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 **************************************************************** ACCOR Corrects cross amplitudes using auto correlation measurements ACFIT Determine antenna gains from autocorrelations ADDIF Adds an IF axis to a uv data set 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 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 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 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 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. 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 BSAVG Task to do an FFT-weighted sum of beam-switched images 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 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 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 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 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 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 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/SN/CL tables EDITR Interactive baseline-oriented visibility editor using the TV ELINT Determines and removes gain dependence on elevation 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 FETCH Reads an image from an external text file. FFT takes Fourier Transform of an image or images FGPLT Plots selected contents of FG table 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 tape to load FITS images or FITS UV files to disk FITTP writes images / uv data w extensions to tape in FITS format FIXAL least squares fit aliasing function and remove FIXBX converts a BOXFILE to another for input to IMAGR 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 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 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 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. 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 - internal help HLPEDICL Interactive SN/CL table uv-data editor - internal help HLPEDISN Interactive SN/CL table (not UV) editor - internal help HLPEDITS Interactive TY table (not UV) editor - internal help HLPEDITY Interactive TY table uv-data editor - internal help HLPEDIUV Interactive uv-data editor - internal help HLPIBLED Interactive Baseline based visibility Editor - internal help HLPPLAYR OOP TV class demonstration task - internal (on-line) help HLPSCIMG Cleaning tasks - internal help HLPSCMAP Cleaning tasks - internal help HLPSPFLG Interactive time-channel visibility Editor - internal help HLPTVFLG Interactive time-baseline visibility Editor - internal help HLPTVHUI Interactive intensity-hue-saturation display - on-line help HLPTVRGB Interactive red-green-blue display - on-line help HLPWIPER WIPER run-time help file HOLGR Read & process holography visibility data to telescope images HORUS makes images from unsorted UV data, applying any calibration IBLED Interactive BaseLine based visibility EDitor 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 MAPIT Procedure to MAP and Self-Calibrate a UVDATA set MAPIT_MX MX adverbs not changed by MAPIT MAPIT_NA Procedure to MAP and Self-Calibrate a UVDATA set MAPIT_UV Procedure to MAP and Self-Calibrate a UVDATA set 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 two 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 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) 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 and deconvolves using UV data directly. 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 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 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 PCLOD Reads ascii file containing pulse-cal info to PC table. PCNTR Generate plot file with contours plus polarization vectors 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. 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 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 REAMP modifies UV data re-scaling the amplitudes REGRD Regrids an image from one co-ordinate frame to another REMAG Task to replace magic blanks with a user specified value RESEQ Renumber antennas RFI Look for RFI in uv data RGBMP Task to create an RGB image from the 3rd dim of an image RLDIF determines Right minus Left phase difference RM Task to calculate rotation measure and magnetic field RMSD Calculate rms for each pixel using data at the box around the pixel RSTOR Restores a CC file to a map with a gaussian beam. RTIME Task to test compute times 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 SMOTH Task to smooth a subimage from upto a 7-dim. image 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 table editor using the TV SNFLG Writes flagging info based on phases in SN files SNPLT Plots selected contents of SN, TY, PC or CL files SNSMO smooths and filters a calibration SN table SOLCL adjust gains for solar data according to nominal sensitivity SPCAL Determines instrumental polzn. for spec. line UV data 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 SQASH Task to collapse several planes in a cube into one plane 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 SUMIM Task to sum overlapping, sequentially-numbered images SUMSQ Task to sum the squared pixel values of overlapping, SWPOL Swap polarizations in a UV data base 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 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 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 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 a map with histogram equalization TVHUI make TV image from images of intensity, hue, saturation TVHXF Task to calculate transfer function based on histogram TVPL Display a plot file on the TV TVRGB make TV image from images of true color (RGB) images TXPL Displays a plot (PL) file on a terminal or line printer TYAPL undoes and re-does nominal sensitivity application TYSMO smooths and filters a calibration TY table UBAVG Baseline dependent time averaging of uv data 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 UVGLU Glues UV data frequency blocks back together UVHGM Plots statistics of uv data files. UVHIM Images statistics of uv data files. 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 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 VLANT applies VLA antenna position corrections from OPs files VLBIN Task to read VLBI data from an NRAO/MPI MkII correlator VLOG Pre-process external VLBA calibration files VPFLG Resets flagging to all correlators whenever 1 is 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) XGAUS Fits 1-dimensional Gaussians to images 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 |