; TASK ;--------------------------------------------------------------- ;! Information about TASK ;# INFORMATION GENERAL ;----------------------------------------------------------------------- ;; Copyright (C) 1995-2016 ;; Associated Universities, Inc. Washington DC, USA. ;; ;; This program is free software; you can redistribute it and/or ;; modify it under the terms of the GNU General Public License as ;; published by the Free Software Foundation; either version 2 of ;; the License, or (at your option) any later version. ;; ;; This program is distributed in the hope that it will be useful, ;; but WITHOUT ANY WARRANTY; without even the implied warranty of ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;; GNU General Public License for more details. ;; ;; You should have received a copy of the GNU General Public ;; License along with this program; if not, write to the Free ;; Software Foundation, Inc., 675 Massachusetts Ave, Cambridge, ;; MA 02139, USA. ;; ;; Correspondence concerning AIPS should be addressed as follows: ;; Internet email: aipsmail@nrao.edu. ;; Postal address: AIPS Project Office ;; National Radio Astronomy Observatory ;; 520 Edgemont Road ;; Charlottesville, VA 22903-2475 USA ;----------------------------------------------------------------------- TASK LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC ---------------------------------------------------------------- TASKS Type: General type of POPS symbol (not in symbol table) Use: Tasks are separate programs which may be started by AIPS and which receive their input parameters from AIPS. In the interactive AIPS, tasks run asynchronously from AIPS. In the batch AIPS, the language processor waits for each task to finish before starting another one. Grammar: TASK = 'name' ; GO will cause the task whose name is assigned to the string adverb TASK to be started. Note: the name should have no leading blanks and should be no longer than 5 characters. Alternative grammar: GO name ; where name is the name of the task to be run. Related adverbs: TASK Task name DOWAIT On "GO", wait for task completion before returning to AIPS control VERSION Version of task to be executed. Related verbs: GO Initiate a shed task HELP List information about a task INP List adverb values for a task INPUTS Same as INP but also written to MSG file SPY Inquire which tasks are active WAITTASK Suspend AIPS operation until a specific task is complete ABORTASK Kill a task immediately TGET Get adverb values from last execution of TASK TPUT Save adverb values without execution of TASK TGINDEX List all TGET/SAVE files **************************************************************** List of TASKs ACCOR Corrects cross amplitudes using auto correlation measurements ACFIT Determine antenna gains from autocorrelations ACLIP edits suto-corr data for amplitudes, phases, and weights out of range ACSCL Corrects cross amplitudes using auto correlation measurements ADDIF Adds an IF axis to a uv data set AFARS Is used after FARS to determine Position and Value of the maximum AFILE sorts and edits MkIII correlator A-file. AHIST Task to convert image intensities by adaptive histogram AIPSB AIPS main program for executing batch jobs AIPSC AIPS main program for testing and queuing batch jobs AIPS AIPS main program for interactive use ALVAR plots the Allan Variance statistic of a UV data set ALVPR prints statistics on the Allan Variance of a UV data set ANBPL plots and prints uv data converted to antenna based values ANCAL Places antenna-based Tsys and gain corrections in CL table ANTAB Read amplitude calibration information into AIPS APCAL Apply TY and GC tables to generate an SN table APCLN Deconvolves images with CLEAN algorithm APGPS Apply GPS-derived ionospheric corrections APGS deconvolves image with Gerchberg-Saxton algorithm APVC Deconvolves images with van Cittert algorithm ATLOD Reads ATCA data in RPFITS dormat into AIPS ATMCA Determines delay/phase gradient from calibrator observations AVER Averages over time UV data sets in 'BT' order AVSPC Averages uv-data in the frequency domain AVTP Positions tape to desired file BAKLD reads all files of a catalog entry from BAKTP tape BAKTP writes all files of a catalog entry to tape in host format BASRM Task to remove a spectral baseline from total power spectra BATER stand-alone program to prepare and submit batch jobs BDAPL Applies a BD table to another data set BDEPO computes depolarization due to rotation measure gradients BDF2AIPS Read EVLA ASDM/BDF data into AIPS BLANK blanks out selected, e.g. non-signal, portions of an image BLAPP applies baseline-based fringe solutions a la BLAPP BLAVG Average cross-polarized UV data over baselines. BLCAL Compute closure offset corrections BLCHN Compute closure offset corrections on a channel-by-channel basis BLING find residual rate and delay on individual baselines BLOAT converts line data to greater number channels BLSUM sums images over irregular sub-images, displays spectra BLWUP Blow up an image by any positive integer factor. BOXES Adds Clean boxes to BOXFILE around sources from a list BPASS computes spectral bandpass correction table BPCOR Correct BP table. BPEDT Interactive TV task to edit uv data based on BP tables BPERR Print and plot BPASS closure outputs BPLOT Plots bandpass tables in 2 dimensions as function of time BPSMO Smooths or interpolates bandpass tables to regular times BPWAY Determines channel-dependent relative weights BPWGT Calibrates data and scales weights by bandpass correction BSAVG Task to do an FFT-weighted sum of beam-switched images BSCAN seeks best scan to use for phase cal, fringe search, .. BSCLN Hogbom Clean on beam-switched difference image BSCOR Combines two beam-switched images BSFIX Corrects the ra/dec offsets recorded by the 12m BSGEO Beam-switched Az-El image to RA-Dec image translation BSGRD Task to image beam-switched single-dish data BSMAP images weak sources with closure phases BSMOD creates single-dish UV beam-switched data with model sources BSPRT print BS tables BSROT modifies SD beam-switch continuum data for error in throw BSTST Graphical display of solutions to frequency-switched data CALIB determines antenna calibration: complex gain CALRD Reads model-image FITS file CALWR writes calibrator images w CC files to FITS disk files CANDY user-definable (paraform) task to create an AIPS image CANPL translates a plot file to a Canon printer/plotter CAPLT plots closure amplitude and model from CC file CC2IM Make model image from a CC file CCEDT Select CC components in BOXes and above mininum flux. CCFND prints the contents of a Clean Components extension file. CCGAU Converts point CLEAN components to Gaussians CCMOD generates clean components to fit specified source model CCMRG sums all clean components at the same pixel CCNTR generate a contour plot file from an image CCRES Removes or restores a CC file to a map with a gaussian beam. CCSEL Select signifigant CC components CENTR modifies UV data to center the reference channel CHKFC makes images of Clean boxes from Boxfile CL2HF Convert CL table to HF table CLCAL merges and smooths SN tables, applies them to CL tables CLCOP copy CL/SN file calibration between polarizations or IFs CLCOR applies user-selected corrections to the calibration CL table CLINV copy CL/SN file inverting the calibration CLIP edits data based on amplitudes, phases, and weights out of range CLIPM CLPLT plots closure phase and model from CC file CLSMO smooths a calibration CL table CLVLB Corrects CL table gains for pointing offsets in VLBI data CNTR generate a contour plot file or TV plot from an image COHER Baseline Phase coherence measurement COMAP_DO MX adverbs not changed by COMAP COMAP Procedure to MAP and Self-Calibrate a UVDATA set COMAP_MX MX adverbs not changed by COMAP COMAP_NA Procedure to MAP and Self-Calibrate a UVDATA set COMAP_UV Procedure to MAP and Self-Calibrate a UVDATA set COMB combines two images by a variety of mathematical methods CONFI Optimize array configuration by minimum side lobes CONPL Plots AIPS gridding convolution functions CONVL convolves an image with a gaussian or another image CORER calculates correlator statistics and flags bad ones CORFQ corrects uvw for incorrect observing frequency CPASS computes polynomial spectral bandpass correction table CPYRT replaces history with readme file, inserts copyright CSCOR applies specified corrections to CS tables CUBIT Model a galaxy's density and velocity distribution from full cube CVEL shifts spectral-line UV data to a given velocity CXCLN Complex Hogbom CLEAN DAYFX Fixes day number problems left by FILLM DBAPP appends one or more data sets to the output data set DBCON concatenates two UV data sets DCONV deconvolves a gaussian from an image DECOR Measures the decorrelation between channels and IF of uv data DEFLG edits data based on decorrelation over channels and time DELZN Determines residual atmosphere depth at zenith and clock errors DESCM copies a portion of a UV data set DFCOR applies user-selected corrections to the calibration CL table DFQID modifies UV data changing the indicated FQIDs DFTPL plots DFT of a UV data set at arbitrary point versus time DIFRL divides the RR data by LL data DIFUV Outputs the difference of two matching input uv data sets DISKU shows disk use by one or all users DQUAL Rearranges source list, dropping qualifiers DRCHK stand-alone program checks system setup files for consistency DSKEW Geometric interpolation correction for skew DSORC copies a data set elliminating some source numbers DSTOK Drops the cross-hand polarizations DTCHK Task to check results of a test using simulated data. DTSIM Generate fake UV data DTSUM Task to provide a summary of the contents of a dataset EDITA Interactive TV task to edit uv data based on TY/SY/SN/CL tables EDITR Interactive baseline-oriented visibility editor using the TV ELINT Determines and removes gain dependence on elevation EVASN Evaluates statistics in SN/CL tables EVAUV Subtracts & divides a model into UV data, does statistics on results EXTAB exports AIPS table data as tab-separated text FACES makes images of catalog sources for initial calibration FARAD add ionospheric Faraday rotation to CL table FARS Faraday rotation synthesys based on the brightness vs wavelength FETCH Reads an image from an external text file. FFT takes Fourier Transform of an image or images FGCNT Counts samples comparing two flag tables FGDIF Compares affect of 2 FG tables FGPLT Plots selected contents of FG table FGTAB Plots selected contents of FG table FILIT Interactive BOXFILE editing with facet images FILLM reads VLA on-line/archive format uv data tapes (post Jan 88) FILLR reads old VLA on-line-system tapes into AIPS FINDR Find normal values for a uv data set FIT2A reads the fits input file and records it to the output ascii file FITAB writes images / uv data w extensions to tape in FITS format FITLD Reads FITS files to load images or UV (IDI or UVFITS) data to disk FITTP writes images / uv data w extensions to tape in FITS format FIXAL least squares fit aliasing function and remove FIXAN fixes the contents of the ANtenna extension file FIXBX converts a BOXFILE to another for input to IMAGR FIXRL correctes right vs left polarizations for a list of antennas FIXWT Modify weights to reflect amplitude scatter of data FLAGR Edit data based on internal RMS, amplitudes, weights FLATN Re-grid multiple fields into one image incl sensitivity FLGIT flags data based on the rms of the spectrum FLOPM reverses the spectral order of UV data, can fix VLA error FQUBE collects n-dimensional images into n+1-dimensional FREQID image FRCAL Faraday rotation self calibration task FRING fringe fit data to determine antenna calibration, delay, rate FRMAP Task to build a map using fringe rate spectra FRPLT Task to plot fringe rate spectra FTFLG interactive flagging of UV data in channel-time using the TV FUDGE modifies UV data with user's algorithm: paraform task FXPOL Corrects VLBA polarization assignments FXTIM fixes start date so all times are positive FXVLA Task to correct VLA data for on-line errors in special cases. FXVLB Builds a CQ table to enable VLBA correlator loss corrections GAL Determine parameters from a velocity field GCPLT Plots gain curves from text files GETJY determines calibrator flux densities GLENS models galaxy gravitational lens acting on 3 component source GPSDL Calculate ionospheric delay and Faraday rotation corrections GREYS plots images as contours over multi-level grey GRIPR standalone program to enter suggestions/complaints to AIPS GSCAT reads Fits Guide star catalog file GSTAR Task to read a Guide Star (UK) table and create an ST table. HA2TI Converts data processed by TI2HA (STUFFER) back to real times HAFIX Recomputes u,v,w when time is hour angle (UVdata is output of TI2HA) HF2SV convert HF tables from FRING/MBDLY to form used by Calc/Solve HFPRT write HF tables from CL2HF HGEOM interpolates image to different gridding and/or geometry HISEQ task to translate image by histogram equalization HLPCLEAN Cleaning tasks - run-time help HLPEDIBP Interactive BP table uv-data editor BPEDT - run-time help HLPEDICL Interactive SN/CL table uv-data editor - run-time help HLPEDIPC Interactive PC table editor PCEDT - run-time help HLPEDISN Interactive SN/CL table (not UV) editor - run-time help HLPEDISS Interactive SY table (not UV) editor - run-time help HLPEDISY Interactive SY table uv-data editor EDITA - run-time help HLPEDITS Interactive TY table (not UV) editor - run-time help HLPEDITY Interactive TY table uv-data editor EDITA - run-time help HLPEDIUV Interactive uv-data editor EDITR - run-time help HLPFILIT Interactive Clean box file editing with image display - run-time help HLPFTFLG Interactive time-channel visibility Editor - run-time help HLPIBLED Interactive Baseline based visibility Editor - run-time help HLPPCFLG Interactive time-channel PC table Editor PCFLG - run-time help HLPPLAYR OOP TV class demonstration task - run-time help HLPRMFIT Polarization fitting task RMFIT - run-time help HLPSCIMG Full-featured image plus self-cal loops, editing - run-time help HLPSCMAP Imaging plus self-cal and editing SCMAP - run-time help HLPSPFLG Interactive time-channel visibility Editor SPFLG - run-time help HLPTVFLG Interactive time-baseline visibility Editor TVFLG - run-time help HLPTVHLD Interactive image display with histogram equalization - run-time help HLPTVHUI Interactive intensity-hue-saturation display - run-time help HLPTVRGB Interactive red-green-blue display - run-time help HLPTVSAD Find & fit Gaussians to an image with interaction - run-time help HLPTVSPC Interactive display of spectra from a cube - run-time help HLPUFLAG Edit uv-data on a grid UFLAG - run-time help HLPWIPER edit uv data from UVPLT-like plot WIPER - run-time help HLPXGAUS Interactive Gaussian fitting task XGAUS - run-time help HLPZEMAN Fits 1-dimensional Zeeman model to data - run-time help HOLGR Read & process holography visibility data to telescope images HOLOG Read & process holography visibility data to telescope images HORUS makes images from unsorted UV data, applying any calibration HUINT make RGB image from images of intensity & hue, like TVHUEINT IBLED Interactive BaseLine based visibility EDitor IM2CC Task to convert an image to multi-facet Clean Components IM2UV converts an image to a visibility data set IMAGR Wide-field and/or wide-frequency Cleaning / imaging task. IMCLP Clip an image to a specified range. IMEAN displays the mean & extrema and plots histogram of an image IMERG merges images of different spatial resolutions IMFIT Fits Gaussians to portions of an image IMFLT fits and removes a background intensity plane from an image IMLHS converts images to luminosity/hue TV display IMLIN Fits and removes continuum emission from cube IMLOD reads tape to load images to disk IMMOD adds images of model objects to an image IMRMS Plot IMEAN rms answers IMTXT Write an image to an external text file. IMVIM plots one image's values against another's INDXH writes index file describing contents of UV data base INDXR writes index file describing contents of UV data base IRING integrates intensity / flux in rings / ellipses ISPEC Plots and prints spectrum of region of a cube JMFIT Fits Gaussians to portions of an image KNTR make a contour/grey plot file from an image w multiple panels KRING fringe fit data to determine antenna calibration, delay, rate LAYER Task to create an RGB image from multiple images LDGPS load GPS data from an ASCII file LGEOM regrids images with rotation, shift using interpolation LISTR prints contents of UV data sets and assoc. calibration tables LOCIT fits antenna locations from SN-table data LPCAL Determines instrumental polarization for UV data LTESS makes mosaic images by linear combination LWPLA translates plot file(s) to a PostScript printer or file M3TAR translate Haystack MKIII VLBI format "A" TAR's into AIPS MANDL creates an image of a subset of the Mandlebrot Set MAPBM Map VLA beam polarization MATCH changes antenna, source, FQ numbers to match a data set MATHS operates on an image with a choice of mathematical functions MBDLY Fits multiband delays from IF phases, updates SN table MCUBE collects n-dimensional images into n+1-dimensional image MEDI combines four images by a variety of mathematical methods MF2ST Task to generate an ST ext. file from Model Fit ext. file MFPRT prints MF tables in a format needed by modelling software MK3IN translate Haystack MKIII VLBI format "A" tapes into AIPS MK3TX extract text files from a MKIII VLBI archive tape MODIM adds images of model objects to image cubes in IQU polarization MODSP adds images of model objects to image cubes in I/V polarization MODVF task to create a warped velocity field MOMFT calculates images of moments of a sub-image MOMNT calculates images of moments along x-axis (vel, freq, ch) MORIF Combines IFs or breaks spectral windows into multiple windows (IFs) MOVE Task to copy or move data from one user to another MSORT Sort a UV dataset into a specified order MULIF Change number of IFs in output MULTI Task to convert single-source to multi-source UV data MWFLT applies linear & non-linear filters to images MX makes images & deconvolves using UV data directly - replaced NANS reads a UV data set and looks for NaNs NINER Applies various 3x3 area operaters to an image. NNLSQ Non-Negative-Least-Squares decomposition of spectrum NOBAT Task to lock lower priority users out of the AP NOIFS makes all IFs into single spectrum OBEDT Task to flag data of orbiting antennas OBPLT Plot columns of an OB table. OBTAB Recalculate orbit parameters and other spacecraft info OFLAG uses on-line flag table information to write a flag table OGEOM Simple image rotation, scaling, and translation OHGEO Geometric interpolation with correction for 3-D effects OMFIT Fits sources and, optionally, a self-cal model to uv data OOSRT Sort a UV dataset into a specified order OOSUB Subtracts/divides a model from/into a uv data base OTFBS Translates on-the-fly continuum SDD format to AIPS UV file OTFIN Lists on-the-fly single-dish SDD format data files OTFUV Translates on-the-fly single-dish SDD format to AIPS UV file PADIM Task to increase image size by padding with some value PANEL Convert HOLGR output to panel adjustment table PASTE Pastes a selected subimage of one image into another. PATGN Task to create a user specified test or primary-beam pattern PBCOR Task to apply or correct an image for a primary beam PBEAM Fits the analytic function to the measured values of the beam PCAL Determines instrumental polarization for UV data PCCOR Corrects phases using PCAL tones data from PC table PCEDT Interactive TV task to edit PC tables PCFIT Finds delays and phases using a PC table PCFLG interactive flagging of Pulse-cal data in channel-TB using the TV PCLOD Reads ascii file containing pulse-cal info to PC table. PCNTR Generate plot file with contours plus polarization vectors PCPLT Plots pulse-cal tables in 2 dimensions as function of time PCVEL shifts spectral-line UV data to a given velocity: planet version PFPL1 Paraform Task to generate a plot file: (does grey scale) PFPL2 Paraform Task to generate a plot file: (slice intensity) PFPL3 Paraform Task to generate a plot file: (does histogram) PGEOM Task to transform an image into polar coordinates. PHASE Baseline Phase coherence measurement PHCLN PHCLN has been removed, use PHAT adverb in APCLN. PHNEG Negates a UV datafile's visibility phase. PHSRF Perform phase-referencing within a spectral line database. PLAYR Verb to load an image into a TV channel PLCUB Task to plot intensity vs x panels on grid of y,z pixels PLOTR Basic task to generate a plot file from text input PLROW Plot intensity of a series of rows with an offset. POLCO Task to correct polarization maps for Ricean bias POLSN Make a SN table from cross polarized fringe fit POSSM Task to plot total and cross-power spectra. PROFL Generates plot file for a profile display. PRTAB prints any table-format extension file PRTAC prints contents and summaries of the accounting file PRTAN prints the contents of the ANtenna extension file PRTCC prints the contents of a Clean Components extension file. PRTIM prints image intensities from an MA catalog entry PRTOF prints on-line flag table information PRTPL Task to send a plot file to the line printer PRTSD prints contents of AIPS single-dish data sets PRTSY Task to print statistics from the SY table PRTTP prints contents of tapes, all supported formats PRTUV prints contents of a visibility (UV) data set QMSPL Task to send a plot file to the QMS printer/plotter QUACK Flags beginning or end portions of UV-data scans QUFIX determines Right minus Left phase difference, corrects cal files QUOUT writes text file of Q, U versus frequency to be used by RLDIF QUXTR extracts text files from Q,U cubes for input to TARS REAMP modifies UV data re-scaling the amplitudes REFLG Attempts to compress a flag table REGRD Regrids an image from one co-ordinate frame to another REIFS Breaks spectral windows into multiple spectral windows (IFs) REMAG Task to replace magic blanks with a user specified value RESEQ Renumber antennas REWAY computes weights based in rms in spectra REWGT modifies UV data re-scaling the weights only RFARS Correct Q/U cubes for Faraday rotation synthesis results RFI Look for RFI in uv data RFLAG Flags data set based on time and freq rms in fringe visibilities RGBMP Task to create an RGB image from the 3rd dim of an image RLCAL Determines instrumental right-left phase versus time (a self-cal) RLCOR corrects a data set for R-L phase differences RLDIF determines Right minus Left phase difference, corrects cal files RLDLY fringe fit data to determine antenna R-L delay difference RM2PL Plots spectrum of a pixel with RMFIT fit RMFIT Fits 1-dimensional polarization spectrum to Q/U cube RM Task to calculate rotation measure and magnetic field RMSD Calculate rms for each pixel using data at the box around the pixel RSPEC Plots and prints spectrum of rms of a cube RSTOR Restores a CC file to a map with a gaussian beam. RTIME Task to test compute times SABOX create box file from source islands in facet images SAD Finds and fits Gaussians to portions of an image SBCOR Task to correct VLBA data for phase shift between USB & LSB SCIMG Full-featured imaging plus self-calibration loop with editing SCLIM operates on an image with a choice of mathematical functions SCMAP Imaging plus self-calibration loop with editing SDCAL Task to apply single dish calibration SDCLN deconvolves image by Clark and then "SDI" cleaning methods SDGRD Task to select and image random-position single-dish data SDIMG Task to select and image random-position single-dish data SDLSF least squares fit to channels and subtracts from SD uv data SDMOD modifies single-dish UV data with model sources SDTUV Task to convert SD table files to UV like data. SDVEL shifts spectral-line single-dish data to a given velocity SERCH Finds line signals in transposed data cube SETAN Reads an ANtenna file info from a text file SETFC makes a BOXFILE for input to IMAGR SETJY Task to enter source info into source (SU) table. SHADO Calculate the shadowing of antennas at the array SHADW Generates the "shadowed" representation of an image SHOUV displays uv data in various ways. SKYVE Regrids a DSS image from one co-ordinate frame to another SL2PL Task to convert a Slice File to a Plot File SLCOL Task to collate slice data and models. SLFIT Task to fit gaussians to slice data. SLICE Task to make a slice file from an image SLPRT Task to print a Slice File SMOTH Task to smooth a subimage from upto a 7-dim. image SNCOP Task to copy SN table averaging some input IFs SNCOR applies user-selected corrections to the calibration SN table SNDUP copies and duplicates SN table from single pol file to dual pol SNEDT Interactive SN/CL/TY/SY table editor using the TV SNFIT Fits parabola to SN amplitudes and plots result SNFLG Writes flagging info based on the contents of SN files SNIFS Plots selected contents of SN, TY, SY, PC or CL files SNP2D Task to convert SN table single-channel phase to delay SNPLT Plots selected contents of SN, TY, PC or CL files SNREF Chooses best reference antenna to minimize R-L differences SNSMO smooths and filters a calibration SN table SOLCL adjust gains for solar data according to nominal sensitivity SOUSP fits source spectral index from SU table or adverbs SPCAL Determines instrumental polzn. for spec. line UV data SPCOR Task to correct an image for a primary beam and spectral index SPECR Spectral regridding task for UV data SPFLG interactive flagging of UV data in channel-TB using the TV SPIXR Fits spectral indexes to each row of an image incl curvature SPLAT Applies calibration and splits or assemble selected sources. SPLIT converts multi-source to single-source UV files w calibration SPMOD Modify UV database by adding a model with spectral lines SQASH Task to collapse several planes in a cube into one plane or row STACK Task to co-add a set of 2-dimensional images with weighting STARS Task to generate an ST ext. file with star positions STEER Task which deconvolves the David Steer way. STESS Task which finds sensitivity in mosaicing STFND Task to find stars in an image and generate an ST table. STFUN Task to calculate a structure function image STRAN Task compares ST tables, find image coordinates (e.g. guide star ) SUBIM Task to select a subimage from up to a 7-dim. image SUFIX modifies source numbers on uv data SUMIM Task to sum overlapping, sequentially-numbered images SUMSQ Task to sum the squared pixel values of overlapping, SWAPR modifies UV data by swapping real and imaginary parts SWPOL Swap polarizations in a UV data base SY2TY Task to generate a TY extension file from an EVLA SY table TABED Task to edit tables TACOP task to copy tables, other extension files TAFFY User definable task to operate on an image TAFLG Flags data in a Table extension file TAMRG Task to merge table rows under specified conditions TAPLT Plots data from a Table extension file TAPPE Task to append 2 tables and merge to output table TARPL Plot output of TARS task TARS Simulation of Faraday rotation synthesis (mainly task FARS) TASAV Task to copy all extension tables to a dummy uv or map file TASRT Task to sort extension tables. TBAVG Time averages data combining all baselines. TBDIF Compare entries in two tables TBIN Reads a text file AIPS table into AIPS TBOUT Writes an AIPS table into a text file for user editting. TBSUB Make a new table from a subset of an old table TBTSK Paraform OOP task for tables TCOPY Tape to tape copy with some disk FITS support TECOR Calculate ionospheric delay and Faraday rotation corrections TFILE sorts and edits MkIII correlator UNIX-based A-file. TI2HA modifies times in UV data to hour angles TIORD checks data for time baseline ordering, displays failures TKPL Task to send a plot file to the TEK TRANS Task to transpose a subimage of an up to 7-dim. image TRUEP determines true antenna polarization from special data sets TVCPS Task to copy a TV screen-image to a PostScript file. TVDIC Task to copy a TV screen-image to a Dicomed film recorder. TVFLG interactive flagging of UV data using the TV TVHLD Task to load an image to the TV with histogram equalization TVHUI make TV image from images of intensity, hue, saturation TVPL Display a plot file on the TV TVRGB make TV image from images of true color (RGB) images TVSAD Finds and fits Gaussians to portions of an image with interaction TVSPC Display spectra from a cube TXPL Displays a plot (PL) file on a terminal or line printer TYAPL undoes and re-does nominal sensitivity application TYCOP copy TY or SY table calibration between IFs TYSMO smooths and filters a calibration TY or SY table UBAVG Baseline dependent time averaging of uv data UFLAG Plots and edits data using a uv-plane grid and the TV UJOIN modifies UV data converting IFs to spectral channels UNCAL sets up tables for uncalibrating Australia Telescope data USUBA Assign subarrays within a uv-data file UTESS deconvolves images by maximizing emptiness UV2MS Append single-source file to multi-source file. UV2TB Converts UV autocorrelation spectra to tables UVADC Fourier transforms and corrects a model and adds to uv data. UVAVG Average or merge a sorted (BT, TB) uv database UVBAS averages several channels and subtracts from uv data. UVCMP Convert a UV database to or from compressed format UVCON Generate sample UV coverage given a user defined array layout UVCOP Task to copy a subset of a UV data file UVCRS Finds the crossing points of UV-ellipses. UVDEC Decrements the number of spectral channels, keeping every nth UVDGP Copy a UV data file, deleting a portion of it UVDI1 Subtract UV data(averaged up to one time) from the other UV data UVDIF prints differences between two UV data sets UVFIL Create, fill a uv database from user supplied information UVFIT Fits source models to uv data. UVFIX Recomputes u,v,w for a uv database UVFLG Flags UV-data UVFND prints selected data from UV data set to search for problems UVFRE Makes one data set have the spectral structure of another UVGIT Fits source models to uv data. UVGLU Glues UV data frequency blocks back together UVHGM Plots statistics of uv data files as histogram. UVHIM Makes image of the histogram on two user-chosen axes UVHOL prints holography data from a UV data base with calibration UVIMG Grid UV data into an "image" UVLIN Fits and removes continuum visibility spectrum, also can flag UVLOD Read export or FITS data from a tape or disk UVLSD least squares fit to channels and divides the uv data. UVLSF least squares fit to channels and subtracts from uv data. UVMAP makes images from calibrated UV data. UVMLN edits data based on the rms of the spectrum UVMOD Modify UV database by adding a model incl spectral index UVMTH Averages one data set and applied it to another. UVNOU flags uv samples near the U,V axes to reduce interference UVPLT plots data from a UV data base UVPOL modifies UV data to make complex image and beam UVPRM measures parameters from a UV data base UVPRT prints data from a UV data base with calibration UVRFI Mitigate RFI by Fourier transform or fitting the circle UVSEN Determine RMS sidelobe level and brightness sensitivity UVSIM Generate sample UV coverage given a user defined array layout UVSRT Sort a UV dataset into a specified order UVSUB Subtracts/divides a model from/into a uv data base UVWAX flags uv samples near the U,V axes to reduce interference VBCAL Scale visibility amplitudes by antenna based constants VBGLU Glues together data from multiple passes thru the VLBA corr. VBMRG Merge VLBI data, eliminate duplicate correlations VLABP VLA antenna beam polarization correction for snapshot images VLAMP Makes ANTAB file for phased VLA used in VLBI observations VLANT applies VLA/EVLA antenna position corrections from OPs files VLBABPSS computes spectral bandpass correction table VLBIN Task to read VLBI data from an NRAO/MPI MkII correlator VLOG Pre-process external VLBA calibration files VPFLG Resets flagging to all or all corss-hand whenever some are flagged VPLOT plots uv data and model from CC file VTESS Deconvolves sets of images by the Maximum Entropy Method VTEST Measures velocity discrepancy across fields WARP Model warps in Galaxies WETHR Plots selected contents of WX tables, flags data based on WX WFCLN Wide field and/or widefrequency CLEANing/imaging task. WIPER plots and edits data from a UV data base using the TV WTMOD modifies weights in a UV data set WTSUM Task to do a a sum of images weighted by other images XBASL Fits and subtracts nth-order baselines from cube (x axis) XG2PL Plots spectrum of a pixel with XGAUS and ZEMAN fits XGAUS Fits 1-dimensional Gaussians to images: restartable XMOM Fits one-dimensional moments to each row of an image XPLOT Plots image rows one at a time on the graphics or TV screen XSMTH Smooth data along the x axis XSUM Sum or average images on the x axis XTRAN Create an image with transformed coordinates ZEMAN Fits 1-dimensional Zeeman model to data