OCTAVE VPLOT

 Start octave session
 vplot
 inter file name
 GUI: Axes Limits  <xmin | xmax | ymin | ymax> (x=vertical time, y=depth/elevation)
 save plot to postscript

Figure 26: VFITW ->VPLOT: Plot of vertical time vs. elevation, and interval velocities. Axes and placement of velocity labels by mouse.
\includegraphics[scale=0.54]{Figurevfitw.pdf}