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
40 from splittable_kwargs import splittableKwargsFunction, \
41 make_splittable_kwargs_function
44 "Convert Celsius -> Kelvin."
45 return celsius + 273.15
48 "Convert Kelvin -> Kelvin."
51 @splittableKwargsFunction()
52 def T_analyze(T, convert_to_K=C_to_K) :
54 Not much to do here, just convert to Kelvin.
55 Uses C_to_K (defined above) by default.
57 try : # if T is an array, convert element by element
58 for i in range(len(T)) :
59 T[i] = convert_to_K(T[i])
60 except TypeError : # otherwise, make an array from a single T
64 @splittableKwargsFunction()
65 def T_save(T, log_dir=None) :
67 Save either a single T (if you are crazy :p),
68 or an array of them (more reasonable)
70 T = numpy.array(T, dtype=numpy.float)
72 log = data_logger.data_log(log_dir, noclobber_logsubdir=False,
74 log.write_binary(T.tostring())
75 if config.LOG_DATA != None :
76 log = data_logger.data_log(config.LOG_DIR, noclobber_logsubdir=False,
78 log.write_binary(T.tostring())
80 def T_load(datafile=None) :
82 Load the saved T array (possibly of length 1), and return it. If
83 datafile == None, return an array of one config.DEFAULT_TEMP
87 return numpy.array([config.DEFAULT_TEMP], dtype=numpy.float)
89 dl = data_logger.data_load()
90 return dl.read_binary(datafile)
92 @splittableKwargsFunction()
93 def T_plot(T, plotVerbose=False) :
95 Umm, just print the temperature?
97 if plotVerbose or config.PYLAB_VERBOSE or config.TEXT_VERBOSE :
98 print "Temperature ", T
100 @splittableKwargsFunction((T_analyze, 'T', 'convert_to_K'),
102 def T_load_analyze_tweaked(tweak_file, convert_to_K=C_to_K, textVerboseFile=None, **kwargs) :
103 "Load all the T array files from a tweak file and return a single array"
104 T_analyze_kwargs,T_plot_kwargs = \
105 T_load_analyze_tweaked._splitargs(T_load_analyze_tweaked, kwargs)
107 for line in file(tweak_file, 'r') :
108 parsed = line.split()
109 path = parsed[0].strip()
110 if path[0] == '#': # a comment
112 if textVerboseFile != None :
113 print >> textVerboseFile, "Reading data from %s" % (path)
117 T_analyze(Ts, convert_to_K=convert_to_K)
118 return numpy.array(Ts, dtype=numpy.float)
120 # commandline interface functions
123 def read_data(ifile):
124 "ifile can be a filename string or open (seekable) file object"
125 if ifile == None : ifile = sys.stdin
126 unlabeled_data=scipy.io.read_array(ifile)
127 return unlabeled_data
129 if __name__ == '__main__' :
130 # command line interface
131 from optparse import OptionParser
133 usage_string = ('%prog <input-file>\n'
134 '2008, W. Trevor King.\n'
136 'There are two operation modes, one to analyze a single T (temperature) file,\n'
137 'and one to analyze tweak files.\n'
139 'Single file mode (the default) :\n'
140 'Reads in single column ASCII file of temperatures and... prints them back out.\n'
141 'No need to do this, but the option is available for consistency with the other\n'
142 'calibcant modules.\n'
145 'Runs the same analysis as in single file mode for each T file in\n'
146 'a tweak file. Each line in the tweak file specifies a single T file.\n'
147 'Blank lines and those beginning with a pound sign (#) are ignored.\n'
148 'A T file contains a sequence of 32 bit floats representing temperature in K.\n'
150 parser = OptionParser(usage=usage_string, version='%prog 0.1')
151 parser.add_option('-C', '--celsius', dest='celsius',
152 help='Use Celsius input temperatures instead of Kelvin (default %default)\n',
153 action='store_true', default=False)
154 parser.add_option('-o', '--output-file', dest='ofilename',
155 help='write output to FILE (default stdout)',
156 type='string', metavar='FILE')
157 parser.add_option('-c', '--comma-out', dest='comma_out', action='store_true',
158 help='Output comma-seperated values (default %default)',
160 parser.add_option('-t', '--tweak-mode', dest='tweakmode', action='store_true',
161 help='Run in tweak-file mode',
163 parser.add_option('-v', '--verbose', dest='verbose', action='store_true',
164 help='Print lots of debugging information',
167 options,args = parser.parse_args()
169 assert len(args) >= 1, "Need an input file"
173 if options.ofilename != None :
174 ofile = file(options.ofilename, 'w')
177 if options.verbose == True :
181 config.TEXT_VERBOSE = options.verbose
182 config.PYLAB_VERBOSE = False
183 config.GNUPLOT_VERBOSE = False
185 convert_to_K = C_to_K
187 convert_to_K = K_to_K
189 if options.tweakmode == False :
190 data = read_data(ifilename)
191 Ts = T_analyze(data, convert_to_K)
192 else : # tweak file mode
193 Ts = T_load_analyze_tweaked(ifilename, convert_to_K, textVerboseFile=vfile)
195 if options.comma_out :
199 common.write_array(ofile, Ts, sep)
201 if options.ofilename != None :