| 1 | """
|
|---|
| 2 | This is the ATNF Single Dish Analysis package.
|
|---|
| 3 |
|
|---|
| 4 | """
|
|---|
| 5 | import os,sys
|
|---|
| 6 |
|
|---|
| 7 | def _validate_bool(b):
|
|---|
| 8 | 'Convert b to a boolean or raise'
|
|---|
| 9 | bl = b.lower()
|
|---|
| 10 | if bl in ('f', 'no', 'false', '0', 0): return False
|
|---|
| 11 | elif bl in ('t', 'yes', 'true', '1', 1): return True
|
|---|
| 12 | else:
|
|---|
| 13 | raise ValueError('Could not convert "%s" to boolean' % b)
|
|---|
| 14 |
|
|---|
| 15 | def _validate_int(s):
|
|---|
| 16 | 'convert s to int or raise'
|
|---|
| 17 | try: return int(s)
|
|---|
| 18 | except ValueError:
|
|---|
| 19 | raise ValueError('Could not convert "%s" to int' % s)
|
|---|
| 20 |
|
|---|
| 21 | def _asap_fname():
|
|---|
| 22 | """
|
|---|
| 23 | Return the path to the rc file
|
|---|
| 24 |
|
|---|
| 25 | Search order:
|
|---|
| 26 |
|
|---|
| 27 | * current working dir
|
|---|
| 28 | * environ var ASAPRC
|
|---|
| 29 | * HOME/.asaprc
|
|---|
| 30 |
|
|---|
| 31 | """
|
|---|
| 32 |
|
|---|
| 33 | fname = os.path.join( os.getcwd(), '.asaprc')
|
|---|
| 34 | if os.path.exists(fname): return fname
|
|---|
| 35 |
|
|---|
| 36 | if os.environ.has_key('ASAPRC'):
|
|---|
| 37 | path = os.environ['ASAPRC']
|
|---|
| 38 | if os.path.exists(path):
|
|---|
| 39 | fname = os.path.join(path, '.asaprc')
|
|---|
| 40 | if os.path.exists(fname):
|
|---|
| 41 | return fname
|
|---|
| 42 |
|
|---|
| 43 | if os.environ.has_key('HOME'):
|
|---|
| 44 | home = os.environ['HOME']
|
|---|
| 45 | fname = os.path.join(home, '.asaprc')
|
|---|
| 46 | if os.path.exists(fname):
|
|---|
| 47 | return fname
|
|---|
| 48 | return None
|
|---|
| 49 |
|
|---|
| 50 |
|
|---|
| 51 | defaultParams = {
|
|---|
| 52 | # general
|
|---|
| 53 | 'verbose' : [True, _validate_bool],
|
|---|
| 54 | 'useplotter' : [True, _validate_bool],
|
|---|
| 55 | 'insitu' : [True, _validate_bool],
|
|---|
| 56 |
|
|---|
| 57 | # plotting
|
|---|
| 58 | 'plotter.stacking' : ['p', str],
|
|---|
| 59 | 'plotter.panelling' : ['s', str],
|
|---|
| 60 |
|
|---|
| 61 | # scantable
|
|---|
| 62 | 'scantable.save' : ['ASAP', str],
|
|---|
| 63 | 'scantable.autoaverage' : [True, _validate_bool],
|
|---|
| 64 | 'scantable.freqframe' : ['LSRK', str], #default frequency frame
|
|---|
| 65 | 'scantable.allaxes' : [True, _validate_bool], # apply action to all axes
|
|---|
| 66 | 'scantable.plotter' : [True, _validate_bool], # use internal plotter
|
|---|
| 67 | 'scantable.verbosesummary' : [False, _validate_bool]
|
|---|
| 68 |
|
|---|
| 69 | # fitter
|
|---|
| 70 | }
|
|---|
| 71 |
|
|---|
| 72 | def list_rcparameters():
|
|---|
| 73 |
|
|---|
| 74 | print """
|
|---|
| 75 | # general
|
|---|
| 76 | # print verbose output
|
|---|
| 77 | verbose : True
|
|---|
| 78 |
|
|---|
| 79 | # preload a default plotter
|
|---|
| 80 | useplotter : True
|
|---|
| 81 |
|
|---|
| 82 | # apply operations on the input scantable or return new one
|
|---|
| 83 | insitu : True
|
|---|
| 84 |
|
|---|
| 85 | # plotting
|
|---|
| 86 | # default mode for colour stacking
|
|---|
| 87 | plotter.stacking : Pol
|
|---|
| 88 |
|
|---|
| 89 | # default mode for panelling
|
|---|
| 90 | plotter.panelling : scan
|
|---|
| 91 |
|
|---|
| 92 | # scantable
|
|---|
| 93 | # default ouput format when saving
|
|---|
| 94 | scantable.save : ASAP
|
|---|
| 95 | # auto averaging on read
|
|---|
| 96 | scantable.autoaverage : True
|
|---|
| 97 |
|
|---|
| 98 | # default frequency frame to set when function
|
|---|
| 99 | # scantable.set_freqfrmae is called
|
|---|
| 100 | scantable.freqframe : LSRK
|
|---|
| 101 |
|
|---|
| 102 | # apply action to all axes not just the cursor location
|
|---|
| 103 | scantable.allaxes : True
|
|---|
| 104 |
|
|---|
| 105 | # use internal plotter
|
|---|
| 106 | scantable.plotter : True
|
|---|
| 107 |
|
|---|
| 108 | # Control the level of information printed by summary
|
|---|
| 109 | scantable.verbosesummary : False
|
|---|
| 110 |
|
|---|
| 111 | # Fitter
|
|---|
| 112 | """
|
|---|
| 113 |
|
|---|
| 114 | def rc_params():
|
|---|
| 115 | 'Return the default params updated from the values in the rc file'
|
|---|
| 116 |
|
|---|
| 117 | fname = _asap_fname()
|
|---|
| 118 |
|
|---|
| 119 | if fname is None or not os.path.exists(fname):
|
|---|
| 120 | message = 'could not find rc file; returning defaults'
|
|---|
| 121 | ret = dict([ (key, tup[0]) for key, tup in defaultParams.items()])
|
|---|
| 122 | #print message
|
|---|
| 123 | return ret
|
|---|
| 124 |
|
|---|
| 125 | cnt = 0
|
|---|
| 126 | for line in file(fname):
|
|---|
| 127 | cnt +=1
|
|---|
| 128 | line = line.strip()
|
|---|
| 129 | if not len(line): continue
|
|---|
| 130 | if line.startswith('#'): continue
|
|---|
| 131 | tup = line.split(':',1)
|
|---|
| 132 | if len(tup) !=2:
|
|---|
| 133 | print ('Illegal line #%d\n\t%s\n\tin file "%s"' % (cnt, line, fname))
|
|---|
| 134 | continue
|
|---|
| 135 |
|
|---|
| 136 | key, val = tup
|
|---|
| 137 | key = key.strip()
|
|---|
| 138 | if not defaultParams.has_key(key):
|
|---|
| 139 | print ('Bad key "%s" on line %d in %s' % (key, cnt, fname))
|
|---|
| 140 | continue
|
|---|
| 141 |
|
|---|
| 142 | default, converter = defaultParams[key]
|
|---|
| 143 |
|
|---|
| 144 | ind = val.find('#')
|
|---|
| 145 | if ind>=0: val = val[:ind] # ignore trailing comments
|
|---|
| 146 | val = val.strip()
|
|---|
| 147 | try: cval = converter(val) # try to convert to proper type or raise
|
|---|
| 148 | except Exception, msg:
|
|---|
| 149 | print ('Bad val "%s" on line #%d\n\t"%s"\n\tin file "%s"\n\t%s' % (val, cnt, line, fname, msg))
|
|---|
| 150 | continue
|
|---|
| 151 | else:
|
|---|
| 152 | # Alles Klar, update dict
|
|---|
| 153 | defaultParams[key][0] = cval
|
|---|
| 154 |
|
|---|
| 155 | # strip the conveter funcs and return
|
|---|
| 156 | ret = dict([ (key, tup[0]) for key, tup in defaultParams.items()])
|
|---|
| 157 | print ('loaded rc file %s'%fname)
|
|---|
| 158 |
|
|---|
| 159 | return ret
|
|---|
| 160 |
|
|---|
| 161 |
|
|---|
| 162 | # this is the instance used by the asap classes
|
|---|
| 163 | rcParams = rc_params()
|
|---|
| 164 |
|
|---|
| 165 | rcParamsDefault = dict(rcParams.items()) # a copy
|
|---|
| 166 |
|
|---|
| 167 | def rc(group, **kwargs):
|
|---|
| 168 | """
|
|---|
| 169 | Set the current rc params. Group is the grouping for the rc, eg
|
|---|
| 170 | for scantable.save the group is 'scantable', for plotter.stacking, the
|
|---|
| 171 | group is 'plotter', and so on. kwargs is a list of attribute
|
|---|
| 172 | name/value pairs, eg
|
|---|
| 173 |
|
|---|
| 174 | rc('scantable', save='SDFITS')
|
|---|
| 175 |
|
|---|
| 176 | sets the current rc params and is equivalent to
|
|---|
| 177 |
|
|---|
| 178 | rcParams['scantable.save'] = 'SDFITS'
|
|---|
| 179 |
|
|---|
| 180 | Use rcdefaults to restore the default rc params after changes.
|
|---|
| 181 | """
|
|---|
| 182 |
|
|---|
| 183 | aliases = {}
|
|---|
| 184 |
|
|---|
| 185 | for k,v in kwargs.items():
|
|---|
| 186 | name = aliases.get(k) or k
|
|---|
| 187 | key = '%s.%s' % (group, name)
|
|---|
| 188 | if not rcParams.has_key(key):
|
|---|
| 189 | raise KeyError('Unrecognized key "%s" for group "%s" and name "%s"' % (key, group, name))
|
|---|
| 190 |
|
|---|
| 191 | rcParams[key] = v
|
|---|
| 192 |
|
|---|
| 193 |
|
|---|
| 194 | def rcdefaults():
|
|---|
| 195 | """
|
|---|
| 196 | Restore the default rc params - the ones that were created at
|
|---|
| 197 | asap load time
|
|---|
| 198 | """
|
|---|
| 199 | rcParams.update(rcParamsDefault)
|
|---|
| 200 |
|
|---|
| 201 |
|
|---|
| 202 | def _is_sequence_or_number(param, ptype=int):
|
|---|
| 203 | if isinstance(param,tuple) or isinstance(param,list):
|
|---|
| 204 | out = True
|
|---|
| 205 | for p in param:
|
|---|
| 206 | out &= isinstance(p,ptype)
|
|---|
| 207 | return out
|
|---|
| 208 | elif isinstance(param, ptype):
|
|---|
| 209 | return True
|
|---|
| 210 | return False
|
|---|
| 211 |
|
|---|
| 212 | from asapfitter import *
|
|---|
| 213 | from asapreader import reader
|
|---|
| 214 | from asapmath import *
|
|---|
| 215 | from scantable import *
|
|---|
| 216 | from asaplinefind import *
|
|---|
| 217 | from asapfit import *
|
|---|
| 218 |
|
|---|
| 219 | from numarray import logical_and as mask_and
|
|---|
| 220 | from numarray import logical_or as mask_or
|
|---|
| 221 | from numarray import logical_not as mask_not
|
|---|
| 222 |
|
|---|
| 223 | if rcParams['useplotter']:
|
|---|
| 224 | if os.environ.has_key('DISPLAY'):
|
|---|
| 225 | print "Initialising asapplotter with the name 'plotter' ..."
|
|---|
| 226 | import asapplotter
|
|---|
| 227 | plotter = asapplotter.asapplotter()
|
|---|
| 228 | else:
|
|---|
| 229 | print "No $DISPLAY set. Disabling plotter.\n"
|
|---|
| 230 |
|
|---|
| 231 | #from numarray ones,zeros
|
|---|
| 232 |
|
|---|
| 233 |
|
|---|
| 234 | __date__ = '$Date: 2005-09-20 04:26:55 +0000 (Tue, 20 Sep 2005) $'.split()[1]
|
|---|
| 235 | __version__ = '1.1'
|
|---|
| 236 |
|
|---|
| 237 | def list_scans(t = scantable):
|
|---|
| 238 | import sys, types
|
|---|
| 239 | #meta_t = type(t)
|
|---|
| 240 | #if meta_t == types.InstanceType:
|
|---|
| 241 | # t = t.__class__
|
|---|
| 242 | #elif meta_t not in [types.ClassType, types.TypeType]:
|
|---|
| 243 | # t = meta_t
|
|---|
| 244 | globs = sys.modules['__main__'].__dict__.iteritems()
|
|---|
| 245 | print "The user created scantables are:"
|
|---|
| 246 | sts = map(lambda x: x[0], filter(lambda x: isinstance(x[1], t), globs))
|
|---|
| 247 | print filter(lambda x: not x.startswith('_'), sts)
|
|---|
| 248 |
|
|---|
| 249 | def commands():
|
|---|
| 250 | x = """
|
|---|
| 251 | [The scan container]
|
|---|
| 252 | scantable - a container for integrations/scans
|
|---|
| 253 | (can open asap/rpfits/sdfits and ms files)
|
|---|
| 254 | copy - returns a copy of a scan
|
|---|
| 255 | get_scan - gets a specific scan out of a scantable
|
|---|
| 256 | summary - print info about the scantable contents
|
|---|
| 257 | set_cursor - set a specific Beam/IF/Pol 'cursor' for
|
|---|
| 258 | further use
|
|---|
| 259 | get_cursor - print out the current cursor position
|
|---|
| 260 | stats - get specified statistic of the spectra in
|
|---|
| 261 | the scantable
|
|---|
| 262 | stddev - get the standard deviation of the spectra
|
|---|
| 263 | in the scantable
|
|---|
| 264 | get_tsys - get the TSys
|
|---|
| 265 | get_time - get the timestamps of the integrations
|
|---|
| 266 | get_unit - get the currnt unit
|
|---|
| 267 | set_unit - set the abcissa unit to be used from this
|
|---|
| 268 | point on
|
|---|
| 269 | get_abcissa - get the abcissa values and name for a given
|
|---|
| 270 | row (time)
|
|---|
| 271 | set_freqframe - set the frame info for the Spectral Axis
|
|---|
| 272 | (e.g. 'LSRK')
|
|---|
| 273 | set_doppler - set the doppler to be used from this point on
|
|---|
| 274 | set_instrument - set the instrument name
|
|---|
| 275 | get_fluxunit - get the brightness flux unit
|
|---|
| 276 | set_fluxunit - set the brightness flux unit
|
|---|
| 277 | create_mask - return an mask in the current unit
|
|---|
| 278 | for the given region. The specified regions
|
|---|
| 279 | are NOT masked
|
|---|
| 280 | get_restfreqs - get the current list of rest frequencies
|
|---|
| 281 | set_restfreqs - set a list of rest frequencies
|
|---|
| 282 | lines - print list of known spectral lines
|
|---|
| 283 | flag_spectrum - flag a whole Beam/IF/Pol
|
|---|
| 284 | save - save the scantable to disk as either 'ASAP'
|
|---|
| 285 | or 'SDFITS'
|
|---|
| 286 | nbeam,nif,nchan,npol - the number of beams/IFs/Pols/Chans
|
|---|
| 287 | history - print the history of the scantable
|
|---|
| 288 | get_fit - get a fit which has been stored witnh the data
|
|---|
| 289 | average_time - return the (weighted) time average of a scan
|
|---|
| 290 | or a list of scans
|
|---|
| 291 | average_pol - average the polarisations together.
|
|---|
| 292 | The dimension won't be reduced and
|
|---|
| 293 | all polarisations will contain the
|
|---|
| 294 | averaged spectrum.
|
|---|
| 295 | auto_quotient - return the on/off quotient with
|
|---|
| 296 | automatic detection of the on/off scans
|
|---|
| 297 | quotient - return the on/off quotient
|
|---|
| 298 | scale - return a scan scaled by a given factor
|
|---|
| 299 | add - return a scan with given value added
|
|---|
| 300 | bin - return a scan with binned channels
|
|---|
| 301 | resample - return a scan with resampled channels
|
|---|
| 302 | smooth - return the spectrally smoothed scan
|
|---|
| 303 | poly_baseline - fit a polynomial baseline to all Beams/IFs/Pols
|
|---|
| 304 | auto_poly_baseline - automatically fit a polynomial baseline
|
|---|
| 305 | gain_el - apply gain-elevation correction
|
|---|
| 306 | opacity - apply opacity correction
|
|---|
| 307 | convert_flux - convert to and from Jy and Kelvin brightness
|
|---|
| 308 | units
|
|---|
| 309 | freq_align - align spectra in frequency frame
|
|---|
| 310 | rotate_xyphase - rotate XY phase of cross correlation
|
|---|
| 311 | rotate_linpolphase - rotate the phase of the complex
|
|---|
| 312 | polarization O=Q+iU correlation
|
|---|
| 313 | [Math] Mainly functions which operate on more than one scantable
|
|---|
| 314 |
|
|---|
| 315 | average_time - return the (weighted) time average
|
|---|
| 316 | of a list of scans
|
|---|
| 317 | quotient - return the on/off quotient
|
|---|
| 318 | simple_math - simple mathematical operations on two scantables,
|
|---|
| 319 | 'add', 'sub', 'mul', 'div'
|
|---|
| 320 | [Fitting]
|
|---|
| 321 | fitter
|
|---|
| 322 | auto_fit - return a scan where the function is
|
|---|
| 323 | applied to all Beams/IFs/Pols.
|
|---|
| 324 | commit - return a new scan where the fits have been
|
|---|
| 325 | commited.
|
|---|
| 326 | fit - execute the actual fitting process
|
|---|
| 327 | store_fit - store the fit paramaters in the data (scantable)
|
|---|
| 328 | get_chi2 - get the Chi^2
|
|---|
| 329 | set_scan - set the scantable to be fit
|
|---|
| 330 | set_function - set the fitting function
|
|---|
| 331 | set_parameters - set the parameters for the function(s), and
|
|---|
| 332 | set if they should be held fixed during fitting
|
|---|
| 333 | set_gauss_parameters - same as above but specialised for individual
|
|---|
| 334 | gaussian components
|
|---|
| 335 | get_parameters - get the fitted parameters
|
|---|
| 336 | plot - plot the resulting fit and/or components and
|
|---|
| 337 | residual
|
|---|
| 338 | [Plotter]
|
|---|
| 339 | asapplotter - a plotter for asap, default plotter is
|
|---|
| 340 | called 'plotter'
|
|---|
| 341 | plot - plot a (list of) scantable
|
|---|
| 342 | save - save the plot to a file ('png' ,'ps' or 'eps')
|
|---|
| 343 | set_mode - set the state of the plotter, i.e.
|
|---|
| 344 | what is to be plotted 'colour stacked'
|
|---|
| 345 | and what 'panelled'
|
|---|
| 346 | set_cursor - only plot a selected part of the data
|
|---|
| 347 | set_range - set a 'zoom' window
|
|---|
| 348 | set_legend - specify user labels for the legend indeces
|
|---|
| 349 | set_title - specify user labels for the panel indeces
|
|---|
| 350 | set_ordinate - specify a user label for the ordinate
|
|---|
| 351 | set_abcissa - specify a user label for the abcissa
|
|---|
| 352 | set_layout - specify the multi-panel layout (rows,cols)
|
|---|
| 353 |
|
|---|
| 354 | [Reading files]
|
|---|
| 355 | reader - access rpfits/sdfits files
|
|---|
| 356 | read - read in integrations
|
|---|
| 357 | summary - list info about all integrations
|
|---|
| 358 |
|
|---|
| 359 | [General]
|
|---|
| 360 | commands - this command
|
|---|
| 361 | print - print details about a variable
|
|---|
| 362 | list_scans - list all scantables created bt the user
|
|---|
| 363 | del - delete the given variable from memory
|
|---|
| 364 | range - create a list of values, e.g.
|
|---|
| 365 | range(3) = [0,1,2], range(2,5) = [2,3,4]
|
|---|
| 366 | help - print help for one of the listed functions
|
|---|
| 367 | execfile - execute an asap script, e.g. execfile('myscript')
|
|---|
| 368 | list_rcparameters - print out a list of possible values to be
|
|---|
| 369 | put into $HOME/.asaprc
|
|---|
| 370 | mask_and,mask_or,
|
|---|
| 371 | mask_not - boolean operations on masks created with
|
|---|
| 372 | scantable.create_mask
|
|---|
| 373 |
|
|---|
| 374 | Note:
|
|---|
| 375 | How to use this with help:
|
|---|
| 376 | # function 'summary'
|
|---|
| 377 | [xxx] is just a category
|
|---|
| 378 | Every 'sub-level' in this list should be replaces by a '.' Period when
|
|---|
| 379 | using help
|
|---|
| 380 | Example:
|
|---|
| 381 | ASAP> help scantable # to get info on ths scantable
|
|---|
| 382 | ASAP> help scantable.summary # to get help on the scantable's
|
|---|
| 383 | ASAP> help average_time
|
|---|
| 384 |
|
|---|
| 385 | """
|
|---|
| 386 | print x
|
|---|
| 387 | return
|
|---|
| 388 |
|
|---|
| 389 | print """Welcome to ASAP v%s (%s) - the ATNF Spectral Analysis Package
|
|---|
| 390 |
|
|---|
| 391 | Please report any bugs to:
|
|---|
| 392 | asap@atnf.csiro.au
|
|---|
| 393 |
|
|---|
| 394 | [IMPORTANT: ASAP is 0-based]
|
|---|
| 395 | Type commands() to get a list of all available ASAP commands.
|
|---|
| 396 | """ % (__version__, __date__)
|
|---|
