AIPS NRAO AIPS HELP file for OUTSEQ in 31DEC22



As of Wed Dec 8 8:37:58 2021



HELP SECTION

OUTSEQ
Type: Adverb  (Real)
Use:  Data files are stored in AIPS under logical names which
      have 3 parts: a 12-character "name" field, a 6-character
      "class" field, and a numeric "sequence number" field.
      OUTSEQ is used to specify the "sequence number" field for
      the output data file from a verb or task.  It is used as
      an integer number between -1 and 9999.
Null values:  0 and -1
      -1 means to use the same sequence number as that found
      for the first input image (actual INSEQ with null value
      filled in).  0 means find the image having the highest
      sequence number which is consistent with the other output
      name adverb parameters and use a sequence number 1 higher.
      If there is no such image, then use OUTSEQ of 1.  The
      phrase "0 => highest unique", used a lot in Help files, is
      intended to be a code for this standard default behavior.

Verbs:
   CLRONAME......Clears adverbs specifying the first output image.
   GETONAME......Fills 1st output image name parameters by catalog slot
                 number.
   IMOHEAD.......Displays the output image header contents.
   OBITIMAG......Access to OBIT task Imager without self-cal or peeling.
   OBITMAP.......Simplified access to OBIT task Imager.
   OBITPEEL......Access to OBIT task Imager with self-cal and peeling.
   OBITSCAL......Access to OBIT task Imager with self-cal, NOT peeling.
   QOHEADER......Verb to summarize the output image header: center
                 positions.
   RENAME........Rename a file (UV or Image).
Procedures:
   CXIMAGR.......Grid UV data into a complex image, Fourier transform,
                 Clean.
   CXPOLN........Procedure to make complex polarization images and beam.
   DOFARS........Procedure to aid in Faraday rotation synthesis using the
                 FARS task.
   FXALIAS.......Least squares fit aliasing function and remove.
   LINIMAGE......Build image cube from multi-IF data set.
   MAPPR.........Simplified access to IMAGR.
   PEELR.........Calibrates interfering sources in multi-facet imges.
   STUFFR........Averages together data sets in hour angle.
   VLBAIT........Procedure to read and process VLBA data.
Tasks:
   ACFIT.........Determine antenna gains from autocorrelations.
   ACIMG.........Makes image of autocorrelation data showing time vs
                 frequency
   AFARS.........Is used after FARS to determine Position and Value of the
                 maximum.
   AGAUS.........Fits 1-dimensional Gaussians to absorption-line spectra.
   AHIST.........Task to convert image intensities by adaptive histogram.
   APCLN.........Deconvolves images with CLEAN algorithm.
   APGS..........Deconvolves image with Gerchberg-Saxton algorithm.
   APVC..........Deconvolves images with van Cittert algorithm.
   ATLOD.........Reads ATCA data in RPFITS dormat into AIPS.
   AVER..........Averages over time UV data sets in 'BT' order.
   AVSPC.........Averages uv-data in the frequency domain.
   BAKLD.........Reads all files of a catalog entry from BAKTP tape.
   BASRM.........Task to remove a spectral baseline from total power
                 spectra.
   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.
   BLAVG.........Average cross-polarized UV data over baselines.
   BLCHN.........Compute closure offset corrections on a
                 channel-by-channel basis.
   BLOAT.........Converts line data to greater number channels.
   BLWUP.........Blow up an image by any positive integer factor.
   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.
   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.
   BSROT.........Modifies SD beam-switch continuum data for error in
                 throw.
   CALIB.........Determines antenna calibration: complex gain.
   CANDY.........User-definable (paraform) task to create an AIPS image.
   CC2IM.........Make model image from a CC file.
   CCRES.........Removes or restores a CC file to a map with a gaussian
                 beam.
   CENTR.........Modifies UV data to center the reference channel.
   CHKFC.........Makes images of Clean boxes from Boxfile.
   CLINV.........Copy CL/SN file inverting the calibration.
   COMB..........Combines two images by a variety of mathematical methods.
   CONVL.........Convolves an image with a gaussian or another image.
   CORER.........Calculates correlator statistics and flags bad ones.
   CPYRT.........Replaces history with readme file, inserts copyright.
   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.
   DENAN.........Modifies UV data flagging all NaNs.
   DESCM.........Copies a portion of a UV data set.
   DFQID.........Modifies UV data changing the indicated FQIDs.
   DFTIM.........Makes image of DFT at arbitrary point showing time vs
                 frequency.
   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.
   DQUAL.........Rearranges source list, dropping qualifiers.
   DSKEW.........Geometric interpolation correction for skew.
   DSORC.........Copies a data set elliminating some source numbers.
   DSTOK.........Drops the cross-hand polarizations.
   DTSIM.........Generate fake UV data.
   EVAUV.........Subtracts & divides a model into UV data, does statistics
                 on results.
   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.
   FILLM.........Reads VLA on-line/archive format uv data tapes (post Jan
                 88).
   FILLR.........Reads old VLA on-line-system tapes into AIPS.
   FITLD.........Reads FITS files to load images or UV (IDI or UVFITS)
                 data to disk.
   FIXAL.........Least squares fit aliasing function and remove.
   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.
   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.
   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.
   GAL...........Determine parameters from a velocity field.
   GLENS.........Models galaxy gravitational lens acting on 3 component
                 source.
   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).
   HGEOM.........Interpolates image to different gridding and/or geometry.
   HISEQ.........Task to translate image by histogram equalization.
   HUINT.........Make RGB image from images of intensity & hue, like
                 TVHUEINT.
   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.
   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.
   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.
   JMFIT.........Fits Gaussians to portions of an image.
   LAYER.........Task to create an RGB image from multiple images.
   LGEOM.........Regrids images with rotation, shift using interpolation.
   LTESS.........Makes mosaic images by linear combination.
   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.
   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.
   MCUBE.........Collects n-dimensional images into n+1-dimensional image.
   MEDI..........Combines four images by a variety of mathematical
                 methods.
   MK3IN.........Translate Haystack MKIII VLBI format "A" tapes into AIPS.
   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.
   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.
   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.
   NINER.........Applies various 3x3 area operaters to an image.
   NNLSQ.........Non-Negative-Least-Squares decomposition of spectrum.
   NOIFS.........Makes all IFs into single spectrum.
   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.
   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.
   PCVEL.........Shifts spectral-line UV data to a given velocity: planet
                 version.
   PGEOM.........Task to transform an image into polar coordinates.
   PHASE.........Baseline Phase coherence measurement.
   PHNEG.........Negates a UV datafile's visibility phase.
   PHSRF.........Perform phase-referencing within a spectral line
                 database.
   POLCO.........Task to correct polarization maps for Ricean bias.
   REAMP.........Scale visibility amplitudes by IF- or subarray-dependent
                 factor.
   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.
   RGBMP.........Task to create an RGB image from the 3rd dim of an image.
   RLCOR.........Corrects a data set for R-L phase differences.
   RM............Task to calculate rotation measure and magnetic field.
   RMFIT.........Fits 1-dimensional polarization spectrum to Q/U cube.
   RMTFC.........Convolves rotation measure transfer function with various
                 slab models.
   RMSD..........Calculate rms for each pixel using data in a box around
                 the pixel.
   RSPEC.........Plots and prints spectrum of rms of a cube.
   RSTOR.........Restores a Clean component file to a map with a Gaussian
                 beam.
   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.
   SHADW.........Generates the "shadowed" representation of an image.
   SKYVE.........Regrids a DSS image from one co-ordinate frame to
                 another.
   SMOTH.........Task to smooth a subimage from upto a 7-dim. image.
   SNCOP.........Task to copy SN table averaging some input IFs.
   SNDUP.........Copies and duplicates SN table from single pol file to
                 dual pol.
   SNP2D.........Task to convert SN table single-channel phase to delay.
   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.
   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.
   STEER.........Task which deconvolves the David Steer way.
   STESS.........Task which finds sensitivity in mosaicing.
   STFUN.........Task to calculate a structure function image.
   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.
   SYSOL.........Undoes and re-does nominal sensitivity application for
                 Solar data.
   TABED.........Task to edit tables.
   TACOP.........Task to copy tables, other extension files.
   TAFFY.........User definable task to operate on an image.
   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.
   TBAVG.........Time averages data combining all baselines.
   TBIN..........Reads a text file AIPS table into AIPS.
   TI2HA.........Modifies times in UV data to hour angles.
   TRANS.........Task to transpose a subimage of an up to 7-dim. image.
   TVHLD.........Interactive task to load an image to the TV with
                 histogram equalization.
   TVHUI.........Make TV image from images of intensity, hue, saturation.
   TVSAD.........Finds and fits Gaussians to portions of an image with
                 interaction.
   TYAPL.........Undoes and re-does nominal sensitivity application.
   UBAVG.........Baseline dependent time averaging of uv data.
   UJOIN.........Modifies UV data converting IFs to spectral channels.
   UTESS.........Deconvolves images by maximizing emptiness.
   UV2MS.........Append single-source file to multi-source file.
   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.
   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.
   UVFIL.........Create, fill a uv database from user supplied
                 information.
   UVFIX.........Recomputes u,v,w for a uv database.
   UVFRE.........Makes one data set have the spectral structure of
                 another.
   UVGLU.........Glues UV data frequency blocks back together.
   UVHIM.........Makes image of the histogram on two user-chosen axes.
   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.
   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.
   UVPOL.........Modifies UV data to make complex image and beam.
   UVRFI.........Mitigate RFI by Fourier transform or fitting the circle.
   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.
   VLBIN.........Task to read VLBI data from an NRAO/MPI MkII correlator.
   VPFLG.........Resets flagging to all or all corss-hand whenever some
                 are flagged.
   VTESS.........Deconvolves sets of images by the Maximum Entropy Method.
   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: restartable.
   XMOM..........Fits one-dimensional moments to each row of an image.
   XSMTH.........Smooth data along the x axis.
   XSUM..........Sum or average images on the x axis.
   XTRAN.........Create an image with transformed coordinates.
   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.

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