plotobs provides a graphical display of the observation
data in a .yobs file.
The upper part of the window shows a table with one row for each of the
input observations, and the lower part shows a plot with the points
represented by the observations each plotted in a different colour.
You can highlight one or more of these observations (overplot them in black)
by clicking the relevant row(s) in the table at the top. Use CTRL-click
to select multiple rows. Other elements of the GUI are explained in
Section 5.
Usage: plotobs [-help] [-debug]
in=<obs-file>
in = <obs-file>
yobs format.