matplotlib-users Mailing List for matplotlib

> Dear Vicent,
> 
> I'm struggling with embedding a navigation toolbar in a QT4 application
>  with matplotlib canvas. Could you please send me an example code of how I
>  add the navigation toolbar in the first place?
> 
> As you notice, I'm a real newbe!
> 
> Thank you very much,
> 
> Thom
> 
> Vicent Mas-2 wrote:
> > Hi Matthias ,
> >
> > thanks a lot for your explanations. They were very useful.
> >
> > Vicent
> 

Hi,

you can start here (it is what I did :-):

http://eli.thegreenplace.net/2009/05/23/more-pyqt-plotting-demos/

Hope it helps.

Vicent
::

	Share what you know, learn what you don't

Hi,

I was checking out matplotlib, and tried running the example shown on
the front page (http://matplotlib.sourceforge.net/), but no window
showed itself.  I had to look through the examples files to find out
how to make it work: it needed a show() command at the end.  I think
that the example should be complete enough for the prospective user to
actually get a pretty picture... not just leave one hanging with <a
list of 100 Patch objects>

Thanks,
-Thomas

I don't see such problem in my installations.
I may be wrong but It seems to me that it is a font issue (I believe
you're not using usetex mode).

Can you try to use other fonts?

For example, my current installation picks up the following font (Vera Serif?).

In [10]: matplotlib.font_manager.findfont(None)
Out[10]: '/astro/research/jul27/local/lib/python2.5/site-packages/matplotlib/mpl-data/fonts/ttf/VeraSe.ttf'

Regards,

-JJ



2009/10/30 Johan Grönqvist <joh...@gm...>:
> Hello List,
>
> I am so far happy with the output form matplotlib, but I recently started
> annotating my plots, and when saving to png-format, the annotations do not
> look very nice. When saving to eps format, I do not see the same problems.
>
> Saving to eps and converting to png seems to be a good workaround for me.
>
> The problem is that the letters in the same word (on the same line) are not
> aligned, some are drawn to far up or down.
>
> png and eps figures are attached. Example script and version number (0.99.0)
> below.
>
> Am I misusing matplotlib? Is this a bug?
>
>
> Regards
>
> johan
>
>
>
>
>
>
>
>
> Minimal example:
> -----------------------
> import matplotlib.pyplot as plt
> import numpy as np
>
> plt.figure()
>
> x = [0]
> plt.plot(x, x)
>
> plt.annotate("units are important, $7.64358$,
> $\\frac{\mathrm{k}\mathrm{m}}{\mathrm{s^2}}$",
>             xy = (0,0),
>             xycoords = "data",
>             xytext = (0.2, 0.6),
>             textcoords = "figure fraction",
>             arrowprops = dict(arrowstyle = "->",
>                               connectionstyle = "arc"))
>
>
> plt.savefig("pyplot_text.png")
> plt.savefig("pyplot_text.eps")
> plt.show()
> -----------------------
>
>
> Expected result: An empty plot with a nice annotation on screen, in a
> png-file, and in an eps-file
>
> Result: Empty plots with annotation displaying differently in the three
> cases. In the png file, the letters u and r  and the digit 7 appear slightly
> above the correct position, and the m in the unit km appears slightly below
> the correct position. In the screen output, the m is correct, but the u and
> r show the same problem as in the png file. In the eps file, all seems to be
> well.
>
> My os is debian (testing), and I obtain matplotlib and all related software
> from the debian repositories.
>
> johan@johan-laptop:~$ uname -a
> Linux johan-laptop 2.6.30-2-amd64 #1 SMP Fri Sep 25 22:16:56 UTC 2009 x86_64
> GNU/Linux
> johan@johan-laptop:~$ python -c "import matplotlib; print
> matplotlib.__version__"
> 0.99.0
>
>
>
>
>
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>
>

Dear Vicent,

I'm struggling with embedding a navigation toolbar in a QT4 application with
matplotlib canvas. Could you please send me an example code of how I add the
navigation toolbar in the first place?

As you notice, I'm a real newbe!

Thank you very much,

Thom



Vicent Mas-2 wrote:
> 
> Hi Matthias ,
> 
> thanks a lot for your explanations. They were very useful.
> 
> Vicent
> 
> -- 
> Share what you know, learn what you don't.
> 
> ------------------------------------------------------------------------------
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> 
> 

-- 
View this message in context: http://old.nabble.com/pan-zoom-axes-problem-tp25274703p26127910.html
Sent from the matplotlib - users mailing list archive at Nabble.com.

Hello List,

I am so far happy with the output form matplotlib, but I recently 
started annotating my plots, and when saving to png-format, the 
annotations do not look very nice. When saving to eps format, I do not 
see the same problems.

Saving to eps and converting to png seems to be a good workaround for me.

The problem is that the letters in the same word (on the same line) are 
not aligned, some are drawn to far up or down.

png and eps figures are attached. Example script and version number 
(0.99.0) below.

Am I misusing matplotlib? Is this a bug?


Regards

johan








Minimal example:
-----------------------
import matplotlib.pyplot as plt
import numpy as np

plt.figure()

x = [0]
plt.plot(x, x)

plt.annotate("units are important, $7.64358$, 
$\\frac{\mathrm{k}\mathrm{m}}{\mathrm{s^2}}$",
              xy = (0,0),
              xycoords = "data",
              xytext = (0.2, 0.6),
              textcoords = "figure fraction",
              arrowprops = dict(arrowstyle = "->",
                                connectionstyle = "arc"))


plt.savefig("pyplot_text.png")
plt.savefig("pyplot_text.eps")
plt.show()
-----------------------


Expected result: An empty plot with a nice annotation on screen, in a 
png-file, and in an eps-file

Result: Empty plots with annotation displaying differently in the three 
cases. In the png file, the letters u and r  and the digit 7 appear 
slightly above the correct position, and the m in the unit km appears 
slightly below the correct position. In the screen output, the m is 
correct, but the u and r show the same problem as in the png file. In 
the eps file, all seems to be well.

My os is debian (testing), and I obtain matplotlib and all related 
software from the debian repositories.

johan@johan-laptop:~$ uname -a
Linux johan-laptop 2.6.30-2-amd64 #1 SMP Fri Sep 25 22:16:56 UTC 2009 
x86_64 GNU/Linux
johan@johan-laptop:~$ python -c "import matplotlib; print 
matplotlib.__version__"
0.99.0