Thread Subject: Very Difficult MatLab Problem

Hi,

I have a complicated legend in which I want to incorporate a quantity
with a hat over it. I read the previous responses to this question for
this ng and also on the web,
but could not get them to work for me.

My legend has the form

legend('Spectrum',['\gamma \approx' num2str(gval)],['\alpha \approx'
num2str(aval)])

So I want to have 3 entries in my legend: one is just a string and the
other 2 have strings and also numerical values computed in my program
(which are converted to strings). I want to put a hat over the gamma
in the second string.

What I've tried are the following variations, based on previous posts
asking this question:

Variation 1:
legend('Spectrum',['\gamma \approx'
num2str(gval),'interpreter','latex'],['\alpha \approx' num2str(aval)])
Variation 2:
legend('Spectrum',['\gamma \approx' num2str(gval)],['\alpha \approx'
num2str(aval)],'interpreter','latex')
Variation 3:
dd=legend('Spectrum',['\gamma \approx' num2str(gval)],['\alpha
\approx' num2str(aval)])
set(dd,'interpreter','latex')

Each variation was tried with and without putting $ $ around the
string \gamma \approx.

Thanks for any help that you can provide,

Matt B

MatthewB <mathimagical@netscape.net> wrote in message
<e32561d9-819f-422f-b0f3-
d946a52fb21b@e39g2000hsf.googlegroups.com>...
> Hi,
>
> I have a complicated legend in which I want to
incorporate a quantity
> with a hat over it. I read the previous responses to this
question for
> this ng and also on the web,
> but could not get them to work for me.
>
> My legend has the form
>
> legend('Spectrum',['\gamma \approx' num2str(gval)],
['\alpha \approx'
> num2str(aval)])
>
> So I want to have 3 entries in my legend: one is just a
string and the
> other 2 have strings and also numerical values computed
in my program
> (which are converted to strings). I want to put a hat
over the gamma
> in the second string.
>
> What I've tried are the following variations, based on
previous posts
> asking this question:
>
> Variation 1:
> legend('Spectrum',['\gamma \approx'
> num2str(gval),'interpreter','latex'],['\alpha \approx'
num2str(aval)])
> Variation 2:
> legend('Spectrum',['\gamma \approx' num2str(gval)],
['\alpha \approx'
> num2str(aval)],'interpreter','latex')
> Variation 3:
> dd=legend('Spectrum',['\gamma \approx' num2str(gval)],
['\alpha
> \approx' num2str(aval)])
> set(dd,'interpreter','latex')
>
> Each variation was tried with and without putting $ $
around the
> string \gamma \approx.
>
> Thanks for any help that you can provide,
>
> Matt B


Try this:

plot(rand(3)) ;
MyValue = 2*pi ;
legend({sprintf('$\\hat{\\gamma} \\approx %.2f$',
MyValue),'BB', 'ABCDEF'}, 'interpreter', 'latex')

Carefully note
1) the positioning of the curly braces, so that the first
argument specifies the three legend captions.
2) the use of sprintf to generate a string,
3) the use of double backslashes (\\) to circumvent escape
sequences for sprintf

hth
Jos