; XYRATIO
;---------------------------------------------------------------
;! Ratio of X to Y units per pixel
;# ADVERB COORDINATES
;-----------------------------------------------------------------------
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;-----------------------------------------------------------------------
;---------------------------------------------------------------
XYRATIO   LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
----------------------------------------------------------------
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.
   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.
   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.
   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.
   POSSM.........Task to plot total and cross-power spectra.
   PROFL.........Generates plot file for a profile display.
   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.
   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.
----------------------------------------------------------------
