[Octave-bug-tracker] [bug #48198] With recent 4.1.0+ and gnuplot backend all simbol or dot plots will also include a line.

[Dan Sebald]

Follow-up Comment #7, bug #48198 (project octave):

Sorry about that folks.  I misunderstood what "lt" represents.  Near the end
of June I will look at this issue again with regards to gnuplot 4.4.  Also,
I'm pretty sure that the "stuck lines" problem in which the characteristics of
a line resembles that of a previous plot, e.g.:

demo polar
demo waterfall

is related to this.  This hunk of code:


   if (__gnuplot_has_feature__ ("linetype"))
     scommand = "linetype";
   else
-    scommand = "line style";
+    scommand = "style line";
   endif
   fprintf (plot_stream, "set %s %d default;\n", scommand, idx);
   fprintf (plot_stream, "set %s %d", scommand, idx);


is assigned a line type to indeces, e.g.,


set linetype 3 ...


However, the difference betwen linetype and "style line" is that linetype is
persistent.  Those are not reset with the "reset" command.  The way that
Octave is using gnuplot, where it essential resets and then redefines all
variables with a plot, might work better using just "style line" if possible. 
Maybe that would stay 4.4 compatible that way too.  Again, I look at this in a
couple weeks.

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