1 # Copyright (C) 2009-2010 W. Trevor King <wking@drexel.edu>
3 # This program is free software: you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation, either version 3 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program. If not, see <http://www.gnu.org/licenses/>.
16 # The author may be contacted at <wking@drexel.edu> on the Internet, or
17 # write to Trevor King, Drudge's University, Physics Dept., 3141 Chestnut St.,
18 # Philadelphia PA 19104, USA.
22 from .histogram import Histogram
23 from .manager import MANAGERS, get_manager
24 from .sawsim import SawsimRunner
27 def sawsim_histogram(sawsim_runner, param_string, N=400, bin_edges=None):
28 """Run `N` simulations and return a histogram with `bin_edges`.
30 If `bin_edges == None`, return a numpy array of all unfolding
34 for run in sawsim_runner(param_string=param_string, N=N):
35 events.extend([event.force for event in run
36 if (event.initial_state == 'folded'
37 and event.final_state == 'unfolded')])
38 events = numpy.array(events)
42 h.from_data(events, bin_edges)
48 >>> main(['--sawsim', 'bin/sawsim', '-N', '2'])
49 ... # doctest: +ELLIPSIS, +NORMALIZE_WHITESPACE
50 #Force (N) Unfolding events
53 from optparse import OptionParser
61 usage = '%prog [options]'
63 'Generate an unfolding force histogram from a series of `sawsim`',
66 parser = OptionParser(usage, epilog=epilog)
67 for option in sr.optparse_options:
68 parser.add_option(option)
69 parser.add_option('-w', '--bin-width', dest='bin_width',
70 metavar='FLOAT', type='float',
71 help='Histogram bin width in newtons (%default).',
74 options,args = parser.parse_args(argv)
76 sr_call_params = sr.initialize_from_options(options)
78 events = sawsim_histogram(
79 sawsim_runner=sr, bin_edges=None, **sr_call_params)
83 if options.bin_width == None:
84 sys.stdout.write('# Unfolding force (N)\n')
85 events.tofile(sys.stdout, sep='\n')
86 sys.stdout.write('\n')
89 h.from_data(events, bin_edges=h.calculate_bin_edges(
90 events, options.bin_width))
91 h.headings = ['Force (N)', 'Unfolding events']
92 h.to_stream(sys.stdout)