' mix ' + f_comb_rule
    elif f_comb_rule == 'from_gromacs' and _topodata_ <> None:
        mix_value_s = ' mix ' + mix_value[comb_rule]
    else:
        print 'Using default mixing rule'
        mix_value_s = ''

    #===================================================
    '''=======    Writing Lammps data file    ======='''
    #===================================================
    _dtxt_ = '\n' + '#INIT\n' + 'units real\n' + 'boundary p p p\n' + 'atom_style '
    # as I understand lammps default is 3
    #_dtxt_+= '%s %d\n'.format('dimension',dimension)
    _dtxt_ += atomstyle + '\n'
    if atomstyle not in ['full', 'charge]']:  # no charges
        if 'coul' in pairwiseint:
            pairwiseint = pairwiseint.split('/coul')[0]
        if 'none' in pairwiseint:
            lj_rcutoff = ''
        c_rcutoff = ''
    elif 'coul' not in pairwiseint:
        c_rcutoff = ''

    _dtxt_ += '\natom_modify map {}\n'.format(atommap)
    #===================================================
    ####------------  SYSTEM CONFIGURATION  --------####

    _dsc_txt = ['pair_style {} {}'.format(pairwiseint, lj_rcutoff)]
    _dsc_txt.append(' {}\n'.format(c_rcutoff))
    _dsc_txt.append('bond_style harmonic\n')
    _dsc_txt.append('angle_style harmonic\n')
    _dsc_txt.append('dihedral_style charmm\n')
    _dtxt_ += ''.join(_dsc_txt[:_asty_d_[atomstyle]]) + '\n'

    if 'data' in data_file:
        _dtxt_ += 'read_data {}\n'.format(data_file)
    else:
        _dtxt_ += 'read_restart {}\n'.format(data_file)

    #===================================================
    ####--------------   NEIGHBOR LIST   -----------####
    _dtxt_ += '\nneighbor {} bin\n'.format(neighbordistance)

    if lrsolver <> '' and atomstyle in ['full', 'charge']:
        if '/coul/long' in pairwiseint:
            _dtxt_ += 'kspace_style {} {}\n'.format(lrsolver, lrerror)
    _dtxt_ += 'pair_modify shift no tail yes' + mix_value_s + '\n'

    _dtxt_ += 'special_bonds lj/coul {} {} {}\n'.format(*in12_13_14.split(':'))

    _aux_s_ = 'neigh_modify every {} delay {} check yes\n\n'
    _dtxt_ += _aux_s_.format(neighborupdate, neighbordelay)

    #===================================================
    ####---------------  TIMESTEP   ----------------####
    _dtxt_ += 'timestep {}\n\n\n'.format(timestep)
    _dtxt_ += 'thermo {}\n'.format(thermo)
    _dtxt_ += ('thermo_style custom step temp press vol ' +
               'epair emol etotal enthalpy' + '\n\n')

    #===================================================
    ####--------------  Init VELOCITIES   ----------####
    aux_vel_str = 'velocity all create {} 1234567 rot yes dist gaussian\n\n'
    _dtxt_ += aux_vel_str.format(T_init_vel)

    #===================================================
    ####----------------   GROUPS   ----------------####
    _dtxt_ += group_lines

    #===================================================
    ####---------------   SIMULATION    ------------####
    ensembles = _order_.split('-')
    curr_time = 0
    timestep = float(timestep)

    tounfix = [[], []]
    _dtxt_ += '\n'
    for en in range(len(ensembles)):

        if ens_af <> [] and en in ens_af:  #       RESTRAIN

            for re in range(len(torestrain)):
                if en in torestrain[re][2]:

                    if en - 1 not in torestrain[re][2]:
                        spring_f = 'fix rest_{0}_{1} {0} spring/self {2} {3}\n'
                        k, xyz = torestrain[re][1].split(':')
                        _dtxt_ += spring_f.format(torestrain[re][0], en + 1, k,
                                                  xyz)
                        unr = 0 + en
                        while unr + 1 in torestrain[re][2]:
                            unr += 1

                        name_2uf = 'rest_{0}_{1}'.format(
                            torestrain[re][0], en + 1)
                        tounfix = [tounfix[0] + [unr], tounfix[1] + [name_2uf]]
            _dtxt_ += '\n'

        if ensembles[en] == 'NVE' and nve_steps <> '' and nve_steps.isdigit():
            steps = int(nve_steps)
            nve_frm = 'fix nve_name1 all nve\nrun {}\nunfix nve_name1\n\n'
            _dtxt_ += nve_frm.format(steps)
            curr_time += steps * timestep

        elif ensembles[en] == 'NPT' and npt_steps <> '' and npt_steps.isdigit(
        ):
            steps = int(npt_steps)
            npt_frm = 'fix npt_name1 all npt temp {} {} {} {} {} {} {}\n'
            _dtxt_ += npt_frm.format(npt_tstart, npt_tend, npt_tdamp, npt_kind,
                                     npt_pstart, npt_pend, npt_pdamp)
            _dtxt_ += 'run {}\nunfix npt_name1\n\n'.format(steps)
            curr_time += steps * timestep

        elif ensembles[en] == 'NVT' and nvt_steps <> '' and nvt_steps.isdigit(
        ):
            steps = int(nvt_steps)
            nvt_frm = 'fix nvt_name1 all nvt temp {} {} {}\n'
            _dtxt_ += nvt_frm.format(nvt_tstart, nvt_tend, nvt_tdamp)
            _dtxt_ += 'run {}\nunfix nvt_name1\n\n'.format(steps)
            curr_time += steps * timestep

        elif ensembles[en] == 'R':
            restart_txt = '\nwrite_restart restart.g2l_{}fs\n'
            _dtxt_ += restart_txt.format(int(curr_time))

        if tounfix <> [[], []] and en in tounfix[0]:  #       UNFIX RESTRAIN
            for unf in range(len(tounfix[0])):
                if tounfix[0][unf] == en:
                    _dtxt_ += 'unfix ' + tounfix[1][unf] + '\n'

    print('Writing Lammps input script...')

    write_file(in_name, _dtxt_)
    print_dec_g('Successful writing!!')

    #-------------------- here would be optimum some further check
    return True