def main():
    """
    NAME
        quick_hyst.py

    DESCRIPTION
        makes plots of hysteresis data

    SYNTAX
        quick_hyst.py [command line options]

    OPTIONS
        -h prints help message and quits
        -usr USER:   identify user, default is ""
        -f: specify input file, default is magic_measurements.txt
        -spc SPEC: specify specimen name to plot and quit
        -sav save all plots and quit
        -fmt [png,svg,eps,jpg]
    """
    args = sys.argv
    PLT = 1
    plots = 0
    user, meas_file = "", "magic_measurements.txt"
    pltspec = ""
    dir_path = '.'
    fmt = 'png'
    verbose = pmagplotlib.verbose
    version_num = pmag.get_version()
    if '-WD' in args:
        ind = args.index('-WD')
        dir_path = args[ind+1]
    if "-h" in args:
        print(main.__doc__)
        sys.exit()
    if "-usr" in args:
        ind = args.index("-usr")
        user = args[ind+1]
    if '-f' in args:
        ind = args.index("-f")
        meas_file = args[ind+1]
    if '-sav' in args:
        verbose = 0
        plots = 1
    if '-spc' in args:
        ind = args.index("-spc")
        pltspec = args[ind+1]
        verbose = 0
        plots = 1
    if '-fmt' in args:
        ind = args.index("-fmt")
        fmt = args[ind+1]
    meas_file = dir_path+'/'+meas_file
    #
    #
    meas_data, file_type = pmag.magic_read(meas_file)
    if file_type != 'magic_measurements':
        print(main.__doc__)
        print('bad file')
        sys.exit()
    #
    # initialize some variables
    # define figure numbers for hyst,deltaM,DdeltaM curves
    HystRecs, RemRecs = [], []
    HDD = {}
    HDD['hyst'] = 1
    pmagplotlib.plot_init(HDD['hyst'], 5, 5)
    #
    # get list of unique experiment names and specimen names
    #
    experiment_names, sids = [], []
    hyst_data = pmag.get_dictitem(
        meas_data, 'magic_method_codes', 'LP-HYS', 'has')  # get all hysteresis data
    for rec in hyst_data:
        if 'er_synthetic_name' in rec.keys() and rec['er_synthetic_name'] != "":
            rec['er_specimen_name'] = rec['er_synthetic_name']
        if rec['magic_experiment_name'] not in experiment_names:
            experiment_names.append(rec['magic_experiment_name'])
        if rec['er_specimen_name'] not in sids:
            sids.append(rec['er_specimen_name'])
        if 'measurement_temp' not in rec.keys():
            # assume room T measurement unless otherwise specified
            rec['measurement_temp'] = '300'
    #
    k = 0
    if pltspec != "":
        k = sids.index(pltspec)
    intlist = ['measurement_magnitude', 'measurement_magn_moment',
               'measurement_magn_volume', 'measurement_magn_mass']
    while k < len(sids):
        locname, site, sample, synth = '', '', '', ''
        s = sids[k]
        hmeths = []
        if verbose:
            print(s, k+1, 'out of ', len(sids))
    #
    #
        B, M = [], []  # B,M for hysteresis, Bdcd,Mdcd for irm-dcd data
        # get all measurements for this specimen
        spec = pmag.get_dictitem(hyst_data, 'er_specimen_name', s, 'T')
        if 'er_location_name' in spec[0].keys():
            locname = spec[0]['er_location_name']
        if 'er_site_name' in spec[0].keys():
            site = spec[0]['er_site_name']
        if 'er_sample_name' in spec[0].keys():
            sample = spec[0]['er_sample_name']
        if 'er_synthetic_name' in spec[0].keys():
            synth = spec[0]['er_synthetic_name']
        for m in intlist:
            # get all non-blank data for this specimen
            meas_data = pmag.get_dictitem(spec, m, '', 'F')
            if len(meas_data) > 0:
                break
        c = ['k-', 'b-', 'c-', 'g-', 'm-', 'r-', 'y-']
        cnum = 0
        if len(meas_data) > 0:
            Temps = []
            xlab, ylab, title = '', '', ''
            for rec in meas_data:
                if rec['measurement_temp'] not in Temps:
                    Temps.append(rec['measurement_temp'])
            for t in Temps:
                print('working on t: ', t)
                t_data = pmag.get_dictitem(
                    meas_data, 'measurement_temp', t, 'T')
                B, M = [], []
                for rec in t_data:
                    B.append(float(rec['measurement_lab_field_dc']))
                    M.append(float(rec[m]))
    # now plot the hysteresis curve(s)
    #
                if len(B) > 0:
                    B = numpy.array(B)
                    M = numpy.array(M)
                    if t == Temps[-1]:
                        xlab = 'Field (T)'
                        ylab = m
                        title = 'Hysteresis: '+s
                    if t == Temps[0]:
                        pmagplotlib.clearFIG(HDD['hyst'])
                    pmagplotlib.plot_xy(
                        HDD['hyst'], B, M, sym=c[cnum], xlab=xlab, ylab=ylab, title=title)
                    pmagplotlib.plot_xy(HDD['hyst'], [
                                        1.1*B.min(), 1.1*B.max()], [0, 0], sym='k-', xlab=xlab, ylab=ylab, title=title)
                    pmagplotlib.plot_xy(HDD['hyst'], [0, 0], [
                                        1.1*M.min(), 1.1*M.max()], sym='k-', xlab=xlab, ylab=ylab, title=title)
                    if verbose:
                        pmagplotlib.draw_figs(HDD)
                    cnum += 1
                    if cnum == len(c):
                        cnum = 0
    #
        files = {}
        if plots:
            if pltspec != "":
                s = pltspec
            files = {}
            for key in HDD.keys():
                if pmagplotlib.isServer:  # use server plot naming convention
                    if synth == '':
                        filename = "LO:_"+locname+'_SI:_'+site + \
                            '_SA:_'+sample+'_SP:_'+s+'_TY:_'+key+'_.'+fmt
                    else:
                        filename = 'SY:_'+synth+'_TY:_'+key+'_.'+fmt
                    files[key] = filename
                else:  # use more readable plot naming convention
                    if synth == '':
                        filename = ''
                        for item in [locname, site, sample, s, key]:
                            if item:
                                item = item.replace(' ', '_')
                                filename += item + '_'
                        if filename.endswith('_'):
                            filename = filename[:-1]
                        filename += ".{}".format(fmt)
                    else:
                        filename = synth+'_'+key+'.fmt'
                    files[key] = filename

            pmagplotlib.save_plots(HDD, files)
            if pltspec != "":
                sys.exit()
        if verbose:
            pmagplotlib.draw_figs(HDD)
            ans = raw_input(
                "S[a]ve plots, [s]pecimen name, [q]uit, <return> to continue\n ")
            if ans == "a":
                files = {}
                for key in HDD.keys():
                    if pmagplotlib.isServer:
                        print('server')
                        files[key] = "LO:_"+locname+'_SI:_'+site + \
                            '_SA:_'+sample+'_SP:_'+s+'_TY:_'+key+'_.'+fmt
                    else:
                        print('not server')
                        filename = ''
                        for item in [locname, site, sample, s, key]:
                            if item:
                                item = item.replace(' ', '_')
                                filename += item + '_'
                        if filename.endswith('_'):
                            filename = filename[:-1]
                        filename += ".{}".format(fmt)
                        files[key] = filename
                print('files', files)
                pmagplotlib.save_plots(HDD, files)
            if ans == '':
                k += 1
            if ans == "p":
                del HystRecs[-1]
                k -= 1
            if ans == 'q':
                print("Good bye")
                sys.exit()
            if ans == 's':
                keepon = 1
                specimen = raw_input(
                    'Enter desired specimen name (or first part there of): ')
                while keepon == 1:
                    try:
                        k = sids.index(specimen)
                        keepon = 0
                    except:
                        tmplist = []
                        for qq in range(len(sids)):
                            if specimen in sids[qq]:
                                tmplist.append(sids[qq])
                        print(specimen, " not found, but this was: ")
                        print(tmplist)
                        specimen = raw_input('Select one or try again\n ')
                        k = sids.index(specimen)
        else:
            k += 1
        if len(B) == 0:
            if verbose:
                print('skipping this one - no hysteresis data')
            k += 1
NAME
        quick_hyst.py

    DESCRIPTION
        makes plots of hysteresis data

    SYNTAX
        quick_hyst.py [command line options]

    OPTIONS
        -h prints help message and quits
        -usr USER:   identify user, default is ""
        -f: specify input file, default is magic_measurements.txt
        -spc SPEC: specify specimen name to plot and quit
        -sav save all plots and quit
        -fmt [png,svg,eps,jpg]