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: http://www.atnf.csiro.au/computing/software/asap/cookbook/node66.html
Дата изменения: Unknown Дата индексирования: Tue Feb 5 06:53:04 2013 Кодировка: Поисковые слова: comet |
[The scan container] scantable - a container for integrations/scans (can open asap/rpfits/sdfits and ms files) copy - returns a copy of a scan get_scan - gets a specific scan out of a scantable summary - print info about the scantable contents set_cursor - set a specific Beam/IF/Pol 'cursor' for further use get_cursor - print out the current cursor position stats - get specified statistic of the spectra in the scantable stddev - get the standard deviation of the spectra in the scantable get_tsys - get the TSys get_time - get the timestamps of the integrations get_unit - get the currnt unit set_unit - set the abcissa unit to be used from this point on get_abcissa - get the abcissa values and name for a given row (time) set_freqframe - set the frame info for the Spectral Axis (e.g. 'LSRK') set_doppler - set the doppler to be used from this point on set_instrument - set the instrument name get_fluxunit - get the brightness flux unit set_fluxunit - set the brightness flux unit create_mask - return an mask in the current unit for the given region. The specified regions are NOT masked get_restfreqs - get the current list of rest frequencies set_restfreqs - set a list of rest frequencies lines - print list of known spectral lines flag_spectrum - flag a whole Beam/IF/Pol save - save the scantable to disk as either 'ASAP' or 'SDFITS' nbeam,nif,nchan,npol - the number of beams/IFs/Pols/Chans history - print the history of the scantable get_fit - get a fit which has been stored witnh the data average_time - return the (weighted) time average of a scan or a list of scans average_pol - average the polarisations together. The dimension won't be reduced and all polarisations will contain the averaged spectrum. auto_quotient - return the on/off quotient with automatic detection of the on/off scans quotient - return the on/off quotient scale - return a scan scaled by a given factor add - return a scan with given value added bin - return a scan with binned channels resample - return a scan with resampled channels smooth - return the spectrally smoothed scan poly_baseline - fit a polynomial baseline to all Beams/IFs/Pols auto_poly_baseline - automatically fit a polynomial baseline gain_el - apply gain-elevation correction opacity - apply opacity correction convert_flux - convert to and from Jy and Kelvin brightness units freq_align - align spectra in frequency frame rotate_xyphase - rotate XY phase of cross correlation rotate_linpolphase - rotate the phase of the complex polarization O=Q+iU correlation [Math] Mainly functions which operate on more than one scantable average_time - return the (weighted) time average of a list of scans quotient - return the on/off quotient simple_math - simple mathematical operations on two scantables, 'add', 'sub', 'mul', 'div' [Fitting] fitter auto_fit - return a scan where the function is applied to all Beams/IFs/Pols. commit - return a new scan where the fits have been commited. fit - execute the actual fitting process store_fit - store the fit paramaters in the data (scantable) get_chi2 - get the Chi^2 set_scan - set the scantable to be fit set_function - set the fitting function set_parameters - set the parameters for the function(s), and set if they should be held fixed during fitting set_gauss_parameters - same as above but specialised for individual gaussian components get_parameters - get the fitted parameters plot - plot the resulting fit and/or components and residual [Plotter] asapplotter - a plotter for asap, default plotter is called 'plotter' plot - plot a (list of) scantable save - save the plot to a file ('png' ,'ps' or 'eps') set_mode - set the state of the plotter, i.e. what is to be plotted 'colour stacked' and what 'panelled' set_cursor - only plot a selected part of the data set_range - set a 'zoom' window set_legend - specify user labels for the legend indeces set_title - specify user labels for the panel indeces set_ordinate - specify a user label for the ordinate set_abcissa - specify a user label for the abcissa set_layout - specify the multi-panel layout (rows,cols) [Reading files] reader - access rpfits/sdfits files read - read in integrations summary - list info about all integrations [General] commands - this command print - print details about a variable list_scans - list all scantables created bt the user del - delete the given variable from memory range - create a list of values, e.g. range(3) = [0,1,2], range(2,5) = [2,3,4] help - print help for one of the listed functions execfile - execute an asap script, e.g. execfile('myscript') list_rcparameters - print out a list of possible values to be put into \$HOME/.asaprc mask_and,mask_or, mask_not - boolean operations on masks created with scantable.create_mask Note: How to use this with help: # function 'summary' [xxx] is just a category Every 'sub-level' in this list should be replaces by a '.' Period when using help Example: ASAP> help scantable # to get info on ths scantable ASAP> help scantable.summary # to get help on the scantable's ASAP> help average_time