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See these examples. bbox works in a same way for the text and the annotation.

http://matplotlib.sourceforge.net/examples/pylab_examples/fancytextbox_demo.html

http://matplotlib.sourceforge.net/examples/pylab_examples/annotation_demo2.html

And, the annotation guide my help.

http://matplotlib.sourceforge.net/users/annotations_guide.html

But they do not support a circle (or ellipse), although implementing
it should be straight forward.

Regards,

-JJ




On Fri, Apr 9, 2010 at 9:12 PM, Nico Schlömer <nic...@gm...> wrote:
> Hi all,
>
> is there any way to encircle a text annotation?
> Looking at
>
>    http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.annotate
>
> suggests tinkering with bbox I guess, but I haven't had any success with it.
> Hints?
>
> Cheers,
> Nico
>
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Hi,

by putting

rc('text', usetex=True)
rc('text.latex',preamble='\usepackage[bitstream-charter]{mathdesign}')       

in my plot source I was trying to get a consistent fontface, but it doesn't
work.
I know since preamble is not officially supported in matplotlib I didn't
really expect it to work so easily. 

But because Bitstream Charter is officially supported and selectable for
normal text, I was wondering why the font package is not loaded with
mathdesign? Is it possible to load the mathdesign package somewhere
manually?
Thanks.
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For future reference, the solution proposed by Gökhan and Diakronik is to
replace the Latex tick-labels with strings:

>import matplotlib.pyplt as plt
>tick_locs = range(start, stop, increment)
>plt.xticks(tick_locs, [r"$\mathbf{%s}$" % x for x in tick_locs]) 

If you have twin x or y axes (my case), the solution I found was: 

(Note: this solution is essentially the same as the one above, with the
distinction that every entry is set manually, which allows for more
flexibility, but requires more work)


>from mpl_toolkits.axes_grid.parasite_axes import SubplotHost
>from matplotlib.pylab import *   # For plotting graphs.
>from matplotlib.pyplot import *

>fig=figure(1)
>host= SubplotHost(fig,111)
>fig.add_subplot(host)
>par=host.twiny()

>host.axis["bottom"]
>par.axis["top"]

>hostv=[1e-14,1e-4,-1.5,1.5]
>host.axis(hostv)
>parv=[1e-8,1e2,-1.5,0.5]
>par.axis(parv)

>host.set_xticks([1e-14, ... ,1e-4])
>x_labels = [r'\boldmath $10^{-14} $', ... ,r'\boldmath $ $']
>host.set_xticklabels(x_labels)

>par.set_xticks([1e-8, ... ,1e2])
>parx_labels = [ r'\boldmath $10^{-8}$', ... ,r'\boldmath $ $' ]
>par.set_xticklabels(parx_labels)

>host.set_yticks([-1,0])
>y_labels = [r'\boldmath $-1$', r'\boldmath $0$']
>host.set_yticklabels(y_labels)


Result: 

http://old.nabble.com/file/p28199345/Picture%2B7.png 

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Hi all,

is there any way to encircle a text annotation?
Looking at

    http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.annotate

suggests tinkering with bbox I guess, but I haven't had any success with it.
Hints?

Cheers,
Nico