= ASAP commands = AT the prompt type {{{ commands() }}} Here is the output {{{ [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 (by name or number) drop_scan - drops a specific scan out of a scantable (by number) set_selection - set a new subselection of the data get_selection - get the current selection object summary - print info about the scantable contents 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_inttime - get the integration time get_sourcename - get the source names of the scans get_azimuth - get the azimuth of the scans get_elevation - get the elevation of the scans get_parangle - get the parallactic angle of the scans get_coordinate - get the spectral coordinate for the given row, which can be used for coordinate conversions get_weather - get the weather condition parameters get_unit - get the current 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) get_column_names - get the names of the columns in the scantable for use with selector.set_query 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_dirframe - set the frame for the direction on the sky set_instrument - set the instrument name set_feedtype - set the feed type get_fluxunit - get the brightness flux unit set_fluxunit - set the brightness flux unit set_sourcetype - set the type of the source - source or reference 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 shift_refpix - shift the reference pixel of the IFs set_spectrum - overwrite the spectrum for a given row get_spectrum - retrieve the spectrum for a given get_mask - retrieve the mask for a given flag - flag selected channels in the data lag_flag - flag specified frequency in the data save - save the scantable to disk as either 'ASAP', 'SDFITS' or 'ASCII' nbeam,nif,nchan,npol - the number of beams/IFs/Pols/Chans nscan - the number of scans in the scantable nrow - the number of spectra in the scantable 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. average_beam - average the beams together. convert_pol - convert to a different polarisation type auto_quotient - return the on/off quotient with automatic detection of the on/off scans (closest in time off is selected) mx_quotient - Form a quotient using MX data (off beams) scale, *, / - return a scan scaled by a given factor add, + - return a scan with given value added sub, - - return a scan with given value subtracted 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 recalc_azel - recalculate azimuth and elevation based on the pointing 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 invert_phase - Invert the phase of the cross-correlation swap_linears - Swap XX and YY (or RR LL) rotate_xyphase - rotate XY phase of cross correlation rotate_linpolphase - rotate the phase of the complex polarization O=Q+iU correlation freq_switch - perform frequency switching on the data stats - Determine the specified statistic, e.g. 'min' 'max', 'rms' etc. stddev - Determine the standard deviation of the current beam/if/pol get_row_selector - get the selection object for a specified row number [Selection] selector - a selection object to set a subset of a scantable set_scans - set (a list of) scans by index set_cycles - set (a list of) cycles by index set_beams - set (a list of) beamss by index set_ifs - set (a list of) ifs by index set_polarisations - set (a list of) polarisations by name or by index set_names - set a selection by name (wildcards allowed) set_tsys - set a selection by tsys thresholds set_query - set a selection by SQL-like query, e.g. BEAMNO==1 ( also get_ functions for all these ) reset - unset all selections + - merge two selections [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' quotient - build quotient of the given on and off scans (matched pairs and 1 off - n on are valid) merge - merge a list of scantables [Line Catalog] linecatalog - a linecatalog wrapper, taking an ASCII or internal format table summary - print a summary of the current selection set_name - select a subset by name pattern, e.g. '*OH*' set_strength_limits - select a subset by line strength limits set_frequency_limits - select a subset by frequency limits reset - unset all selections save - save the current subset to a table (internal format) get_row - get the name and frequency from a specific row in the table [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 parameters 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 scantable plot_lines - plot a linecatalog overlay plotazel - plot azimuth and elevation versus time plotpointing - plot telescope pointings 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_selection - only plot a selected part of the data set_range - set a 'zoom' window [xmin,xmax,ymin,ymax] set_legend - specify user labels for the legend indeces set_title - specify user labels for the panel indeces set_abcissa - specify a user label for the abcissa set_ordinate - specify a user label for the ordinate set_layout - specify the multi-panel layout (rows,cols) set_colors - specify a set of colours to use set_linestyles - specify a set of linestyles to use if only using one color set_font - set general font properties, e.g. 'family' set_histogram - plot in historam style set_mask - set a plotting mask for a specific polarization text - draw text annotations either in data or relative coordinates arrow - draw arrow annotations either in data or relative coordinates axhline,axvline - draw horizontal/vertical lines axhspan,axvspan - draw horizontal/vertical regions annotate - draw an arrow with label create_mask - create a scnatble mask interactively xyplotter - matplotlib/pylab plotting functions [General] commands - this command print - print details about a variable list_scans - list all scantables created by the user list_files - list all files readable by asap (default rpf) 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 rc - set rc parameters from within asap mask_and,mask_or, mask_not - boolean operations on masks created with scantable.create_mask skydip - gain opacity values from a sky dip observation opacity_model - compute opacities fro given frequencies based on atmospheric model 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 }}}