Adding Greek Characters To Plots

[David Bateman]

Ben Abbott wrote:
>
> David, thanks for letting me handle this change. I've learned a bit 
> ... in particular, I learned how simple it was to make the change ;-)
>
> The change to __go_draw_axes__.m defaults to "tex" if there is not 
> axes property for "interpreter". That way you can see it at work. Once 
> the axes have an interpreter property the if-block in __go_draw_axes__ 
> (do_tics) may be deleted ... or left as it is.
>
> A simple example of its use is below
>
> x = pi * (0:10)/10;
> xtick = [0:0.25:1.01]*pi;
> xticklabel = {'0', '\pi/4', '\pi/2', '3\pi/4', '\pi'};
> figure(1)
> clf
> axes();
> plot (x,sin(x))
> set (gca, "xtick", xtick, "xticklabel", xticklabel)
> xlim ([0, pi])
>
> If a subsequent newplot is made to the axis the ticklabels are reset 
> to their default values (as is done in Matlab). I suggest the 
> interpreter value do the same (which it would unless newplot() is 
> modified).

This is not quite right as the test

+  if (~isfield (obj, 'interpreter'))
+    obj.interpreter = 'tex';
+  endif

in do_tics shouldn't be there and graphics.h.in should have the attached 
change made to it. Note that at the suggestion of John, the default 
behavior of the of the interpreter property of the axes is set to none 
for compatibility. I attached an updated changeset credited to you.

The example to get what you want would then be

x = pi * (0:10)/10;
xtick = [0:0.25:1.01]*pi;
xticklabel = {'0', '\pi/4', '\pi/2', '3\pi/4', '\pi'};
figure(1)
clf
axes();
plot (x,sin(x))
set (gca, "xtick", xtick, "xticklabel", xticklabel, "interpreter", "tex")
xlim ([0, pi])

Regards
David



-- 
David Bateman                                David.Bateman at motorola.com
Motorola Labs - Paris                        +33 1 69 35 48 04 (Ph) 
Parc Les Algorithmes, Commune de St Aubin    +33 6 72 01 06 33 (Mob) 
91193 Gif-Sur-Yvette FRANCE                  +33 1 69 35 77 01 (Fax) 

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