[Octave-bug-tracker] [bug #42582] some TeX symbols don't work on-screen (fltk)

[H. G.]

URL:
  <http://savannah.gnu.org/bugs/?42582>

                 Summary: some TeX symbols don't work on-screen (fltk)
                 Project: GNU Octave
            Submitted by: hardy
            Submitted on: Mi 18 Jun 2014 18:54:08 GMT
                Category: Plotting
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.8.1
        Operating System: GNU/Linux

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Details:

Here is some sample script to show what I mean:


close all;
graphics_toolkit('fltk');
%graphics_toolkit('gnuplot');
plot(1:10);
r = 'works: \alpha \approx \leftrightarrow ';
s = ', works not: \varphi \Leftrightarrow \Uparrow \Downarrow \notin \prod
\diamond ';
t = '\bigrightriangledown';
title([r,s,t]);


If I run this on Octave 3.8.1 as well as on Octave 3.8.2-rc1 under Ubuntu
Linux, then the TeX symbols in s and t are NOT shown on screen. This is using
FLTK.

If I switch to Gnuplot, then most of those symbols appear on screen, just the
one in t still does not appear.

I assumed that all of those symbols should work because of this reference:
www.network-theory.co.uk/docs/octave3/octave_172.html

I don't know if this happens as well on Windows installations, but I would
assume yes.




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