Remove many of the pladv(0) commands that have been sprinkled around this example like confetti.  plenv calls pladv(0) so the result of these extraneous pladv(0) commands was empty pages.  To understand the page handling now in this example, note that pladv(0) (or plenv) is called before each page just like in the other examples.  I have checked this new page handling system works fine for -dev xwin (with and without selecting a subset of the Lena image to plot using the mouse) and -dev psc without any of the empty pages that occurred before.  I have also checked this change works fine for the example options -nosombrero, -nointeractive, -dbg, and -save filename.
Remove many of the pladv(0) commands that have been sprinkled around this
example like confetti.  plenv calls pladv(0) so the result of these
extraneous pladv(0) commands was empty pages.  To understand the page
handling now in this example, note that pladv(0) (or plenv) is called before
each page just like in the other examples.  I have checked this new page
handling system works fine for -dev xwin (with and without selecting a
subset of the Lena image to plot using the mouse) and -dev psc without any
of the empty pages that occurred before.  I have also checked this change
works fine for the example options -nosombrero, -nointeractive, -dbg, and
-save filename.

ToDo.  Propagate this change to the rest of the examples.


svn path=/trunk/; revision=8838

FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot