| 1 | import sys
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| 2 | import inspect
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| 3 |
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| 4 | from asap.parameters import rcParams
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| 5 | from asap.scantable import scantable
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| 6 |
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| 7 |
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| 8 | # workaround for ipython, which redirects this if banner=0 in ipythonrc
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| 9 | #sys.stdout = sys.__stdout__
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| 10 | #sys.stderr = sys.__stderr__
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| 11 |
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| 12 | def version():
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| 13 | print "ASAP %s(%s)"% (__version__, __date__)
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| 14 |
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| 15 | def list_scans(t = scantable):
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| 16 | print "The user created scantables are: ",
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| 17 | globs=inspect.currentframe().f_back.f_locals.copy()
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| 18 | out = [ k for k,v in globs.iteritems() \
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| 19 | if isinstance(v, scantable) and not k.startswith("_") ]
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| 20 | print out
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| 21 | return out
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| 22 |
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| 23 | def commands():
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| 24 | x = """\
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| 25 | [The scan container]
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| 26 | scantable - a container for integrations/scans
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| 27 | (can open asap/rpfits/sdfits and ms files)
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| 28 | copy - returns a copy of a scan
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| 29 | get_scan - gets a specific scan out of a scantable
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| 30 | (by name or number)
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| 31 | drop_scan - drops a specific scan out of a scantable
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| 32 | (by number)
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| 33 | set_selection - set a new subselection of the data
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| 34 | get_selection - get the current selection object
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| 35 | summary - print info about the scantable contents
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| 36 | stats - get specified statistic of the spectra in
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| 37 | the scantable
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| 38 | stddev - get the standard deviation of the spectra
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| 39 | in the scantable
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| 40 | get_tsys - get the TSys
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| 41 | get_time - get the timestamps of the integrations
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| 42 | get_inttime - get the integration time
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| 43 | get_sourcename - get the source names of the scans
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| 44 | get_azimuth - get the azimuth of the scans
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| 45 | get_elevation - get the elevation of the scans
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| 46 | get_parangle - get the parallactic angle of the scans
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| 47 | get_coordinate - get the spectral coordinate for the given row,
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| 48 | which can be used for coordinate conversions
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| 49 | get_weather - get the weather condition parameters
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| 50 | get_unit - get the current unit
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| 51 | set_unit - set the abcissa unit to be used from this
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| 52 | point on
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| 53 | get_abcissa - get the abcissa values and name for a given
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| 54 | row (time)
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| 55 | get_column_names - get the names of the columns in the scantable
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| 56 | for use with selector.set_query
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| 57 | set_freqframe - set the frame info for the Spectral Axis
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| 58 | (e.g. 'LSRK')
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| 59 | set_doppler - set the doppler to be used from this point on
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| 60 | set_dirframe - set the frame for the direction on the sky
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| 61 | set_instrument - set the instrument name
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| 62 | set_feedtype - set the feed type
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| 63 | get_fluxunit - get the brightness flux unit
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| 64 | set_fluxunit - set the brightness flux unit
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| 65 | set_sourcetype - set the type of the source - source or reference
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| 66 | create_mask - return an mask in the current unit
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| 67 | for the given region. The specified regions
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| 68 | are NOT masked
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| 69 | get_restfreqs - get the current list of rest frequencies
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| 70 | set_restfreqs - set a list of rest frequencies
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| 71 | shift_refpix - shift the reference pixel of the IFs
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| 72 | set_spectrum - overwrite the spectrum for a given row
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| 73 | get_spectrum - retrieve the spectrum for a given
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| 74 | get_mask - retrieve the mask for a given
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| 75 | flag - flag selected channels in the data
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| 76 | lag_flag - flag specified frequency in the data
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| 77 | save - save the scantable to disk as either 'ASAP',
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| 78 | 'SDFITS' or 'ASCII'
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| 79 | nbeam,nif,nchan,npol - the number of beams/IFs/Pols/Chans
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| 80 | nscan - the number of scans in the scantable
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| 81 | nrow - the number of spectra in the scantable
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| 82 | history - print the history of the scantable
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| 83 | get_fit - get a fit which has been stored witnh the data
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| 84 | average_time - return the (weighted) time average of a scan
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| 85 | or a list of scans
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| 86 | average_pol - average the polarisations together.
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| 87 | average_beam - average the beams together.
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| 88 | convert_pol - convert to a different polarisation type
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| 89 | auto_quotient - return the on/off quotient with
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| 90 | automatic detection of the on/off scans (closest
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| 91 | in time off is selected)
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| 92 | mx_quotient - Form a quotient using MX data (off beams)
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| 93 | scale, *, / - return a scan scaled by a given factor
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| 94 | add, + - return a scan with given value added
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| 95 | sub, - - return a scan with given value subtracted
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| 96 | bin - return a scan with binned channels
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| 97 | resample - return a scan with resampled channels
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| 98 | smooth - return the spectrally smoothed scan
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| 99 | reshape - cut out channel range
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| 100 | poly_baseline - fit a polynomial baseline to all Beams/IFs/Pols
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| 101 | auto_poly_baseline - automatically fit a polynomial baseline
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| 102 | recalc_azel - recalculate azimuth and elevation based on
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| 103 | the pointing
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| 104 | gain_el - apply gain-elevation correction
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| 105 | opacity - apply opacity correction
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| 106 | convert_flux - convert to and from Jy and Kelvin brightness
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| 107 | units
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| 108 | freq_align - align spectra in frequency frame
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| 109 | invert_phase - Invert the phase of the cross-correlation
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| 110 | swap_linears - Swap XX and YY (or RR LL)
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| 111 | rotate_xyphase - rotate XY phase of cross correlation
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| 112 | rotate_linpolphase - rotate the phase of the complex
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| 113 | polarization O=Q+iU correlation
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| 114 | freq_switch - perform frequency switching on the data
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| 115 | stats - Determine the specified statistic, e.g. 'min'
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| 116 | 'max', 'rms' etc.
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| 117 | stddev - Determine the standard deviation of the current
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| 118 | beam/if/pol
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| 119 | get_row_selector - get the selection object for a specified row
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| 120 | number
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| 121 | [Selection]
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| 122 | selector - a selection object to set a subset of a scantable
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| 123 | set_scans - set (a list of) scans by index
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| 124 | set_cycles - set (a list of) cycles by index
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| 125 | set_beams - set (a list of) beamss by index
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| 126 | set_ifs - set (a list of) ifs by index
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| 127 | set_polarisations - set (a list of) polarisations by name
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| 128 | or by index
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| 129 | set_names - set a selection by name (wildcards allowed)
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| 130 | set_tsys - set a selection by tsys thresholds
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| 131 | set_query - set a selection by SQL-like query, e.g. BEAMNO==1
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| 132 | ( also get_ functions for all these )
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| 133 | reset - unset all selections
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| 134 | + - merge two selections
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| 135 |
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| 136 | [Math] Mainly functions which operate on more than one scantable
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| 137 |
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| 138 | average_time - return the (weighted) time average
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| 139 | of a list of scans
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| 140 | quotient - return the on/off quotient
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| 141 | simple_math - simple mathematical operations on two scantables,
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| 142 | 'add', 'sub', 'mul', 'div'
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| 143 | quotient - build quotient of the given on and off scans
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| 144 | (matched pairs and 1 off - n on are valid)
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| 145 | merge - merge a list of scantables
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| 146 |
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| 147 | [Line Catalog]
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| 148 | linecatalog - a linecatalog wrapper, taking an ASCII or
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| 149 | internal format table
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| 150 | summary - print a summary of the current selection
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| 151 | set_name - select a subset by name pattern, e.g. '*OH*'
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| 152 | set_strength_limits - select a subset by line strength limits
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| 153 | set_frequency_limits - select a subset by frequency limits
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| 154 | reset - unset all selections
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| 155 | save - save the current subset to a table (internal
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| 156 | format)
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| 157 | get_row - get the name and frequency from a specific
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| 158 | row in the table
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| 159 | [Fitting]
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| 160 | fitter
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| 161 | auto_fit - return a scan where the function is
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| 162 | applied to all Beams/IFs/Pols.
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| 163 | commit - return a new scan where the fits have been
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| 164 | commited.
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| 165 | fit - execute the actual fitting process
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| 166 | store_fit - store the fit parameters in the data (scantable)
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| 167 | get_chi2 - get the Chi^2
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| 168 | set_scan - set the scantable to be fit
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| 169 | set_function - set the fitting function
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| 170 | set_parameters - set the parameters for the function(s), and
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| 171 | set if they should be held fixed during fitting
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| 172 | set_gauss_parameters - same as above but specialised for individual
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| 173 | gaussian components
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| 174 | get_parameters - get the fitted parameters
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| 175 | plot - plot the resulting fit and/or components and
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| 176 | residual
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| 177 | [Plotter]
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| 178 | asapplotter - a plotter for asap, default plotter is
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| 179 | called 'plotter'
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| 180 | plot - plot a scantable
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| 181 | plot_lines - plot a linecatalog overlay
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| 182 | plotazel - plot azimuth and elevation versus time
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| 183 | plotpointing - plot telescope pointings
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| 184 | save - save the plot to a file ('png' ,'ps' or 'eps')
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| 185 | set_mode - set the state of the plotter, i.e.
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| 186 | what is to be plotted 'colour stacked'
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| 187 | and what 'panelled'
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| 188 | set_selection - only plot a selected part of the data
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| 189 | set_range - set a 'zoom' window [xmin,xmax,ymin,ymax]
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| 190 | set_legend - specify user labels for the legend indeces
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| 191 | set_title - specify user labels for the panel indeces
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| 192 | set_abcissa - specify a user label for the abcissa
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| 193 | set_ordinate - specify a user label for the ordinate
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| 194 | set_layout - specify the multi-panel layout (rows,cols)
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| 195 | set_colors - specify a set of colours to use
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| 196 | set_linestyles - specify a set of linestyles to use if only
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| 197 | using one color
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| 198 | set_font - set general font properties, e.g. 'family'
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| 199 | set_histogram - plot in historam style
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| 200 | set_mask - set a plotting mask for a specific polarization
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| 201 | text - draw text annotations either in data or relative
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| 202 | coordinates
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| 203 | arrow - draw arrow annotations either in data or relative
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| 204 | coordinates
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| 205 | axhline,axvline - draw horizontal/vertical lines
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| 206 | axhspan,axvspan - draw horizontal/vertical regions
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| 207 | annotate - draw an arrow with label
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| 208 | create_mask - create a scnatble mask interactively
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| 209 |
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| 210 | xyplotter - matplotlib/pylab plotting functions
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| 211 |
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| 212 | [General]
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| 213 | commands - this command
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| 214 | print - print details about a variable
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| 215 | list_scans - list all scantables created by the user
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| 216 | list_files - list all files readable by asap (default rpf)
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| 217 | del - delete the given variable from memory
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| 218 | range - create a list of values, e.g.
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| 219 | range(3) = [0,1,2], range(2,5) = [2,3,4]
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| 220 | help - print help for one of the listed functions
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| 221 | execfile - execute an asap script, e.g. execfile('myscript')
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| 222 | list_rcparameters - print out a list of possible values to be
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| 223 | put into $HOME/.asaprc
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| 224 | rc - set rc parameters from within asap
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| 225 | mask_and,mask_or,
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| 226 | mask_not - boolean operations on masks created with
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| 227 | scantable.create_mask
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| 228 | skydip - gain opacity values from a sky dip observation
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| 229 | opacity_model - compute opacities fro given frequencies based on
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| 230 | atmospheric model
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| 231 |
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| 232 | Note:
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| 233 | How to use this with help:
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| 234 | # function 'summary'
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| 235 | [xxx] is just a category
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| 236 | Every 'sub-level' in this list should be replaces by a '.' Period when
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| 237 | using help
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| 238 | Example:
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| 239 | ASAP> help scantable # to get info on ths scantable
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| 240 | ASAP> help scantable.summary # to get help on the scantable's
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| 241 | ASAP> help average_time
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| 242 |
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| 243 | """
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| 244 | if rcParams['verbose']:
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| 245 | try:
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| 246 | from IPython.genutils import page as pager
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| 247 | except ImportError:
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| 248 | from pydoc import pager
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| 249 | pager(x)
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| 250 | else:
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| 251 | print x
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| 252 | return
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