13.35 TASK

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:    \zxhlp{TASK} = ’name’ ;   \zxhlp{GO}  
       will cause the task whose name is assigned to the  
       string adverb \zxhlp{TASK} to be started.  Note: the name  
       should have no leading blanks and should be no longer  
       than 5 characters.  
Alternative grammar:    \zxhlp{GO}  name ;  
       where name is the name of the task to be run.  
Related adverbs:  
   \zxhlp{TASK}       Task name  
   \zxhlp{DOWAIT}     On "\zxhlp{GO}", wait for task completion before returning  
                 to AIPS control  
   \zxhlp{VERSION}    Version of task to be executed.  
   \zxhlp{QCREATE}    Create files by fast or more reliable methods  
Related verbs:  
   \zxhlp{GO}         Initiate a shed task  
   \zxhlp{HELP}       List information about a task  
   \zxhlp{INP}        List adverb values for a task  
   \zxhlp{INPUTS}     Same as \zxhlp{INP} but also written to MSG file  
   \zxhlp{SPY}        Inquire which tasks are active  
   \zxhlp{WAITTASK}   Suspend AIPS operation until a specific task  
                 is complete  
   \zxhlp{ABORTASK}   Kill a task immediately  
   \zxhlp{TGET}       Get adverb values from last execution of \zxhlp{TASK}  
   \zxhlp{TPUT}       Save adverb values without execution of \zxhlp{TASK}  
   \zxhlp{TGINDEX}    List all \zxhlp{TGET}/\zxhlp{SAVE} files  
****************************************************************

ACCOR    Corrects cross amplitudes using auto correlation measurements
ACFIT    Determine antenna gains from autocorrelations
ACIMG    Makes image of autocorrelation data showing time vs frequency
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.
AGAUS    Fits 1-dimensional Gaussians to absorption-line spectra
AHIST    Task to convert image intensities by adaptive histogram
AIPS    AIPS main program for interactive use
AIPSB    AIPS main program for executing batch jobs
AIPSC    AIPS main program for testing and queuing batch jobs
ALVAR    Plots the Allan Variance statistic of a UV data set
ALVPR    prints statistics on the Allan Variance of a UV data set
AMKAT    renumbers MeerKAT antennas so taht antenna number = station ID
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
AVGWT    Computes the average visibility weight of the included data
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
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
BLPCL    Do divide by I,Q,U models for circular polarization BLCHN
BLPLT    Plots BLCAL tables in 2 dimensions as function of baseline and IF
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.
BPASS    computes spectral bandpass correction table
BPCOR    Correct BP table.
BPEDT    Interactive TV task to edit uv data based on BP tables
BPEPL    Plots bandpass tables overlaying multiple times like BPEDT
BPERR    Print and plot BPASS closure outputs
BPFLG    Flgas uv data based on bad BP values
BPLOT    Plots bandpass tables in 2 dimensions as function of time
BPPLT    Plots selected contents of bandpass (BP) files versus 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 calibrator source model-image FITS file
CALWR    writes calibrator source model images w CC files to FITS disk files
CANDY    user-definable (paraform) task to create an AIPS image
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 with CC or MF plotted
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
CHEBI    Make text file to plot Chebyshev polynomials
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   
CLNUP    removes old MS, RL, SG, TG and ?? files from AIPS disks
CLOSE    plots closure phase or amplitude spectra averaged over closures
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
CMPLX    Combines complex images by a variety of mathematical methods.
CNTR    generate a contour plot file or TV plot from an image
COHER    Baseline Phase coherence measurement
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
DENAN    modifies UV data flagging all NaNs
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
DFTIM    Makes image of DFT at arbitrary point showing time vs frequency
DFTPL    plots DFT of a UV data set at arbitrary point versus time
DGAUS    Correct UV model for convolution by Clean beam
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
DT2PD    Write PD table from a PD table text file
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
ELFIT    Plots/fits selected contents of SN, TY, SY, PC or CL files
ELINT    Determines and removes gain dependence on elevation
EVACL    Evaluates statistics in closure phase and amplitude
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 synthesis 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 or detailed count from = 1
FGDIF    Compares affect of 2 FG tables
FGPLT    Plots selected contents of FG table
FGPRT    Pprints counts of selected portions of an FG table
FGSPW    Flags bad spectral windows
FGTAB    writes frequency-range flags to a text file to be read by UVFLG
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
FIXFR    Modifies UV data set making all frequencies increase or decrease
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
FTARS    Fits 1-dimensional polarization spectrum to Q/U text file
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
HLPAGAUS    Interactive Gaussian absorption fitting task AGAUS - run-time help
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
HLPEDIPD    Interactive PD table editor PDEDT - 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
HLPTVIEW    Interactive display of cube in 3 transpositions - 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
HLPZAMAN    Fits 1-dimensional Zeeman model to absorption data - run-time help
HLPZEMAN    Fits 1-dimensional Zeeman model to data - run-time help
HOCLN    Task to do a clean of holography images
HOLGR    Read & process holography visibility data to telescope images
HOLIS    Prints information about holography sampling
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
IANTB    Writes out GC and TY data in ANTAB format
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 or disk files 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
LISUN    prints contents of UV data sets with Sun angles
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
MARSP    Check planetary polarization angles, plot histogram of differences
MASKS    Makes mask image of Clean boxes from boxfile
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
MFIMG    Image the Earth magnetic field model or TEC data used by TECOR
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
MOD3D    Computes a 3D CC model from a set of facets
MODAB    Makes simple absorption/emission spectral-line image in I/V
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 or disk to another
MSORT    Sort a UV dataset into a specified order
MTARS    Compute model inputs to TARS
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 an image or 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
OFUDG    modifies UV data with user’s algorithm no cal adverbs: paraform task
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 HOLOG 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
PCABL    Copies the Cable cal values from PC table 1 to PC table n
PCAL    Determines instrumental polarization for UV data
PCASS    Finds amplitude bandpass shape from pulse-cal table data
PCAVG    Averages pulse-cal (PC) tables over time
PCCOR    Corrects phases using PCAL tones data from PC table
PCDIV    Scales pulse-cal amplitudes by Tsys or Psum
PCEDT    Interactive TV task to edit pulse-cal (PC) tables
PCFIT    Finds delays and phases using a pulse-cal (PC) table
PCFLG    interactive flagging of Pulse-cal data in channel-TB using the TV
PCHIS    Generates a histogram plot file from text input, e.g. from PCRMS
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
PCRMS    Finds statistics of a pulse-cal table; flags bad times and channels
PCVEL    shifts spectral-line UV data to a given velocity: planet version
PDEDT    Interactive TV task to edit polarization D-term (PD) tables
PDPLT    Plots selected contents of PD tables
PEEK    fits pointing model function to output from the VLA
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    Task to load one or two images and play with them on the TV
PLCUB    Task to plot intensity vs x panels on grid of y,z pixels
PLOTC    Plots color schems used by 3-color plot tasks
PLOTR    Basic task to generate a plot file from text input
PLRFI    Plots spectral statistics from output of VBRFI & VLBRF
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.
PPAPP    Applies Right minus Left phase difference to a 2nd data set
PROFL    Generates plot file for a profile display.
PRRFI    Prints excess spectral statistics from output of VBRFI & VLBRF
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
PRTSD    prints contents of AIPS single-dish data sets
PRTSY    Task to print statistics from the SY table
PRTTP    prints contents of tapes and disk files, all supported formats
PRTUV    prints contents of a visibility (UV) data set
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    Scale visibility amplitudes by IF- or subarray-dependent factor
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
RIRMS    computes rms of real/imag of a selected subset of a uv data set
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
RM    Task to calculate rotation measure and magnetic field
RM2PL    Plots spectrum of a pixel with RMFIT fit
RMFIT    Fits 1-dimensional polarization spectrum to Q/U cube
RMSD    Calculate rms for each pixel using data in a box around the pixel
RMTFC    Convolves rotation measure transfer function with various slab models.
RSPEC    Plots and prints spectrum of rms of a cube
RSTOR    Restores a Clean component 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
SHAHO    Flags Holography data for shadowing
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
SNBLP    Plots selected contents of SN or CL files on a baseline basis
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 by IF
SNP2D    Task to convert SN table single-channel phase to delay
SNPLT    Plots selected contents of SN, SY, TY, PC or CL files versus time
SNREF    Chooses best reference antenna to minimize R-L differences
SNRMS    Print statistics for selected contents of SN, SY, TY, PC or CL files
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
SPFIX    Makes cube from input to and output from SPIXR spectral index
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
SPRMS    Plots spectral statistics of a selected subset of a uv data set
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 images
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
SYFIX    modifies OTF SY DATA to match the source numbers in the data set
SYPRT    Task to print values from the SY table
SYSOL    undoes and re-does nominal sensitivity application for Solar data
SYVSN    Plots selected SY/TY data with SN solution values versus time
TABED    Task to edit tables
TACOP    task to copy tables, other extension files
TADIF    prints differences between two table-format 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 input and output text files of the 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
TEPLT    Plots selected contents of TE (TECOR) parameter tables
TFILE    sorts and edits MkIII correlator UNIX-based A-file.
TGREP    finds all user numbers which have used specified task
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
TLCAL    Converts JVLA telcal files to an SN file
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    Interactive task to load an image to the TV with histogram equalization
TVHUI    make TV image from images of intensity, hue, saturation
TVIEW    Display image cube in all 3 transpositions with rotation & reference
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 images and 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.
UVADD    Combines two matching uv data sets
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 in multiple ways
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
UVRMS    computes statistics of a selected subset of a uv data set
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
VBRFI    Plots spectral statistics of VLBA autocorrelation data for RFI
VH2RL    Converts from linear to circular polarization and vice versa
VHCAL    Do divide by I,Q,U models for linear polarization data
VHDIF    find/apply V minus H linear polarization phase difference
VHMOD    Compute linear polarization point source model, applies to data
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
VLBCD    Reads ascii file containing VLBA calibration info into a CD table
VLBIN    Task to read VLBI data from an NRAO/MPI MkII correlator
VLBRF    Plots spectral statistics of VLBA autocorrelation data for RFI
VLBSY    Reads ascii file containing VLBA total power info into an SY table
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
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
WXLOD    Reads KEYIN-format weather information making WX table
XBASL    Fits and subtracts nth-order baselines from cube (x axis)
XG2PL    Plots spectrum of a pixel with XGAUS/AGAUS and ZEMAN/ZAMAN 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
XYDIF    find/apply X minus Y linear polarization phase difference
XYMOD    Compute linear polarization point source model, applies to data
ZAMAN    Fits 1-dimensional Zeeman model to absorption-line data
ZEMAN    Fits 1-dimensional Zeeman model to data