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casa
$Rev:20696$
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casa
$Rev:20696$
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00001 import sys 00002 import inspect 00003 00004 from asap.parameters import rcParams 00005 from asap.scantable import scantable 00006 00007 00008 # workaround for ipython, which redirects this if banner=0 in ipythonrc 00009 #sys.stdout = sys.__stdout__ 00010 #sys.stderr = sys.__stderr__ 00011 00012 def version(): 00013 print "ASAP %s(%s)"% (__version__, __date__) 00014 00015 def list_scans(t = scantable): 00016 print "The user created scantables are: ", 00017 globs=inspect.currentframe().f_back.f_locals.copy() 00018 out = [ k for k,v in globs.iteritems() \ 00019 if isinstance(v, scantable) and not k.startswith("_") ] 00020 print out 00021 return out 00022 00023 def commands(): 00024 x = """\ 00025 [The scan container] 00026 scantable - a container for integrations/scans 00027 (can open asap/rpfits/sdfits and ms files) 00028 copy - returns a copy of a scan 00029 get_scan - gets a specific scan out of a scantable 00030 (by name or number) 00031 drop_scan - drops a specific scan out of a scantable 00032 (by number) 00033 set_selection - set a new subselection of the data 00034 get_selection - get the current selection object 00035 summary - print info about the scantable contents 00036 stats - get specified statistic of the spectra in 00037 the scantable 00038 stddev - get the standard deviation of the spectra 00039 in the scantable 00040 get_tsys - get the TSys 00041 get_time - get the timestamps of the integrations 00042 get_inttime - get the integration time 00043 get_sourcename - get the source names of the scans 00044 get_azimuth - get the azimuth of the scans 00045 get_elevation - get the elevation of the scans 00046 get_parangle - get the parallactic angle of the scans 00047 get_coordinate - get the spectral coordinate for the given row, 00048 which can be used for coordinate conversions 00049 get_weather - get the weather condition parameters 00050 get_unit - get the current unit 00051 set_unit - set the abcissa unit to be used from this 00052 point on 00053 get_abcissa - get the abcissa values and name for a given 00054 row (time) 00055 get_column_names - get the names of the columns in the scantable 00056 for use with selector.set_query 00057 set_freqframe - set the frame info for the Spectral Axis 00058 (e.g. 'LSRK') 00059 set_doppler - set the doppler to be used from this point on 00060 set_dirframe - set the frame for the direction on the sky 00061 set_instrument - set the instrument name 00062 set_feedtype - set the feed type 00063 get_fluxunit - get the brightness flux unit 00064 set_fluxunit - set the brightness flux unit 00065 set_sourcetype - set the type of the source - source or reference 00066 create_mask - return an mask in the current unit 00067 for the given region. The specified regions 00068 are NOT masked 00069 get_restfreqs - get the current list of rest frequencies 00070 set_restfreqs - set a list of rest frequencies 00071 shift_refpix - shift the reference pixel of the IFs 00072 set_spectrum - overwrite the spectrum for a given row 00073 get_spectrum - retrieve the spectrum for a given 00074 get_mask - retrieve the mask for a given 00075 flag - flag selected channels in the data 00076 lag_flag - flag specified frequency in the data 00077 save - save the scantable to disk as either 'ASAP', 00078 'SDFITS' or 'ASCII' 00079 nbeam,nif,nchan,npol - the number of beams/IFs/Pols/Chans 00080 nscan - the number of scans in the scantable 00081 nrow - the number of spectra in the scantable 00082 history - print the history of the scantable 00083 get_fit - get a fit which has been stored witnh the data 00084 average_time - return the (weighted) time average of a scan 00085 or a list of scans 00086 average_pol - average the polarisations together. 00087 average_beam - average the beams together. 00088 convert_pol - convert to a different polarisation type 00089 auto_quotient - return the on/off quotient with 00090 automatic detection of the on/off scans (closest 00091 in time off is selected) 00092 mx_quotient - Form a quotient using MX data (off beams) 00093 scale, *, / - return a scan scaled by a given factor 00094 add, + - return a scan with given value added 00095 sub, - - return a scan with given value subtracted 00096 bin - return a scan with binned channels 00097 resample - return a scan with resampled channels 00098 smooth - return the spectrally smoothed scan 00099 reshape - cut out channel range 00100 poly_baseline - fit a polynomial baseline to all Beams/IFs/Pols 00101 auto_poly_baseline - automatically fit a polynomial baseline 00102 recalc_azel - recalculate azimuth and elevation based on 00103 the pointing 00104 gain_el - apply gain-elevation correction 00105 opacity - apply opacity correction 00106 convert_flux - convert to and from Jy and Kelvin brightness 00107 units 00108 freq_align - align spectra in frequency frame 00109 invert_phase - Invert the phase of the cross-correlation 00110 swap_linears - Swap XX and YY (or RR LL) 00111 rotate_xyphase - rotate XY phase of cross correlation 00112 rotate_linpolphase - rotate the phase of the complex 00113 polarization O=Q+iU correlation 00114 freq_switch - perform frequency switching on the data 00115 stats - Determine the specified statistic, e.g. 'min' 00116 'max', 'rms' etc. 00117 stddev - Determine the standard deviation of the current 00118 beam/if/pol 00119 get_row_selector - get the selection object for a specified row 00120 number 00121 [Selection] 00122 selector - a selection object to set a subset of a scantable 00123 set_scans - set (a list of) scans by index 00124 set_cycles - set (a list of) cycles by index 00125 set_beams - set (a list of) beamss by index 00126 set_ifs - set (a list of) ifs by index 00127 set_polarisations - set (a list of) polarisations by name 00128 or by index 00129 set_names - set a selection by name (wildcards allowed) 00130 set_tsys - set a selection by tsys thresholds 00131 set_query - set a selection by SQL-like query, e.g. BEAMNO==1 00132 ( also get_ functions for all these ) 00133 reset - unset all selections 00134 + - merge two selections 00135 00136 [Math] Mainly functions which operate on more than one scantable 00137 00138 average_time - return the (weighted) time average 00139 of a list of scans 00140 quotient - return the on/off quotient 00141 simple_math - simple mathematical operations on two scantables, 00142 'add', 'sub', 'mul', 'div' 00143 quotient - build quotient of the given on and off scans 00144 (matched pairs and 1 off - n on are valid) 00145 merge - merge a list of scantables 00146 00147 [Line Catalog] 00148 linecatalog - a linecatalog wrapper, taking an ASCII or 00149 internal format table 00150 summary - print a summary of the current selection 00151 set_name - select a subset by name pattern, e.g. '*OH*' 00152 set_strength_limits - select a subset by line strength limits 00153 set_frequency_limits - select a subset by frequency limits 00154 reset - unset all selections 00155 save - save the current subset to a table (internal 00156 format) 00157 get_row - get the name and frequency from a specific 00158 row in the table 00159 [Fitting] 00160 fitter 00161 auto_fit - return a scan where the function is 00162 applied to all Beams/IFs/Pols. 00163 commit - return a new scan where the fits have been 00164 commited. 00165 fit - execute the actual fitting process 00166 store_fit - store the fit parameters in the data (scantable) 00167 get_chi2 - get the Chi^2 00168 set_scan - set the scantable to be fit 00169 set_function - set the fitting function 00170 set_parameters - set the parameters for the function(s), and 00171 set if they should be held fixed during fitting 00172 set_gauss_parameters - same as above but specialised for individual 00173 gaussian components 00174 get_parameters - get the fitted parameters 00175 plot - plot the resulting fit and/or components and 00176 residual 00177 [Plotter] 00178 asapplotter - a plotter for asap, default plotter is 00179 called 'plotter' 00180 plot - plot a scantable 00181 plot_lines - plot a linecatalog overlay 00182 plotazel - plot azimuth and elevation versus time 00183 plotpointing - plot telescope pointings 00184 save - save the plot to a file ('png' ,'ps' or 'eps') 00185 set_mode - set the state of the plotter, i.e. 00186 what is to be plotted 'colour stacked' 00187 and what 'panelled' 00188 set_selection - only plot a selected part of the data 00189 set_range - set a 'zoom' window [xmin,xmax,ymin,ymax] 00190 set_legend - specify user labels for the legend indeces 00191 set_title - specify user labels for the panel indeces 00192 set_abcissa - specify a user label for the abcissa 00193 set_ordinate - specify a user label for the ordinate 00194 set_layout - specify the multi-panel layout (rows,cols) 00195 set_colors - specify a set of colours to use 00196 set_linestyles - specify a set of linestyles to use if only 00197 using one color 00198 set_font - set general font properties, e.g. 'family' 00199 set_histogram - plot in historam style 00200 set_mask - set a plotting mask for a specific polarization 00201 text - draw text annotations either in data or relative 00202 coordinates 00203 arrow - draw arrow annotations either in data or relative 00204 coordinates 00205 axhline,axvline - draw horizontal/vertical lines 00206 axhspan,axvspan - draw horizontal/vertical regions 00207 annotate - draw an arrow with label 00208 create_mask - create a scnatble mask interactively 00209 00210 xyplotter - matplotlib/pylab plotting functions 00211 00212 [General] 00213 commands - this command 00214 print - print details about a variable 00215 list_scans - list all scantables created by the user 00216 list_files - list all files readable by asap (default rpf) 00217 del - delete the given variable from memory 00218 range - create a list of values, e.g. 00219 range(3) = [0,1,2], range(2,5) = [2,3,4] 00220 help - print help for one of the listed functions 00221 execfile - execute an asap script, e.g. execfile('myscript') 00222 list_rcparameters - print out a list of possible values to be 00223 put into $HOME/.asaprc 00224 rc - set rc parameters from within asap 00225 mask_and,mask_or, 00226 mask_not - boolean operations on masks created with 00227 scantable.create_mask 00228 skydip - gain opacity values from a sky dip observation 00229 opacity_model - compute opacities fro given frequencies based on 00230 atmospheric model 00231 00232 Note: 00233 How to use this with help: 00234 # function 'summary' 00235 [xxx] is just a category 00236 Every 'sub-level' in this list should be replaces by a '.' Period when 00237 using help 00238 Example: 00239 ASAP> help scantable # to get info on ths scantable 00240 ASAP> help scantable.summary # to get help on the scantable's 00241 ASAP> help average_time 00242 00243 """ 00244 if rcParams['verbose']: 00245 try: 00246 from IPython.genutils import page as pager 00247 except ImportError: 00248 from pydoc import pager 00249 pager(x) 00250 else: 00251 print x 00252 return
1.8.0
