matplotlib-users Mailing List for matplotlib

Those of you who are PSF mentors for the summer of code, could I ask
you to take a look at Edin's resubmitted proposal for enhancing
mathtext


http://code.google.com/soc/psf/app.html?csaid=edin.salkovic%40gmail.com%3A048a69f9%3A96f5f65b

Google will be funding 25 PSF projects, and this one will need a
higher score to make the cut.  I think the work he is proposing will
be a nice enhancement to the mathtext facility which is used by both
matplotlib and chaco, and since one of Edin's goals is to refactor
mathtext into a standalone project, it should see some usage beyond
those two projects.

Thanks!
JDH

Hello,

I am trying to generate a short movie using matplotlib.
The core of my code looks like

    for i in range(1,len(t)):
        U0,U1x,U1y,H1 =3D list(sig[i,:])

        for x in arange(0,1.001,0.05):
            for y in arange(0,1.001,0.05):
                xx,yy=3Dtrace(U0,U1x,U1y,H1,x,y)
                ts[(x,y)].set_data(xx,yy)

        for j in range(0,nobs):
            tr[j].center =3D (obs[i,2*j],obs[i,2*j+1])

        savefig("f%04d.png"%i)

where the entries of the dictionary 'ts' are lines and the entries of
the dictionary 'tr' a patches (circles).  Moving the lines around with
set_data works quite fine, but moving the patches by setting 'center'
does not.

My question: how do I move a patch?

Many thanks,
Jochen
--=20
http://seehuhn.de/

After waiting for some days for some suggestion, I would like to ask if
there is some suggestion or "starting-point" for solving this issue.
Sincerely yours,
clovis

John Hunter wrote:

>>>>>>"clovis" == clovis  <cl...@pe...> writes:
>>>>>>            
>>>>>>
>
>    clovis> All, I followed up the 'memory leak' discussion in the
>    clovis> sourceforge list and I know the Matplotlib-FAQ entry about
>    clovis> this subject. I've also seen John Hunter's post about the
>    clovis> need of matching figure/close pairs.  Anyway, I still feel
>    clovis> that there are problems in this subject, which can be
>    clovis> exposed by the following script (for Windows, but can
>    clovis> easily be adapted to Unix).
>
>    clovis> As can be seen by the results (also given below), there is
>    clovis> a steady increase in memory usage which is not recovered!
>
>If I recall correctly, there is a known leak in tkagg when you create
>multiple canvases, and this is in Tk and not matplotlib proper.  Todd
>may have something to add here.  
>
>JDH
>
>
>-------------------------------------------------------
>Using Tomcat but need to do more? Need to support web services, security?
>Get stuff done quickly with pre-integrated technology to make your job easier
>Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
>http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>_______________________________________________
>Matplotlib-users mailing list
>Mat...@li...
>https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
>
>  
>

Work around: break up the data into pieces and plot() the pieces rather
than the entire data set.

Gene Carter wrote:
> Greetings,
> 
> I believe I've hit the bug noted in the 2004-07-28 matplotlib-users post
> with a subject "plot dense and large array, AGG limit?".
> 
> I'm wondering if there has been a work around identified. I looked for a
> follow up in the matplotlib lists as well as the vector-agg-general list.
> 
> I've tried to use cairo, but I'm having problems getting my mathtext to
> work, even after setting my numerix to numpy.
> 
> Any help would be appreciated as I'd like to use matplotlib to make
> figures for a manuscript I'm writing.
> 
> Gene Carter
> 
> 

>>>>> "Eric" == Eric Emsellem <ems...@ob...> writes:

    Eric> Hi, I have now a problem when using setp, please try this
    Eric> (maybe it is wrong, but it worked before...).  Thanks for
    Eric> any help here Eric

This was a bug I introduced into svn last night and fixed this
morning.  make sure you are using revision 2410 or later.

JDH

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
  <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type">
  <title></title>
</head>
<body bgcolor="#ffffff" text="#000000">
ok: it didn't work for me because I was trying brute force (showing my
bad knowledge of python), so changing it using p.set_edgecolor ...<br>
Indeed it should work with setp... <br>
<br>
Except that now I have a systematic error trying to use setp. (same as
the one indicated in "BUG ..." I just sent)<br>
<br>
thanks<br>
Eric<br>
<br>
John Hunter wrote:
<blockquote cite="mid...@pe..."
 type="cite">
  <blockquote type="cite">
    <blockquote type="cite">
      <blockquote type="cite">
        <blockquote type="cite">
          <blockquote type="cite">
            <pre wrap="">"Eric" == Eric Emsellem <a class="moz-txt-link-rfc2396E" href="mailto:ems...@ob...">&lt;ems...@ob...&gt;</a> writes:
            </pre>
          </blockquote>
        </blockquote>
      </blockquote>
    </blockquote>
  </blockquote>
  <pre wrap=""><!---->
    Eric&gt; Hi, how would you easily set the EDGEcolor of the bars
    Eric&gt; (using "bar")?  I see a "set/get_edgecolor" in the output of
    Eric&gt; the bar command (p1 = bar ...) but I cannot manage to change
    Eric&gt; the edgecolors of my bars...

Works for me...

from pylab import subplot, show, setp, nx
ax = subplot(111)
p = ax.bar(range(10), range(10))
setp(p, edgecolor='red', facecolor='green', linewidth=4)
show()

  </pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">-- 
====================================================================
Eric Emsellem                             <a class="moz-txt-link-abbreviated" href="mailto:ems...@ob...">ems...@ob...</a>
                           Centre de Recherche Astrophysique de Lyon
9 av. Charles-Andre                        tel: +33 (0)4 78 86 83 84
69561 Saint-Genis Laval Cedex              fax: +33 (0)4 78 86 83 86
France                    <a class="moz-txt-link-freetext" href="http://www-obs.univ-lyon1.fr/eric.emsellem">http://www-obs.univ-lyon1.fr/eric.emsellem</a>
====================================================================
</pre>
</body>
</html>

Hi,

I have now a problem when using setp, please try this (maybe it is 
wrong, but it worked before...).
Thanks for any help here
Eric

---------------------------------------------------------------------------
scatter([0,1],[0,1])          
xticklabels = get(gca(), 'xticklabels')
setp(xticklabels, fontsize='large')
---------------------------------------------------------------------------
exceptions.TypeError                                 Traceback (most 
recent call last)

/home/science/Sauron/AnalysisKin/Paper7/<ipython console>

/usr/lib/python2.4/site-packages/matplotlib/pylab.py in setp(*args, 
**kwargs)
   1444
   1445 def setp(*args, **kwargs):
-> 1446     ret = _setp(*args, **kwargs)
   1447     draw_if_interactive()
   1448     return ret

/usr/lib/python2.4/site-packages/matplotlib/artist.py in setp(h, *args, 
**kwargs)
    488
    489     ret = []
--> 490     for o in h:
    491         for s, val in funcvals:
    492             s = s.lower()

/usr/lib/python2.4/site-packages/matplotlib/cbook.py in flatten(seq, 
scalarp)
     96         if scalarp(item): yield item
     97         else:
---> 98             for subitem in flatten(item, scalarp):
     99                yield subitem
    100

/usr/lib/python2.4/site-packages/matplotlib/cbook.py in flatten(seq, 
scalarp)
     93     and Recipe 1.12 in cookbook
     94     """
---> 95     for item in seq:
     96         if scalarp(item): yield item
     97         else:

TypeError: iteration over non-sequence

>>>>> "Eric" == Eric Emsellem <ems...@ob...> writes:

    Eric> Hi, how would you easily set the EDGEcolor of the bars
    Eric> (using "bar")?  I see a "set/get_edgecolor" in the output of
    Eric> the bar command (p1 = bar ...) but I cannot manage to change
    Eric> the edgecolors of my bars...

Works for me...

from pylab import subplot, show, setp, nx
ax = subplot(111)
p = ax.bar(range(10), range(10))
setp(p, edgecolor='red', facecolor='green', linewidth=4)
show()

HI,
sorry I just found the way to change the edgecolor of my "bars" by just 
changing the global option:

rc('patch', edgecolor='r')

before I use

p1 = bar(......)

cheers
Eric

Eric Emsellem wrote:
> Hi,
>
> how would you easily set the EDGEcolor of the bars (using "bar")?
> I see a "set/get_edgecolor" in the output of the bar command (p1 = bar 
> ...) but I cannot manage to change the edgecolors of my bars...
>
> thanks
>
> Eric
>

-- 
====================================================================
Eric Emsellem                             ems...@ob...
                           Centre de Recherche Astrophysique de Lyon
9 av. Charles-Andre                        tel: +33 (0)4 78 86 83 84
69561 Saint-Genis Laval Cedex              fax: +33 (0)4 78 86 83 86
France                    http://www-obs.univ-lyon1.fr/eric.emsellem
====================================================================

Hi,

how would you easily set the EDGEcolor of the bars (using "bar")?
I see a "set/get_edgecolor" in the output of the bar command (p1 = bar 
...) but I cannot manage to change the edgecolors of my bars...

thanks

Eric