AIPS HELP file for XPLOT in 31DEC25
As of Fri Apr 18 23:48:22 2025
XPLOT: Plots image rows on the TV, TEK screen or plot file
INPUTS
INNAME Input image name (name)
INCLASS Input image name (class)
INSEQ 0.0 9999.0 Input image name (seq. #)
INDISK 0.0 9.0 Input image disk unit #
BLC Bottom left corner of input
TRC Top right corner of input
YINC 0.0 128.0 Do every YINCth row
ZINC 0.0 128.0 Do every ZINCth plane
FLUX 0.0 Flux cutoff (see HELP)
PIXRANGE Min,Max of image intensity
Max <= Min => entire range
LTYPE -410.0 410.0 Type of labeling: 1 border,
2 no ticks, 3 standard, 4 rel
to center, 5 rel to subim cen
6 map pixels
PIXVAL 0.0 Display if peak < PIXVAL
DOTV -2.0 2.0 -2 => use TEK screen
<= 0 => make plot file
> 0 => use TV
2 => use TV old method
GRCHAN 0.0 7.0 Use this TV graphics channel
0 -> 1
XYRATIO 0.0 Stretch the X axis wrt Y axis
HELP SECTION
XPLOT
Task: Plots image rows one at a time on the graphics (TEK) or TV
window or device. This may be useful to review spectral-line
data cubes, particularly before using XGAUS on them. There
are 4 modes, quick plots on the TV (DOTV=2), slightly slower
plots of the TV (DOTV=1), plot files (DOTV=0 or -1), and
quick plots on the Tektronix emulator window (DOTV=-2).
After each plot in DOTV -2 and 2 modes, the task prompts you
for permission to continue. Enter Q or q to quit or just hit
RETURN to procede. In DOTV=1 mode, hit TV buttons B or C to
procede of D to quit.
If the X axis is FQID, XPLOT will plot the values as FQID
rather than at the correct frequencies. Transpose your image
to put the input X axis as the 3rd axis and use ISPEC to get
plotting at correct frequencies.
Adverbs:
INNAME.....Input image name (name). Standard defaults.
INCLASS....Input image name (class). Standard defaults.
INSEQ......Input image name (seq. #). 0 => highest.
INDISK.....Disk drive # of input image. 0 => any.
BLC........Bottom right corner in input image of desired
subimage. Default is entire image.
TRC........Top right corner in input image of desired
subimage. Default is entire image.
YINC.......Do only every YINC'th row (beginning at BLC(2)).
ZINC.......Do only every ZINC'th plane (beginning at BLC(3)).
FLUX.......A flux cutoff in the same units as the input image
(i.e. Jy/beam). If a row does not have three
consecutive points above this level, no plot is
done. 0 means 0 in this case,
PIXRANGE...Min,Max of Image intensity. 0,0 => min,max of EACH
row (separately).
LTYPE......Labelling type, see HELP LTYPE for details:
1 = border, 2 = no ticks, 3 or 7 = standard, 4 or 8 =
relative to ref. pixel, 5 or 9 = relative to subimage
(BLC, TRC) center, 6 or 10 = pixels. 7-10 all labels
other than tick numbers and axis type are omitted.
Less than 0 is the same except that the plot file
version number and create time are omitted.
Add n * 100 to alter the metric scaling.
PIXVAL.....Plot row only if the peak value < PIXVAL. Limits
the total number of plots. 0 -> 100000.
DOTV.......<= -2 => Use the TEK (Tektronix emulator) terminal
-2 < DOTV <= 0 -> make plot file(s)
> 0 => Use the TV screen
GRCHAN.....If using the TV, the graphics channel to use. 0 -> 1.
XYRATIO....The ratio of the axes X to Y in the plot. 1.0 makes a
square plot. 0 -> 1.4 (about the usual ratio of X to Y
on the TV screen or A format paper).
EXPLAIN SECTION