| 1 | from asap._asap import sdtable
|
|---|
| 2 | from asap import rcParams
|
|---|
| 3 | from numarray import ones,zeros
|
|---|
| 4 | import sys
|
|---|
| 5 |
|
|---|
| 6 | class scantable(sdtable):
|
|---|
| 7 | """
|
|---|
| 8 | The ASAP container for scans
|
|---|
| 9 | """
|
|---|
| 10 |
|
|---|
| 11 | def __init__(self, filename):
|
|---|
| 12 | """
|
|---|
| 13 | Create a scantable from a saved one or make a reference
|
|---|
| 14 | Parameters:
|
|---|
| 15 | filename: the name of an asap table on disk
|
|---|
| 16 | or
|
|---|
| 17 | the name of a rpfits/sdfits/ms file
|
|---|
| 18 | (integrations within scans are auto averaged
|
|---|
| 19 | and the whole file is read)
|
|---|
| 20 | or
|
|---|
| 21 | [advanced] a reference to an existing
|
|---|
| 22 | scantable
|
|---|
| 23 | """
|
|---|
| 24 | self._vb = rcParams['verbose']
|
|---|
| 25 | self._p = None
|
|---|
| 26 | from os import stat as st
|
|---|
| 27 | import stat
|
|---|
| 28 | if isinstance(filename,sdtable):
|
|---|
| 29 | sdtable.__init__(self, filename)
|
|---|
| 30 | else:
|
|---|
| 31 | try:
|
|---|
| 32 | mode = st(filename)[stat.ST_MODE]
|
|---|
| 33 | except OSError:
|
|---|
| 34 | print "File not found"
|
|---|
| 35 | return
|
|---|
| 36 | if stat.S_ISDIR(mode):
|
|---|
| 37 | # crude check if asap table
|
|---|
| 38 | if stat.S_ISREG(st(filename+'/table.info')[stat.ST_MODE]):
|
|---|
| 39 | sdtable.__init__(self, filename)
|
|---|
| 40 | else:
|
|---|
| 41 | print 'The given file is not a valid asap table'
|
|---|
| 42 | return
|
|---|
| 43 | else:
|
|---|
| 44 | autoav = rcParams['scantable.autoaverage']
|
|---|
| 45 |
|
|---|
| 46 | from asap._asap import sdreader
|
|---|
| 47 | r = sdreader(filename)
|
|---|
| 48 | print 'Importing data...'
|
|---|
| 49 | r.read([-1])
|
|---|
| 50 | tbl = r.getdata()
|
|---|
| 51 | if autoav:
|
|---|
| 52 | from asap._asap import average
|
|---|
| 53 | tmp = tuple([tbl])
|
|---|
| 54 | print 'Auto averaging integrations...'
|
|---|
| 55 | tbl2 = average(tmp,(),True,'none')
|
|---|
| 56 | sdtable.__init__(self,tbl2)
|
|---|
| 57 | del r,tbl
|
|---|
| 58 | else:
|
|---|
| 59 | sdtable.__init__(self,tbl)
|
|---|
| 60 |
|
|---|
| 61 | def save(self, name="", format=None):
|
|---|
| 62 | """
|
|---|
| 63 | Store the scantable on disk. This can be a asap file or SDFITS/MS2.
|
|---|
| 64 | Parameters:
|
|---|
| 65 | name: the name of the outputfile. For format="FITS" this
|
|---|
| 66 | is the root file name (and can be empty).
|
|---|
| 67 | format: an optional file format. Default is ASAP.
|
|---|
| 68 | Allowed are - 'ASAP' (save as ASAP Table),
|
|---|
| 69 | 'SDFITS' (save as SDFITS file)
|
|---|
| 70 | 'FITS' (saves each row as a FITS Image)
|
|---|
| 71 | 'ASCII' (saves as ascii text file)
|
|---|
| 72 | 'MS2' (saves as an aips++
|
|---|
| 73 | MeasurementSet V2)
|
|---|
| 74 | Example:
|
|---|
| 75 | scan.save('myscan.asap')
|
|---|
| 76 | scan.save('myscan.sdfits','SDFITS')
|
|---|
| 77 | """
|
|---|
| 78 | if format is None: format = rcParams['scantable.save']
|
|---|
| 79 | if format == 'ASAP':
|
|---|
| 80 | self._save(name)
|
|---|
| 81 | else:
|
|---|
| 82 | from asap._asap import sdwriter as _sw
|
|---|
| 83 | w = _sw(format)
|
|---|
| 84 | w.write(self, name)
|
|---|
| 85 | return
|
|---|
| 86 |
|
|---|
| 87 | def copy(self):
|
|---|
| 88 | """
|
|---|
| 89 | Return a copy of this scantable.
|
|---|
| 90 | Parameters:
|
|---|
| 91 | none
|
|---|
| 92 | Example:
|
|---|
| 93 | copiedscan = scan.copy()
|
|---|
| 94 | """
|
|---|
| 95 | sd = scantable(sdtable._copy(self))
|
|---|
| 96 | return sd
|
|---|
| 97 |
|
|---|
| 98 | def get_scan(self, scanid=None):
|
|---|
| 99 | """
|
|---|
| 100 | Return a specific scan (by scanno) or collection of scans (by
|
|---|
| 101 | source name) in a new scantable.
|
|---|
| 102 | Parameters:
|
|---|
| 103 | scanid: a scanno or a source name
|
|---|
| 104 | Example:
|
|---|
| 105 | scan.get_scan('323p459')
|
|---|
| 106 | # gets all scans containing the source '323p459'
|
|---|
| 107 | """
|
|---|
| 108 | if scanid is None:
|
|---|
| 109 | print "Please specify a scan no or name to retrieve from the scantable"
|
|---|
| 110 | try:
|
|---|
| 111 | if type(scanid) is str:
|
|---|
| 112 | s = sdtable._getsource(self,scanid)
|
|---|
| 113 | return scantable(s)
|
|---|
| 114 | elif type(scanid) is int:
|
|---|
| 115 | s = sdtable._getscan(self,scanid)
|
|---|
| 116 | return scantable(s)
|
|---|
| 117 | except RuntimeError:
|
|---|
| 118 | print "Couldn't find any match."
|
|---|
| 119 |
|
|---|
| 120 | def __str__(self):
|
|---|
| 121 | return sdtable.summary(self)
|
|---|
| 122 |
|
|---|
| 123 | def summary(self,filename=None):
|
|---|
| 124 | """
|
|---|
| 125 | Print a summary of the contents of this scantable.
|
|---|
| 126 | Parameters:
|
|---|
| 127 | filename: the name of a file to write the putput to
|
|---|
| 128 | Default - no file output
|
|---|
| 129 | """
|
|---|
| 130 | info = sdtable.summary(self)
|
|---|
| 131 | if filename is not None:
|
|---|
| 132 | data = open(filename, 'w')
|
|---|
| 133 | data.write(info)
|
|---|
| 134 | data.close()
|
|---|
| 135 | print info
|
|---|
| 136 |
|
|---|
| 137 | def set_selection(self, thebeam=0,theif=0,thepol=0):
|
|---|
| 138 | """
|
|---|
| 139 | Set the spectrum for individual operations.
|
|---|
| 140 | Parameters:
|
|---|
| 141 | thebeam,theif,thepol: a number
|
|---|
| 142 | Example:
|
|---|
| 143 | scan.set_selection(0,0,1)
|
|---|
| 144 | pol1sig = scan.stats(all=False) # returns std dev for beam=0
|
|---|
| 145 | # if=0, pol=1
|
|---|
| 146 | """
|
|---|
| 147 | self.setbeam(thebeam)
|
|---|
| 148 | self.setpol(thepol)
|
|---|
| 149 | self.setif(theif)
|
|---|
| 150 | return
|
|---|
| 151 |
|
|---|
| 152 | def get_selection(self):
|
|---|
| 153 | """
|
|---|
| 154 | Return/print a the current 'cursor' into the Beam/IF/Pol cube.
|
|---|
| 155 | Parameters:
|
|---|
| 156 | none
|
|---|
| 157 | Returns:
|
|---|
| 158 | a list of values (currentBeam,currentIF,currentPol)
|
|---|
| 159 | Example:
|
|---|
| 160 | none
|
|---|
| 161 | """
|
|---|
| 162 | i = self.getbeam()
|
|---|
| 163 | j = self.getif()
|
|---|
| 164 | k = self.getpol()
|
|---|
| 165 | if self._vb:
|
|---|
| 166 | print "--------------------------------------------------"
|
|---|
| 167 | print " Cursor selection"
|
|---|
| 168 | print "--------------------------------------------------"
|
|---|
| 169 | out = 'Beam=%d IF=%d Pol=%d ' % (i,j,k)
|
|---|
| 170 | print out
|
|---|
| 171 | return i,j,k
|
|---|
| 172 |
|
|---|
| 173 | def stats(self, stat='stddev', mask=None, all=None):
|
|---|
| 174 | """
|
|---|
| 175 | Determine the specified statistic of the current beam/if/pol
|
|---|
| 176 | Takes a 'mask' as an optional parameter to specify which
|
|---|
| 177 | channels should be excluded.
|
|---|
| 178 | Parameters:
|
|---|
| 179 | stat: 'min', 'max', 'sumsq', 'sum', 'mean'
|
|---|
| 180 | 'var', 'stddev', 'avdev', 'rms', 'median'
|
|---|
| 181 | mask: an optional mask specifying where the statistic
|
|---|
| 182 | should be determined.
|
|---|
| 183 | all: optional flag to show all (default or .asaprc) or a
|
|---|
| 184 | cursor selected spectrum of Beam/IF/Pol
|
|---|
| 185 |
|
|---|
| 186 | Example:
|
|---|
| 187 | scan.set_unit('channel')
|
|---|
| 188 | msk = scan.create_mask([100,200],[500,600])
|
|---|
| 189 | scan.stats(stat='mean', mask=m)
|
|---|
| 190 | """
|
|---|
| 191 | if all is None: all = rcParams['scantable.allaxes']
|
|---|
| 192 | from asap._asap import stats as _stats
|
|---|
| 193 | if mask == None:
|
|---|
| 194 | mask = ones(self.nchan())
|
|---|
| 195 | if all:
|
|---|
| 196 | out = ''
|
|---|
| 197 | tmp = []
|
|---|
| 198 | for l in range(self.nrow()):
|
|---|
| 199 | tm = self._gettime(l)
|
|---|
| 200 | out += 'Time[%s]:\n' % (tm)
|
|---|
| 201 | for i in range(self.nbeam()):
|
|---|
| 202 | self.setbeam(i)
|
|---|
| 203 | if self.nbeam() > 1: out += ' Beam[%d] ' % (i)
|
|---|
| 204 | for j in range(self.nif()):
|
|---|
| 205 | self.setif(j)
|
|---|
| 206 | if self.nif() > 1: out += ' IF[%d] ' % (j)
|
|---|
| 207 | for k in range(self.npol()):
|
|---|
| 208 | self.setpol(k)
|
|---|
| 209 | if self.npol() > 1: out += ' Pol[%d] ' % (k)
|
|---|
| 210 | statval = _stats(self,mask,stat)
|
|---|
| 211 | tmp.append(statval)
|
|---|
| 212 | out += '= %3.3f\n' % (statval[l])
|
|---|
| 213 | out += "--------------------------------------------------\n"
|
|---|
| 214 | if self._vb:
|
|---|
| 215 | print "--------------------------------------------------"
|
|---|
| 216 | print " ",stat
|
|---|
| 217 | out += "--------------------------------------------------\n"
|
|---|
| 218 | print out
|
|---|
| 219 | return tmp
|
|---|
| 220 |
|
|---|
| 221 | else:
|
|---|
| 222 | i = self.getbeam()
|
|---|
| 223 | j = self.getif()
|
|---|
| 224 | k = self.getpol()
|
|---|
| 225 | statval = _stats(self,mask,stat)
|
|---|
| 226 | out = ''
|
|---|
| 227 | for l in range(self.nrow()):
|
|---|
| 228 | tm = self._gettime(l)
|
|---|
| 229 | out += 'Time[%s]:\n' % (tm)
|
|---|
| 230 | if self.nbeam() > 1: out += ' Beam[%d] ' % (i)
|
|---|
| 231 | if self.nif() > 1: out += ' IF[%d] ' % (j)
|
|---|
| 232 | if self.npol() > 1: out += ' Pol[%d] ' % (k)
|
|---|
| 233 | out += '= %3.3f\n' % (statval[l])
|
|---|
| 234 | out += "--------------------------------------------------\n"
|
|---|
| 235 |
|
|---|
| 236 | if self._vb:
|
|---|
| 237 | print "--------------------------------------------------"
|
|---|
| 238 | print " ",stat
|
|---|
| 239 | print "--------------------------------------------------"
|
|---|
| 240 | print out
|
|---|
| 241 | return statval
|
|---|
| 242 |
|
|---|
| 243 | def stddev(self,mask=None, all=None):
|
|---|
| 244 | """
|
|---|
| 245 | Determine the standard deviation of the current beam/if/pol
|
|---|
| 246 | Takes a 'mask' as an optional parameter to specify which
|
|---|
| 247 | channels should be excluded.
|
|---|
| 248 | Parameters:
|
|---|
| 249 | mask: an optional mask specifying where the standard
|
|---|
| 250 | deviation should be determined.
|
|---|
| 251 | all: optional flag to show all or a cursor selected
|
|---|
| 252 | spectrum of Beam/IF/Pol. Default is all or taken
|
|---|
| 253 | from .asaprc
|
|---|
| 254 |
|
|---|
| 255 | Example:
|
|---|
| 256 | scan.set_unit('channel')
|
|---|
| 257 | msk = scan.create_mask([100,200],[500,600])
|
|---|
| 258 | scan.stddev(mask=m)
|
|---|
| 259 | """
|
|---|
| 260 | if all is None: all = rcParams['scantable.allaxes']
|
|---|
| 261 | return self.stats(stat='stddev',mask=mask, all=all);
|
|---|
| 262 |
|
|---|
| 263 | def get_tsys(self, all=None):
|
|---|
| 264 | """
|
|---|
| 265 | Return the System temperatures.
|
|---|
| 266 | Parameters:
|
|---|
| 267 | all: optional parameter to get the Tsys values for all
|
|---|
| 268 | Beams/IFs/Pols (default) or just the one selected
|
|---|
| 269 | with scantable.set_selection()
|
|---|
| 270 | [True or False]
|
|---|
| 271 | Returns:
|
|---|
| 272 | a list of Tsys values.
|
|---|
| 273 | """
|
|---|
| 274 | if all is None: all = rcParams['scantable.allaxes']
|
|---|
| 275 | if all:
|
|---|
| 276 | out = ''
|
|---|
| 277 | tmp = []
|
|---|
| 278 | for l in range(self.nrow()):
|
|---|
| 279 | tm = self._gettime(l)
|
|---|
| 280 | out += 'Time[%s]:\n' % (tm)
|
|---|
| 281 | for i in range(self.nbeam()):
|
|---|
| 282 | self.setbeam(i)
|
|---|
| 283 | if self.nbeam() > 1: out += ' Beam[%d] ' % (i)
|
|---|
| 284 | for j in range(self.nif()):
|
|---|
| 285 | self.setif(j)
|
|---|
| 286 | if self.nif() > 1: out += ' IF[%d] ' % (j)
|
|---|
| 287 | for k in range(self.npol()):
|
|---|
| 288 | self.setpol(k)
|
|---|
| 289 | if self.npol() > 1: out += ' Pol[%d] ' % (k)
|
|---|
| 290 | ts = self._gettsys()
|
|---|
| 291 | tmp.append(ts)
|
|---|
| 292 | out += '= %3.3f\n' % (ts[l])
|
|---|
| 293 | out+= "--------------------------------------------------\n"
|
|---|
| 294 | if self._vb:
|
|---|
| 295 | print "--------------------------------------------------"
|
|---|
| 296 | print " Tsys"
|
|---|
| 297 | print "--------------------------------------------------"
|
|---|
| 298 | print out
|
|---|
| 299 | return tmp
|
|---|
| 300 | else:
|
|---|
| 301 | i = self.getbeam()
|
|---|
| 302 | j = self.getif()
|
|---|
| 303 | k = self.getpol()
|
|---|
| 304 | ts = self._gettsys()
|
|---|
| 305 | out = ''
|
|---|
| 306 | for l in range(self.nrow()):
|
|---|
| 307 | tm = self._gettime(l)
|
|---|
| 308 | out += 'Time[%s]:\n' % (tm)
|
|---|
| 309 | if self.nbeam() > 1: out += ' Beam[%d] ' % (i)
|
|---|
| 310 | if self.nif() > 1: out += ' IF[%d] ' % (j)
|
|---|
| 311 | if self.npol() > 1: out += ' Pol[%d] ' % (k)
|
|---|
| 312 | out += '= %3.3f\n' % (ts[l])
|
|---|
| 313 | out += "--------------------------------------------------\n"
|
|---|
| 314 | if self._vb:
|
|---|
| 315 | print "--------------------------------------------------"
|
|---|
| 316 | print " Tsys"
|
|---|
| 317 | print "--------------------------------------------------"
|
|---|
| 318 | print out
|
|---|
| 319 | return ts
|
|---|
| 320 |
|
|---|
| 321 | def get_time(self):
|
|---|
| 322 | """
|
|---|
| 323 | Get a list of time stamps for the observations.
|
|---|
| 324 | Return a string for each integration in the scantable.
|
|---|
| 325 | Parameters:
|
|---|
| 326 | none
|
|---|
| 327 | Example:
|
|---|
| 328 | none
|
|---|
| 329 | """
|
|---|
| 330 | out = []
|
|---|
| 331 | for i in range(self.nrow()):
|
|---|
| 332 | out.append(self._gettime(i))
|
|---|
| 333 | return out
|
|---|
| 334 |
|
|---|
| 335 | def set_unit(self, unit='channel'):
|
|---|
| 336 | """
|
|---|
| 337 | Set the unit for all following operations on this scantable
|
|---|
| 338 | Parameters:
|
|---|
| 339 | unit: optional unit, default is 'channel'
|
|---|
| 340 | one of '*Hz','km/s','channel', ''
|
|---|
| 341 | """
|
|---|
| 342 |
|
|---|
| 343 | if unit in ['','pixel', 'channel']:
|
|---|
| 344 | unit = ''
|
|---|
| 345 | inf = list(self._getcoordinfo())
|
|---|
| 346 | inf[0] = unit
|
|---|
| 347 | self._setcoordinfo(inf)
|
|---|
| 348 | if self._p: self.plot()
|
|---|
| 349 |
|
|---|
| 350 | def set_freqframe(self, frame=None):
|
|---|
| 351 | """
|
|---|
| 352 | Set the frame type of the Spectral Axis.
|
|---|
| 353 | Parameters:
|
|---|
| 354 | frame: an optional frame type, default 'LSRK'.
|
|---|
| 355 | Examples:
|
|---|
| 356 | scan.set_freqframe('BARY')
|
|---|
| 357 | """
|
|---|
| 358 | if not frame: frame = rcParams['scantable.freqframe']
|
|---|
| 359 | valid = ['REST','TOPO','LSRD','LSRK','BARY', \
|
|---|
| 360 | 'GEO','GALACTO','LGROUP','CMB']
|
|---|
| 361 | if frame in valid:
|
|---|
| 362 | inf = list(self._getcoordinfo())
|
|---|
| 363 | inf[1] = frame
|
|---|
| 364 | self._setcoordinfo(inf)
|
|---|
| 365 | else:
|
|---|
| 366 | print "Please specify a valid freq type. Valid types are:\n",valid
|
|---|
| 367 |
|
|---|
| 368 | def get_unit(self):
|
|---|
| 369 | """
|
|---|
| 370 | Get the default unit set in this scantable
|
|---|
| 371 | Parameters:
|
|---|
| 372 | Returns:
|
|---|
| 373 | A unit string
|
|---|
| 374 | """
|
|---|
| 375 | inf = self._getcoordinfo()
|
|---|
| 376 | unit = inf[0]
|
|---|
| 377 | if unit == '': unit = 'channel'
|
|---|
| 378 | return unit
|
|---|
| 379 |
|
|---|
| 380 | def get_abcissa(self, rowno=0):
|
|---|
| 381 | """
|
|---|
| 382 | Get the abcissa in the current coordinate setup for the currently
|
|---|
| 383 | selected Beam/IF/Pol
|
|---|
| 384 | Parameters:
|
|---|
| 385 | rowno: an optional row number in the scantable. Default is the
|
|---|
| 386 | first row, i.e. rowno=0
|
|---|
| 387 | Returns:
|
|---|
| 388 | The abcissa values and it's format string.
|
|---|
| 389 | """
|
|---|
| 390 | abc = self.getabcissa(rowno)
|
|---|
| 391 | lbl = self.getabcissalabel(rowno)
|
|---|
| 392 | return abc, lbl
|
|---|
| 393 |
|
|---|
| 394 | def create_mask(self, *args, **kwargs):
|
|---|
| 395 | """
|
|---|
| 396 | Compute and return a mask based on [min,max] windows.
|
|---|
| 397 | The specified windows are to be INCLUDED, when the mask is
|
|---|
| 398 | applied.
|
|---|
| 399 | Parameters:
|
|---|
| 400 | [min,max],[min2,max2],...
|
|---|
| 401 | Pairs of start/end points specifying the regions
|
|---|
| 402 | to be masked
|
|---|
| 403 | invert: optional argument. If specified as True,
|
|---|
| 404 | return an inverted mask, i.e. the regions
|
|---|
| 405 | specified are EXCLUDED
|
|---|
| 406 | Example:
|
|---|
| 407 | scan.set_unit('channel')
|
|---|
| 408 |
|
|---|
| 409 | a)
|
|---|
| 410 | msk = scan.set_mask([400,500],[800,900])
|
|---|
| 411 | # masks everything outside 400 and 500
|
|---|
| 412 | # and 800 and 900 in the unit 'channel'
|
|---|
| 413 |
|
|---|
| 414 | b)
|
|---|
| 415 | msk = scan.set_mask([400,500],[800,900], invert=True)
|
|---|
| 416 | # masks the regions between 400 and 500
|
|---|
| 417 | # and 800 and 900 in the unit 'channel'
|
|---|
| 418 |
|
|---|
| 419 | """
|
|---|
| 420 | u = self._getcoordinfo()[0]
|
|---|
| 421 | if self._vb:
|
|---|
| 422 | if u == "": u = "channel"
|
|---|
| 423 | print "The current mask window unit is", u
|
|---|
| 424 | n = self.nchan()
|
|---|
| 425 | data = self.getabcissa()
|
|---|
| 426 | msk = zeros(n)
|
|---|
| 427 | for window in args:
|
|---|
| 428 | if (len(window) != 2 or window[0] > window[1] ):
|
|---|
| 429 | print "A window needs to be defined as [min,max]"
|
|---|
| 430 | return
|
|---|
| 431 | for i in range(n):
|
|---|
| 432 | if data[i] >= window[0] and data[i] < window[1]:
|
|---|
| 433 | msk[i] = 1
|
|---|
| 434 | if kwargs.has_key('invert'):
|
|---|
| 435 | if kwargs.get('invert'):
|
|---|
| 436 | from numarray import logical_not
|
|---|
| 437 | msk = logical_not(msk)
|
|---|
| 438 | return msk
|
|---|
| 439 |
|
|---|
| 440 | def set_restfreqs(self, freqs, unit='Hz'):
|
|---|
| 441 | """
|
|---|
| 442 | Set the restfrequency(s) for this scantable.
|
|---|
| 443 | Parameters:
|
|---|
| 444 | freqs: one or more frequencies
|
|---|
| 445 | unit: optional 'unit', default 'Hz'
|
|---|
| 446 | Example:
|
|---|
| 447 | scan.set_restfreqs([1000000000.0])
|
|---|
| 448 | """
|
|---|
| 449 | if type(freqs) is float or int:
|
|---|
| 450 | freqs = (freqs)
|
|---|
| 451 | sdtable._setrestfreqs(self,freqs, unit)
|
|---|
| 452 | return
|
|---|
| 453 |
|
|---|
| 454 | def flag_spectrum(self, thebeam, theif, thepol):
|
|---|
| 455 | """
|
|---|
| 456 | This flags a selected spectrum in the scan 'for good'.
|
|---|
| 457 | USE WITH CARE - not reversible.
|
|---|
| 458 | Use masks for non-permanent exclusion of channels.
|
|---|
| 459 | Parameters:
|
|---|
| 460 | thebeam,theif,thepol: all have to be explicitly
|
|---|
| 461 | specified
|
|---|
| 462 | Example:
|
|---|
| 463 | scan.flag_spectrum(0,0,1)
|
|---|
| 464 | flags the spectrum for Beam=0, IF=0, Pol=1
|
|---|
| 465 | """
|
|---|
| 466 | if (thebeam < self.nbeam() and theif < self.nif() and thepol < self.npol()):
|
|---|
| 467 | stable.setbeam(thebeam)
|
|---|
| 468 | stable.setif(theif)
|
|---|
| 469 | stable.setpol(thepol)
|
|---|
| 470 | stable._flag(self)
|
|---|
| 471 | else:
|
|---|
| 472 | print "Please specify a valid (Beam/IF/Pol)"
|
|---|
| 473 | return
|
|---|
| 474 |
|
|---|
| 475 | def plot(self, what='spectrum',col='Pol', panel=None):
|
|---|
| 476 | """
|
|---|
| 477 | Plot the spectra contained in the scan. Alternatively you can also
|
|---|
| 478 | Plot Tsys vs Time
|
|---|
| 479 | Parameters:
|
|---|
| 480 | what: a choice of 'spectrum' (default) or 'tsys'
|
|---|
| 481 | col: which out of Beams/IFs/Pols should be colour stacked
|
|---|
| 482 | panel: set up multiple panels, currently not working.
|
|---|
| 483 | """
|
|---|
| 484 | validcol = {'Beam':self.nbeam(),'IF':self.nif(),'Pol':self.npol()}
|
|---|
| 485 |
|
|---|
| 486 | validyax = ['spectrum','tsys']
|
|---|
| 487 | from asap.asaplot import ASAPlot
|
|---|
| 488 | if not self._p:
|
|---|
| 489 | self._p = ASAPlot()
|
|---|
| 490 | #print "Plotting not enabled"
|
|---|
| 491 | #return
|
|---|
| 492 | if self._p.is_dead:
|
|---|
| 493 | del self._p
|
|---|
| 494 | self._p = ASAPlot()
|
|---|
| 495 | npan = 1
|
|---|
| 496 | x = None
|
|---|
| 497 | if what == 'tsys':
|
|---|
| 498 | n = self.nrow()
|
|---|
| 499 | if n < 2:
|
|---|
| 500 | print "Only one integration. Can't plot."
|
|---|
| 501 | return
|
|---|
| 502 | self._p.hold()
|
|---|
| 503 | self._p.clear()
|
|---|
| 504 | if panel == 'Time':
|
|---|
| 505 | npan = self.nrow()
|
|---|
| 506 | self._p.set_panels(rows=npan)
|
|---|
| 507 | xlab,ylab,tlab = None,None,None
|
|---|
| 508 | self._vb = False
|
|---|
| 509 | sel = self.get_selection()
|
|---|
| 510 | for i in range(npan):
|
|---|
| 511 | if npan > 1:
|
|---|
| 512 | self._p.subplot(i)
|
|---|
| 513 | for j in range(validcol[col]):
|
|---|
| 514 | x = None
|
|---|
| 515 | y = None
|
|---|
| 516 | m = None
|
|---|
| 517 | tlab = self._getsourcename(i)
|
|---|
| 518 | import re
|
|---|
| 519 | tlab = re.sub('_S','',tlab)
|
|---|
| 520 | if col == 'Beam':
|
|---|
| 521 | self.setbeam(j)
|
|---|
| 522 | elif col == 'IF':
|
|---|
| 523 | self.setif(j)
|
|---|
| 524 | elif col == 'Pol':
|
|---|
| 525 | self.setpol(j)
|
|---|
| 526 | if what == 'tsys':
|
|---|
| 527 | x = range(self.nrow())
|
|---|
| 528 | xlab = 'Time [pixel]'
|
|---|
| 529 | m = list(ones(len(x)))
|
|---|
| 530 | y = []
|
|---|
| 531 | ylab = r'$T_{sys}$'
|
|---|
| 532 | for k in range(len(x)):
|
|---|
| 533 | y.append(self._gettsys(k))
|
|---|
| 534 | else:
|
|---|
| 535 | x,xlab = self.get_abcissa(i)
|
|---|
| 536 | y = self.getspectrum(i)
|
|---|
| 537 | ylab = r'Flux'
|
|---|
| 538 | m = self.getmask(i)
|
|---|
| 539 | llab = col+' '+str(j)
|
|---|
| 540 | self._p.set_line(label=llab)
|
|---|
| 541 | self._p.plot(x,y,m)
|
|---|
| 542 | self._p.set_axes('xlabel',xlab)
|
|---|
| 543 | self._p.set_axes('ylabel',ylab)
|
|---|
| 544 | self._p.set_axes('title',tlab)
|
|---|
| 545 | self._p.release()
|
|---|
| 546 | self.set_selection(sel[0],sel[1],sel[2])
|
|---|
| 547 | self._vb = rcParams['verbose']
|
|---|
| 548 | return
|
|---|
