AIPS HELP file for XYRATIO in 31DEC26

As of Sat Dec 6 2:55:52 2025

HELP SECTION

XYRATIO
Type: Adverb  (Real)
Use:  The ratio in coordinate units per pixel separation along the X
     axis with respect to the Y axis.
Null value:  0
      Null value assignment is usually calculated from the pixel
      separations (X to Y increment) given in the image header if the
      axes are related (i.e. LL-MM).  If the axes are unrelated
      (i.e. V-LL), the ratio of the Y to X windows is used (to give
      square plot).  Some tasks set 0 to 1.4 in such cases.  With DOTV
      true, the latter case is set to fill one of the two TV
      dimensions.
Tasks:
   ALVAR.........Plots the Allan Variance statistic of a UV data set.
   ANBPL.........Plots and prints uv data converted to antenna based
                 values.
   BLPLT.........Plots BLCAL tables in 2 dimensions as function of
                 baseline and IF.
   BLSUM.........Sums images over irregular sub-images, displays
                 spectra.
   BPEPL.........Plots bandpass tables overlaying multiple times like
                 BPEDT.
   BPLOT.........Plots bandpass tables in 2 dimensions as function of
                 time.
   BPPLT.........Plots selected contents of bandpass (BP) files versus
                 time.
   BSTST.........Graphical display of solutions to frequency-switched
                 data.
   CAPLT.........Plots closure amplitude and model from CC file.
   CCNTR.........Generate a contour plot file from an image with CC or
                 MF plotted.
   CLOSE.........Plots closure phase or amplitude spectra averaged over
                 closures.
   CLPLT.........Plots closure phase and model from CC file.
   CNTR..........Generate a contour plot file or TV plot from an image.
   FGPLT.........Plots selected contents of FG table.
   GREYS.........Plots images as contours over multi-level grey.
   IMEAN.........Displays the mean & extrema and plots histogram of an
                 image.
   ISPEC.........Plots and prints spectrum of region of a cube.
   KNTR..........Make a contour/grey plot file from an image w multiple
                 panels.
   PCHIS.........Generates a histogram plot file from text input, e.g.
                 from PCRMS.
   PCNTR.........Generate plot file with contours plus polarization
                 vectors.
   PCPLT.........Plots pulse-cal tables in 2 dimensions as function of
                 time.
   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).
   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.
   POSSM.........Task to plot total and cross-power spectra.
   PROFL.........Generates plot file for a profile display.
   PRPLT.........Plots profiles of average image values on up to 3 axes.
   PRTAN.........Prints the contents of the ANtenna extension file.
   RFLAG.........Flags data set based on time and freq rms in fringe
                 visibilities.
   RM2PL.........Plots spectrum of a pixel with RMFIT fit.
   RSPEC.........Plots and prints spectrum of rms of a cube.
   SNBLP.........Plots selected contents of SN or CL files on a baseline
                 basis.
   SNPLT.........Plots selected contents of SN, SY, TY, PC or CL files
                 versus time.
   SYVSN.........Plots selected SY/TY data with SN solution values
                 versus time.
   TARPL.........Plot input and output text files of the TARS task.
   TEPLT.........Plots selected contents of TE (TECOR) parameter tables.
   UVHGM.........Plots statistics of uv data files as histogram.
   UVHOL.........Prints holography data from a UV data base with
                 calibration.
   UVPLT.........Plots data from a UV data base in multiple ways.
   VPLOT.........Plots uv data and model from CC file.
   XG2PL.........Plots spectrum of a pixel with XGAUS/AGAUS and
                 ZEMAN/ZAMAN fits.
   XPLOT.........Plots image rows one at a time on graphics, TV, or plot
                 file.

EXPLAIN SECTION