def main():
usage = """
usage: %prog [options] <PMF>
Calculate dG_bind
"""
parser = optparse.OptionParser(usage)
parser.add_option("--bmin", dest="bound_min", type="float", default=-35, help="Lower bound for binding [default: %default]")
parser.add_option("--bmax", dest="bound_max", type="float", default=-25, help="Upper bound for binding [default: %default]")
parser.add_option("--umin", dest="unbound_min", type="float", default=-45, help="Lower bound for standard state [default: %default]")
parser.add_option("--umax", dest="unbound_max", type="float", default=-35, help="Upper bound for standard state [default: %default]")
parser.add_option("--autoshift", dest="autoshift", default=True, action="store_false", help="Auto-shift PMF [default: %default]")
parser.add_option("-s", "--std", dest="standard", default=True, action="store_false", help="Do standard state correction [default: %default]")
(options, args) = parser.parse_args()
pmf = process_pmf(args[0], shift=options.autoshift)
correction = 0.0
if options.standard:
correction = dG_bind(pmf, imin=options.unbound_min, imax=options.unbound_max)
print "Correction: %0.2f" % correction
print dG_bind(pmf, imin=options.bound_min, imax=options.bound_max)-correction
def main():
usage = """
usage: %prog [options] <config.ini> <config.ini> ...
Prepare and run WHAM.
"""
parser = optparse.OptionParser(usage)
parser.add_option("-o", "--output-dir", dest="output_dir", default=None, help="Output directory [default: temporary dir]")
parser.add_option("--convergence", dest="convergence", type="int", default=0, help="Analyze convergence over specified block size [default: %default]")
parser.add_option("--error", dest="error", type="int", default=0, help="Analyze error by block averaging [default: %default]")
parser.add_option("--autoshift", dest="autoshift", default=True, action="store_false", help="Auto-shift PMF [default: %default]")
parser.add_option("-t", "--threads", dest="worker_threads", type="int", default=1, help="Number of WHAM threads to use [default: %default]")
parser.add_option("--wham-min", dest="wham_min", type="float", default=-48, help="Minimum bin value for WHAM [default: %default]")
parser.add_option("--wham-max", dest="wham_max", type="float", default=0, help="Maximum bin value for WHAM [default: %default]")
parser.add_option("--wham-bins", dest="wham_bins", type="int", default=200, help="Number of bins for WHAM [default: %default]")
parser.add_option("--wham-tol", dest="wham_tol", type="float", default=0.0001, help="Tolerance for WHAM [default: %default]")
parser.add_option("--wham-temp", dest="wham_temp", type="float", default=315.0, help="Temperature for WHAM [default: %default]")
parser.add_option("--start-index", dest="start_index", type="int", default=0, help="Start index for data selection [default: %default]")
parser.add_option("-d", "--data-file", dest="data_file", default="distances", help="Replica data file name [default: %default]")
(options, args) = parser.parse_args()
for config_file in args:
if not os.path.exists(config_file):
raise Exception("Config file not found at %s\n" % config_file)
# start the wham threads
sys.stderr.write("Starting %d worker threads...\n" % options.worker_threads)
for i in range(options.worker_threads):
t = Thread(target=worker)
t.daemon = True
t.start()
wham_defaults = {'min':options.wham_min, 'max':options.wham_max, 'bins':options.wham_bins, 'tol':options.wham_tol, 'temp':options.wham_temp}
if options.convergence > 0:
# note: ALWAYS COMBINES INPUT CONFIG FILES
# 1) calculate blocks of data in sequential order for each config file
# block size is 10% of the max n
# 2) calculate the PMFs from each block
# 3) calculate some value from each PMF (dG_bind)
# 4) print <block>,<value> to plot
block_size = options.convergence
shift = options.convergence
start_index = 0
done = False
while not done:
end_index = start_index+block_size
sys.stderr.write("Extracting block from %d to %d...\n" % (start_index, end_index))
datasets = []
for config_file in args:
dataset = process_config2(config_file, options, start_index=start_index, end_index=start_index+block_size)
# TODO: this is bad
if not dataset:
done = True
break
else:
datasets.append(dataset)
if not done:
metadata_file = write_datasets(datasets)
wham_dict = wham_defaults.copy()
wham_dict.update({'metafilepath': metadata_file, 'start_index':start_index, 'end_index':end_index})
q.put(wham_dict)
start_index += shift
sys.stderr.write("Waiting for WHAM to complete\n")
q.join()
# process the PMFs
item = outfile_q.get_nowait()
results = {}
while True:
outfile = item['outfile']
#sys.stderr.write("Processing WHAM outfile: %s\n" % outfile)
pmf = process_pmf(outfile, shift=options.autoshift)
# correction = dG_bind(pmf, imin=-32, imax=-22)
correction = 0.0
# print "%d,%0.5f" % (item['start_index'],item['end_index'],dG_bind(pmf, imin=-32, imax=-22)-correction)
results[item['start_index']] = dG_bind(pmf, imin=150, imax=250)-correction
outfile_q.task_done()
try:
item = outfile_q.get_nowait()
except:
sys.stderr.write("All outfiles processed...\n")
break
for k in sorted(results.keys()):
print "%d,%0.5f" % (k,results[k])
elif options.error > 0:
# note: ALWAYS COMBINES INPUT CONFIG FILES
# 1) calculate random blocks of data for each config file
# 2) calculate PMFs for each block
# 3) plot each PMF, get max/min values per bin, stdev per bin
i=0
while i < options.error:
wham_dicts = []
for config_file in args:
sys.stderr.write("Processing config file: %s\n" % config_file)
md = process_config(config_file, options, percent=25, randomize=True, start_index=options.start_index)
md.update(wham_defaults)
wham_dicts.append(md)
combined_dict = combine_metadatas(wham_dicts)
q.put(combined_dict)
i += 1
# Wait for wham to finish
sys.stderr.write("Waiting for WHAM to complete\n")
q.join()
# process the PMFs
error_data = {}
item = outfile_q.get_nowait()
while True:
outfile = item['outfile']
sys.stderr.write("Processing WHAM outfile: %s\n" % outfile)
pmf = process_pmf(outfile, shift=options.autoshift)
for x,y in pmf:
if x not in error_data:
error_data[x] = [y]
else:
error_data[x].append(y)
outfile_q.task_done()
try:
item = outfile_q.get_nowait()
except:
sys.stderr.write("All outfiles processed...\n")
break
# now we have the combined PMF data
(fd, fpath) = tempfile.mkstemp()
outfile = open(fpath, 'w')
sys.stderr.write("Writing errors\n")
outfile.write('BIN,MEAN,SEM,STDEV,MIN,MAX\n')
for key in sorted(error_data.keys()):
d = numpy.array(error_data[key])
sys.stderr.write("%0.2f,%d " % (key, d.size))
sem = numpy.std(d, ddof=1)/numpy.sqrt(d.size)
outfile.write('%f,%f,%f,%f,%f,%f\n' % (key,d.mean(),sem,numpy.std(d),d.min(),d.max()))
outfile.close()
sys.stderr.write("\n"+fpath+"\n")
else:
# standard procedure
wham_dicts = []
for config_file in args:
sys.stderr.write("Processing config file: %s\n" % config_file)
wham_dict = process_config(config_file, options, start_index=options.start_index)
wham_dict.update(wham_defaults)
wham_dicts.append(wham_dict)
combined_dict = combine_metadatas(wham_dicts)
q.put(combined_dict)
# Wait for wham to finish
sys.stderr.write("Waiting for WHAM to complete\n")
q.join()
try:
outfile = outfile_q.get_nowait()
while True:
print outfile
outfile_q.task_done()
outfile = outfile_q.get_nowait()
except:
# queue empty
pass