| [664] | 1 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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| 3 | <head>
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| 4 | <?php include("base.inc"); ?>
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| 5 | <title>ASAP - ATNF Spectral line Analysis Package</title>
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| 7 | <meta name="DC.Creator" lang="en" content="personalName=Marquarding,Malte" />
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| 8 | <meta name="ATNF.Maintainer" content="contactName=Marquarding,Malte" />
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| 9 | <meta name="DC.Title" lang="en" content="Homepage of Malte Marquarding" />
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| 10 | <meta name="DC.Title.alt" lang="en" content="" />
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| 11 | <meta name="DC.Subject" lang="en" content="spectral line" />
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| 12 | <meta name="DC.Description" lang="en"
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| 13 | content="Just some links and conatact details" />
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| 14 | <meta name="DC.Date.created" scheme="ISO8601" content="2004-11-12" />
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| 15 | <meta name="ATNF.Site" content="Marsfield" />
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| 38 | title_crumbs("/computing/software/");
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| 39 | ?>
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| 40 | <!-- Start Content -->
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| 41 | <h1><a href="index.html">ASAP</a> 'commands'</h1>
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| 42 | <pre class="commands">
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| [758] | 43 | ASAP> commands
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| 44 | ----> commands()
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| [664] | 45 |
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| 46 | [The scan container]
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| 47 | scantable - a container for integrations/scans
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| 48 | (can open asap/rpfits/sdfits and ms files)
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| 49 | copy - returns a copy of a scan
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| 50 | get_scan - gets a specific scan out of a scantable
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| [758] | 51 | (by name or number)
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| [664] | 52 | summary - print info about the scantable contents
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| 53 | set_cursor - set a specific Beam/IF/Pol 'cursor' for
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| 54 | further use
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| 55 | get_cursor - print out the current cursor position
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| 56 | stats - get specified statistic of the spectra in
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| 57 | the scantable
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| 58 | stddev - get the standard deviation of the spectra
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| 59 | in the scantable
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| 60 | get_tsys - get the TSys
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| 61 | get_time - get the timestamps of the integrations
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| [758] | 62 | get_sourcename - get the source names of the scans
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| [664] | 63 | get_unit - get the currnt unit
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| 64 | set_unit - set the abcissa unit to be used from this
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| 65 | point on
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| 66 | get_abcissa - get the abcissa values and name for a given
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| 67 | row (time)
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| 68 | set_freqframe - set the frame info for the Spectral Axis
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| 69 | (e.g. 'LSRK')
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| 70 | set_doppler - set the doppler to be used from this point on
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| 71 | set_instrument - set the instrument name
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| 72 | get_fluxunit - get the brightness flux unit
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| 73 | set_fluxunit - set the brightness flux unit
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| 74 | create_mask - return an mask in the current unit
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| 75 | for the given region. The specified regions
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| 76 | are NOT masked
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| 77 | get_restfreqs - get the current list of rest frequencies
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| 78 | set_restfreqs - set a list of rest frequencies
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| 79 | lines - print list of known spectral lines
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| 80 | flag_spectrum - flag a whole Beam/IF/Pol
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| 81 | save - save the scantable to disk as either 'ASAP'
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| 82 | or 'SDFITS'
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| 83 | nbeam,nif,nchan,npol - the number of beams/IFs/Pols/Chans
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| [758] | 84 | nscan - the number of scans in the scantable
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| 85 | nrow - te number of integrations in the scantable
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| [664] | 86 | history - print the history of the scantable
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| 87 | get_fit - get a fit which has been stored witnh the data
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| 88 | average_time - return the (weighted) time average of a scan
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| 89 | or a list of scans
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| 90 | average_pol - average the polarisations together.
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| 91 | The dimension won't be reduced and
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| 92 | all polarisations will contain the
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| 93 | averaged spectrum.
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| [680] | 94 | auto_quotient - return the on/off quotient with
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| 95 | automatic detection of the on/off scans
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| [758] | 96 | (matched pairs and 1 off - n on)
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| [664] | 97 | quotient - return the on/off quotient
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| 98 | scale - return a scan scaled by a given factor
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| 99 | add - return a scan with given value added
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| 100 | bin - return a scan with binned channels
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| 101 | resample - return a scan with resampled channels
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| 102 | smooth - return the spectrally smoothed scan
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| 103 | poly_baseline - fit a polynomial baseline to all Beams/IFs/Pols
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| 104 | auto_poly_baseline - automatically fit a polynomial baseline
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| [775] | 105 | recalc_azel - recalculate azimuth and elevation based on
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| 106 | the pointing
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| [664] | 107 | gain_el - apply gain-elevation correction
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| 108 | opacity - apply opacity correction
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| 109 | convert_flux - convert to and from Jy and Kelvin brightness
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| 110 | units
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| 111 | freq_align - align spectra in frequency frame
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| 112 | rotate_xyphase - rotate XY phase of cross correlation
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| 113 | rotate_linpolphase - rotate the phase of the complex
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| 114 | polarization O=Q+iU correlation
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| [758] | 115 | freq_switch - perform frequency switching on the data
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| 116 | stats - Determine the specified statistic, e.g. 'min'
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| 117 | 'max', 'rms' etc.
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| 118 | stddev - Determine the standard deviation of the current
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| 119 | beam/if/pol
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| 120 |
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| [664] | 121 | [Math] Mainly functions which operate on more than one scantable
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| 122 |
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| 123 | average_time - return the (weighted) time average
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| 124 | of a list of scans
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| 125 | quotient - return the on/off quotient
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| 126 | simple_math - simple mathematical operations on two scantables,
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| 127 | 'add', 'sub', 'mul', 'div'
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| 128 | [Fitting]
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| 129 | fitter
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| 130 | auto_fit - return a scan where the function is
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| 131 | applied to all Beams/IFs/Pols.
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| 132 | commit - return a new scan where the fits have been
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| 133 | commited.
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| 134 | fit - execute the actual fitting process
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| 135 | store_fit - store the fit paramaters in the data (scantable)
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| 136 | get_chi2 - get the Chi^2
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| 137 | set_scan - set the scantable to be fit
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| 138 | set_function - set the fitting function
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| 139 | set_parameters - set the parameters for the function(s), and
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| 140 | set if they should be held fixed during fitting
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| 141 | set_gauss_parameters - same as above but specialised for individual
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| 142 | gaussian components
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| 143 | get_parameters - get the fitted parameters
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| 144 | plot - plot the resulting fit and/or components and
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| 145 | residual
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| 146 | [Plotter]
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| 147 | asapplotter - a plotter for asap, default plotter is
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| 148 | called 'plotter'
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| 149 | plot - plot a (list of) scantable
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| 150 | save - save the plot to a file ('png' ,'ps' or 'eps')
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| 151 | set_mode - set the state of the plotter, i.e.
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| 152 | what is to be plotted 'colour stacked'
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| 153 | and what 'panelled'
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| 154 | set_cursor - only plot a selected part of the data
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| [758] | 155 | set_range - set a 'zoom' window [xmin,xmax,ymin,ymax]
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| [664] | 156 | set_legend - specify user labels for the legend indeces
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| 157 | set_title - specify user labels for the panel indeces
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| [758] | 158 | set_abcissa - specify a user label for the abcissa
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| [664] | 159 | set_ordinate - specify a user label for the ordinate
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| 160 | set_layout - specify the multi-panel layout (rows,cols)
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| [758] | 161 | set_colors - specify a set of colours to use
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| 162 | set_linestyles - specify a set of linestyles to use if only
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| 163 | using one color
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| 164 | set_mask - set a plotting mask for a specific polarization
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| [664] | 165 |
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| 166 | [Reading files]
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| 167 | reader - access rpfits/sdfits files
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| 168 | read - read in integrations
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| 169 | summary - list info about all integrations
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| 170 |
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| 171 | [General]
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| 172 | commands - this command
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| 173 | print - print details about a variable
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| 174 | list_scans - list all scantables created bt the user
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| 175 | del - delete the given variable from memory
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| 176 | range - create a list of values, e.g.
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| 177 | range(3) = [0,1,2], range(2,5) = [2,3,4]
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| 178 | help - print help for one of the listed functions
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| 179 | execfile - execute an asap script, e.g. execfile('myscript')
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| 180 | list_rcparameters - print out a list of possible values to be
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| 181 | put into $HOME/.asaprc
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| 182 | mask_and,mask_or,
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| 183 | mask_not - boolean operations on masks created with
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| 184 | scantable.create_mask
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| 185 |
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| 186 | Note:
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| 187 | How to use this with help:
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| 188 | # function 'summary'
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| 189 | [xxx] is just a category
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| 190 | Every 'sub-level' in this list should be replaces by a '.' Period when
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| 191 | using help
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| 192 | Example:
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| 193 | ASAP> help scantable # to get info on ths scantable
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| 194 | ASAP> help scantable.summary # to get help on the scantable's
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| 195 | ASAP> help average_time
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| 196 |
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| [758] | 197 |
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| [664] | 198 | </pre>
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| 199 | <!-- End Content -->
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