3 # calibcant - tools for thermally calibrating AFM cantilevers
5 # Copyright (C) 2007,2008, William Trevor King
7 # This program is free software; you can redistribute it and/or
8 # modify it under the terms of the GNU General Public License as
9 # published by the Free Software Foundation; either version 3 of the
10 # License, or (at your option) any later version.
12 # This program is distributed in the hope that it will be useful, but
13 # WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
15 # See the GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program; if not, write to the Free Software
19 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
22 # The author may be contacted at <wking@drexel.edu> on the Internet, or
23 # write to Trevor King, Drexel University, Physics Dept., 3141 Chestnut St.,
24 # Philadelphia PA 19104, USA.
27 Separate the more general T_analyze() from the other T_*()
28 functions in calibcant. Also provide a command line interface
29 for analyzing data acquired through other workflows.
31 The relevant physical quantities are :
32 T Temperature at which thermal vibration measurements were aquired
36 import common # common module for the calibcant package
37 import config # config module for the calibcant package
43 "Convert Celsius -> Kelvin."
44 return celsius + 273.15
46 def T_analyze(T, convert_to_K=C_to_K) :
48 Not much to do here, just convert to Kelvin.
49 Uses C_to_K (defined above) by default.
51 try : # if T is an array, convert element by element
52 for i in range(len(T)) :
53 T[i] = convert_to_K(T[i])
54 except TypeError : # otherwise, make an array from a single T
58 def T_save(T, log_dir=None) :
60 Save either a single T (if you are crazy :p),
61 or an array of them (more reasonable)
63 T = numpy.array(T, dtype=numpy.float)
65 log = data_logger.data_log(log_dir, noclobber_logsubdir=False,
67 log.write_binary(T.tostring())
69 log = data_logger.data_log(LOG_DIR, noclobber_logsubdir=False,
71 log.write_binary(T.tostring())
73 def T_load(datafile=None) :
75 Load the saved T array (possibly of length 1), and return it. If
76 datafile == None, return an array of one config.DEFAULT_TEMP
80 return numpy.array([config.DEFAULT_TEMP], dtype=numpy.float)
82 dl = data_logger.data_load()
83 return dl.read_binary(datafile)
85 def T_plot(T, plotVerbose) :
87 Umm, just print the temperature?
89 if plotVerbose or PYLAB_VERBOSE or TEXT_VERBOSE :
90 print "Temperature ", T
92 def T_load_analyze_tweaked(tweak_file, convert_to_K=C_to_K, textVerboseFile=None) :
93 "Load all the T array files from a tweak file and return a single array"
95 for line in file(tweak_file, 'r') :
97 path = parsed[0].split('\n')[0]
98 if textVerboseFile != None :
99 print >> textVerboseFile, "Reading data from %s" % (path)
103 return numpy.array(Ts, dtype=numpy.float)
105 # commandline interface functions
108 def read_data(ifile):
109 "ifile can be a filename string or open (seekable) file object"
110 if ifile == None : ifile = sys.stdin
111 unlabeled_data=scipy.io.read_array(ifile)
112 return unlabeled_data
114 if __name__ == '__main__' :
115 # command line interface
116 from optparse import OptionParser
118 usage_string = ('%prog <input-file>\n'
119 '2008, W. Trevor King.\n'
121 'There are two operation modes, one to analyze a single T (temperature) file,\n'
122 'and one to analyze tweak files.\n'
124 'Single file mode (the default) :\n'
125 'Reads in single column ASCII file of temperatures and... prints them back out.\n'
126 'No need to do this, but the option is available for consistency with the other\n'
127 'calibcant modules.\n'
130 'Runs the same analysis as in single file mode for each T file in\n'
131 'a tweak file. Each line in the tweak file specifies a single T file.\n'
132 'A T file contains a sequence of 32 bit floats representing temperature in K.\n'
134 parser = OptionParser(usage=usage_string, version='%prog 0.1')
135 parser.add_option('-C', '--celsius', dest='celsius',
136 help='Use Celsius input temperatures instead of Kelvin (defaul %default)\n',
137 action='store_true', default=False)
138 parser.add_option('-o', '--output-file', dest='ofilename',
139 help='write output to FILE (default stdout)',
140 type='string', metavar='FILE')
141 parser.add_option('-c', '--comma-out', dest='comma_out', action='store_true',
142 help='Output comma-seperated values (default %default)',
144 parser.add_option('-t', '--tweak-mode', dest='tweakmode', action='store_true',
145 help='Run in tweak-file mode',
147 parser.add_option('-v', '--verbose', dest='verbose', action='store_true',
148 help='Print lots of debugging information',
151 options,args = parser.parse_args()
153 assert len(args) >= 1, "Need an input file"
157 if options.ofilename != None :
158 ofile = file(options.ofilename, 'w')
161 if options.verbose == True :
165 config.TEXT_VERBOSE = options.verbose
166 config.PYLAB_VERBOSE = False
167 config.GNUPLOT_VERBOSE = False
169 convert_to_K = C_to_K
171 convert_to_K = lambda T : T # no-change function
173 if options.tweakmode == False :
174 data = read_data(ifilename)
175 Ts = T_analyze(T, convert_to_K)
176 else : # tweak file mode
177 Ts = T_load_analyze_tweaked(ifilename, convert_to_K, textVerboseFile=vfile)
179 if options.comma_out :
183 common.write_array(ofile, Ts, sep)
185 if options.ofilename != None :