Content-type: text/html Manpage of uvtriple

uvtriple

Section: User Commands (1)
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NAME

uvtriple - Make phase or amplitude plots of the triple product from a  

PERSON RESPONSIBLE

nebk  

CATEGORIES

uv analysis, plotting  

DESCRIPTION

UVTRIPLE - Plot triple product phase or amplitude from visibility data
     bases. Options are available to time average data and to plot
     different triples on separate sub-plots on each page.
 

PARAMETERS

vis
The input visibility file(s). Multiple input files and wild card card expansion are supported. No default
line
Line type of the data in the format
  type,nchan,start,width,step
Here "type" can be one of: channel, wide or velocity If you select more than one channel, they will all appear on the plot. If you want to average channels together, then use WIDTH appropriately. Default is channel,1,1,1,1
select
This selects which visibilities to be used. Default is all visibilities. See the Users Guide for information about how to specify uv data selection. Default is all data
stokes
Select Stokes parameter(s) or polarization(s) from:
  xx, yy, xy, yx,  i, q, u, v, 
  rr, ll, rl, lr
Default is all polarizations or Stokes parameters present
axis
Two values, one for each axis. Minimum match is active. Values for the x-axis chosen from:
  time                     [DD HH MM SS.S format]
  dtime                    [decimal days  format]
Values for the y-axis chosen from:
  phase                    [degrees]
  amplitude                [natural units] 
xrange
Plot range for the x-axis
  If axis = time                  [dd,hh,mm,ss.s; 8 values]
  If axis = dtime                 [decimal days;  2 values]
Default is to self-scale (see also OPTIONS=XIND).
yrange
Plot range for the y-axis
  If axis = phase                 [degrees;       2 values]
  If axis = amplitude             [natural units; 2 values]
Default is to self-scale (see also OPTIONS=YIND).
average
The averaging time in minutes. Averaging is reset at frequency, source, or pointing centre changes. Individual triples and polarizations are averaged separately (unless OPTIONS=AVALL). If you have selected multiple channels and you also ask for time averaging, then all the selected channels are averaged together in the time interval. Default is no averaging.
inc
Plot every INCth point (on each sub-plot) that would normally have been selected. Useful if you don't want to average, but want to cut down on the number of plotted points. Beware of increments that divide exactly into the number of triples in time ordered data. Default is 1.
options
Task enrichment options. Minimum match is effective.
 nocal   Don't apply the gain corrections
 nopol   Don't apply the polarization leakage corrections
 nopass  Don't apply the bandpass corrections

 notrip  Plot all triples on the same plot, otherwise each
         triple is plotted on a separate sub-plot.

 avall   If you are averaging in time, then average all triples
         selected on each sub-plot together.  E.g. all selected
         polarizations, and, if OPTIONS=NOTRIP, all triples
         as well.
 unwrap  When plotting phase, try to unwrap it so that
         say, if one point is 179 deg and the next -179,
         they will be plotted as 179 and 181 deg.  NOTE:
         Unwrapping noise can be VERY misleading.

 all     Use flagged and unflagged visibilties
 flagged Use only flagged visibilities
         The default is to use only unflagged (good) visibilities
         ALL overrides  FLAGGED

 xind    If the x-axis is self-scaled, then unless OPTIONS=NOTRIP,
         setting XIND will cause each sub-plot to have the x-axis 
         self-scaled independently.  The default is that the x-range
         used is that which encompasses the ranges from all sub-plots.
 yind    The equivalent for the y-axis

 symbols Each file is plotted with a different plot symbol
 colours Each file is plotted with a different colour. Only works
         if plotting one polarization.
 dots    If time averaging is invoked, plot the data with dots
         rather than filled in circles.  These plot much faster
         on hardcopy devices.

 log     Write the numbers that are plotted into the log file.
         No attempt to separate baselines is made, except that
         automatically obtained by not setting OPTIONS=NOTRIP
device
PGPLOT plot device/type. No default.
nxy
Number of plots in the x and y directions for when plotting each baseline separately. Defaults try to choose something sensible.
size
PGPLOT character sizes, in units of the default size (i.e., 1) First value is for the labels, the second is for the symbol size Defaults are 1.7,1.7 and the second value defaults to the first.
log
The output logfile name. The default is the terminal.


 

Index

NAME
PERSON RESPONSIBLE
CATEGORIES
DESCRIPTION
PARAMETERS

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Time: 18:35:39 GMT, July 05, 2011