matplotlib-users Mailing List for matplotlib (Page 7)

RGVhciBNYWlsaW5nbGlzdCwKCkkgd2FudCB0byBjcmVhdGUgYSBob3Jpem9udGFsIGhpc3Rvcmdy
YW0uIFRoZSB5LWxhYmVscyBoYXZlIG1vcmUgdGV4dCwgdGhhbgpmaXRzIGluIHRoZSBfbm9ybWFs
XyBsYXlvdXQuIEhvdyBjb3VsZCBJIGluY3JlYXNlIHRoZSB3aWR0aCBvZiB0aGUgeXRpY2tzCmxl
Z2VuZD8KCkJlc3QgcmVnYXJkczoKICAgR2Vyb2xmCgotLSAKRGlwbC4gUGh5cy4gR2Vyb2xmIFpp
ZWdlbmhhaW4gKGdlcm9sZkB6aWVnZW5oYWluLmNvbSkKUHJpdmF0ZTogS2xvcHN0b2Nrc3RyYXNz
ZSAyMSAtIDY1MTg3IFdpZXNiYWRlbiAtIEdlcm1hbnkKT2ZmaWNlOiBSb29tIDQ2LTMzMiAtIEVy
d2luLVNjaHLDtmRpbmdlci1TdHIuNDYgLSBUVSBLYWlzZXJzbGF1dGVybiAtIEdlcm1hbnkKV2Vi
OiBnZXJvbGYuemllZ2VuaGFpbi5jb20K

hi there,

i'm writing a linear step by step scripts and i'd like to use
matplotlibs interactive features as a step to load up some data, the
user to identify a point, the plot window closed and the point to be
returned to my script for further processing.

i assumed that waiting for pylab.show() to return would halt my script
until the figure was dismissed however this only works on the first
run of my script i.e.

In [1]: run z:/archive/scripts/TCD_import_probe_data
8.13378191174e-007 0.00635162601626

In [2]: run z:/archive/scripts/TCD_import_probe_data
None None

In the second invocation the figure was displayed but the script
carried on running before the figure was dismissed.

Running %reset between invocations has no effect.

Here is the crux of the script,

class SetOrigin(object):
  """
  callback functor for origin placement
  """
  def __init__(self, x=None, y=None):
    self.x = x
    self.y = y
    if x and y:
      self.set = True
    else:
      self.set = False
  def __call__(self, event):
    if event.inaxes:
      self.x = event.xdata
      self.y = event.ydata
      self.set = True

pylab.plot(time, voltage)
pylab.title('Click cursor on origin ...')
cursor = Cursor(pylab.gca(), useblit=True, color='#ff0000', linewidth=1)

origin = SetOrigin()
pylab.connect('button_press_event', origin)

foo = pylab.show()

print origin.x, origin.y

pylab.show()

What am i doing wrong?

This happens in plain iPython shell and pysh (scipy shell has
difficulty loading the script 'Original traceback cannot be
reconstructed...')

brendan

I wanna my contour to display at the certain pixels and only set
figure size can't do this job.
Is there any way to get the scale value while mpl doing contour, and
more, to change it?
Great thanks for your replies.

>Can you set "verbose.level" to "debug-annoying" in your matplotlibrc and=
=20
>send us the output?  That may help provide an explanation as to why the=20
>text is not appearing.  Also, for good measure, can you provide your=20
>matplotlibrc file, and information about the platform and versions of=20
>Python that you are using? =20

See the attachments.  Their platform is RedHat Linux and python 2.4.3

>Do you get different results when you run at=20
>the commandline vs. from an http request?  It could be that incorrect=20
>permissions (as user "apache", for instance) are causing the problems.
>
>Cheers,
>Mike

I'd like to run it from the command line, but I haven't done it before
(and not sure how to do it); the web hosting server is in a land far
far away. :-)   I am just running the script from a http request.  I
can probably have them run it if need to.

Thanks,

>
>Tim Lewis wrote:
>> I'm using the code from=20
>> =
http://www.scipy.org/Cookbook/Matplotlib/Using_MatPlotLib_in_a_CGI_script=
=20
>> to generate plots from my web server.  The plot shows up fine (w/o =
text)=20
>> but when I use xlabel("x-axis"), ylabel("y-axis"), or title("A =
Chart");=20
>> no text shows up on the plot.  Everything seems fine with the install=20
>> and I don't get any errors when I run the script.  It seems that that=20
>> matplotlib is unable to find the font's and just simply ignores them =
--=20
>> I really dunno.
>>=20
>> Any suggestions?
>>=20
>>=20
>> =
------------------------------------------------------------------------
>>=20
>> =
-------------------------------------------------------------------------
>> SF.Net email is sponsored by:=20
>> Check out the new SourceForge.net Marketplace.
>> It's the best place to buy or sell services for
>> just about anything Open Source.
>> http://sourceforge.net/services/buy/index.php
>>=20
>>=20
>> =
------------------------------------------------------------------------
>>=20
>> _______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

I am part of a team trying to create interactive GUI scientific
visualisations and would like some advice regarding the best way to proceed. 

We are trying to output mathematical functions (Fourier transforms, ray
tracing etc.) in graphical form and have been very impressed with the ease
Matplotlib can do this. However, all attempts to control or modify input to
Matplotlib from a GUI (Tkinter, Wx, Jython, PyGTK etc.) have proved
fruitless due to seeming incompatibility between these modules, particularly
when one distributes any finished product to another platform.

I am an experienced Java programmer who needs the portability and free
technologies provided by Java (or Python) to distribute our applications and
would like to know of the best way to mesh Matplotlib to a GUI creating
system. We have experimented with the GUI creation possibilities of
Matplotlib itself but these are inadequate for our needs.

Does anyone know of (or has examples of) Matplotlib applications controlled
by a GUI or must I return to my Java roots where I can easily solve all GUI
problems but do not have access to a powerful maths library such as
Matplotlib.

Thanks
adam 
-- 
View this message in context: http://www.nabble.com/Scientific-visualisation-techniques-tf4963066.html#a14215824
Sent from the matplotlib - users mailing list archive at Nabble.com.

This list is for matplotlib, please try asking at the scipy mailing list.

On Thursday 06 December 2007 10:20:30 am Samuel GARCIA wrote:
> Hi all,
>
> I found something strange in scipy.stats.percentileofscore
>
> In [1]: from scipy import *
>
> In [2]: a = rand(10000)
>
> In [3]: stats.percentileofscore(a,.2)
> Out[3]: 20.0157565073
>           This OK.
>
>
> In [4]: stats.percentileofscore(a,.0002)
> Out[4]: 102.898311442
>              This is strange !!!!!
>
> In [5]: stats.percentileofscore(a,1.4)
> ---------------------------------------------------------------------------
> <type 'exceptions.IndexError'>            Traceback (most recent call last)
>
> /home/sgarcia/<ipython console> in <module>()
>
> /usr/lib/python2.5/site-packages/scipy/stats/stats.py in
> percentileofscore(a, score, histbins, defaultlimits)
>     942     cumhist = np.cumsum(h*1, axis=0)
>     943     i = int((score - lrl)/float(binsize))
> --> 944     pct =
> (cumhist[i-1]+((score-(lrl+binsize*i))/float(binsize))*h[i])/float(len(a))
> * 100
>     945     return pct
>     946
>
> <type 'exceptions.IndexError'>: index out of bounds
>
>                 This does work...
>
>
> Any idea.
>
> Sam



-- 
Darren S. Dale, Ph.D.
Staff Scientist
Cornell High Energy Synchrotron Source
Cornell University
275 Wilson Lab
Rt. 366 & Pine Tree Road
Ithaca, NY 14853

dar...@co...
office: (607) 255-3819
fax: (607) 255-9001
http://www.chess.cornell.edu

On Dec 7, 2007 9:09 AM, Michael Droettboom <md...@st...> wrote:

> You could try setting your backend to simply "Agg" to rule out some Tk
> usage/installation problem as the culprit.

Thanks, the problem goes away if I use the Agg backend.

Cheers

Adam

Unfortunately, I'm not able to reproduce this bug on RHEL 4.  Valgrind 
(a memory checking tool) doesn't come up with any clues.

You could try setting your backend to simply "Agg" to rule out some Tk 
usage/installation problem as the culprit.

Other than that, I'm stumped, but maybe one of the Leopard users on this 
list has more insight.

Cheers,
Mike

Adam Mercer wrote:
> On Dec 7, 2007 8:21 AM, Michael Droettboom <md...@st...> wrote:
> 
>> Can you also please attach your data -- or point to some acceptable data
>> online?  What platform and backend are you using?
> 
> I've attached an example data file.  I'm using the TKAgg backend on
> Mac OS X Leopard.
> 
> Cheers
> 
> Adam

-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

On Dec 7, 2007 8:21 AM, Michael Droettboom <md...@st...> wrote:

> Can you also please attach your data -- or point to some acceptable data
> online?  What platform and backend are you using?

I've attached an example data file.  I'm using the TKAgg backend on
Mac OS X Leopard.

Cheers

Adam

Can you set "verbose.level" to "debug-annoying" in your matplotlibrc and 
send us the output?  That may help provide an explanation as to why the 
text is not appearing.  Also, for good measure, can you provide your 
matplotlibrc file, and information about the platform and versions of 
Python that you are using?  Do you get different results when you run at 
the commandline vs. from an http request?  It could be that incorrect 
permissions (as user "apache", for instance) are causing the problems.

Cheers,
Mike

Tim Lewis wrote:
> I'm using the code from 
> http://www.scipy.org/Cookbook/Matplotlib/Using_MatPlotLib_in_a_CGI_script 
> to generate plots from my web server.  The plot shows up fine (w/o text) 
> but when I use xlabel("x-axis"), ylabel("y-axis"), or title("A Chart"); 
> no text shows up on the plot.  Everything seems fine with the install 
> and I don't get any errors when I run the script.  It seems that that 
> matplotlib is unable to find the font's and just simply ignores them -- 
> I really dunno.
> 
> Any suggestions?
> 
> 
> ------------------------------------------------------------------------
> 
> -------------------------------------------------------------------------
> SF.Net email is sponsored by: 
> Check out the new SourceForge.net Marketplace.
> It's the best place to buy or sell services for
> just about anything Open Source.
> http://sourceforge.net/services/buy/index.php
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

Can you also please attach your data -- or point to some acceptable data 
online?  What platform and backend are you using?

Cheers,
Mike

Adam Mercer wrote:
> Hi
> 
> Since updating to 0.91.1 one of my scripts, attached, has stopped
> working. I get the following error when trying to run it
> 
> $ ./plot.py data.dat plot.png
> alloc: invalid block: 0x1c15fa4: 40 1 0
> 
> Abort trap
> $
> 
> Any ideas what could be causing this?
> 
> Cheers
> 
> Adam
> 
> 
> ------------------------------------------------------------------------
> 
> -------------------------------------------------------------------------
> SF.Net email is sponsored by: 
> Check out the new SourceForge.net Marketplace.
> It's the best place to buy or sell services for
> just about anything Open Source.
> http://sourceforge.net/services/buy/index.php
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

On Friday 07 December 2007 7:19:04 am Jos=E9 G=F3mez-Dans wrote:
> Hi,
>
> On Thursday 06 December 2007 19:39:59 Venkat Ramanan wrote:
> > I'm looking for something analogous to Matlab's ginput() and roipoly().
>
> I'm no expert on this, but have a look at the lasso_demo.py example, which
> shows something akin to roipoly(), and pick_event_demo.py and
> pick_even_demo2.py, which show something like ginput() (although I think =
no
> cross hairs :D).

Check out cursor_demo.py and matplotlib.widgets.Cursor for cross hairs.

Hi,

On Thursday 06 December 2007 19:39:59 Venkat Ramanan wrote:
> I'm looking for something analogous to Matlab's ginput() and roipoly().

I'm no expert on this, but have a look at the lasso_demo.py example, which 
shows something akin to roipoly(), and pick_event_demo.py and 
pick_even_demo2.py, which show something like ginput() (although I think no 
cross hairs :D).

I hope that's useful to you,
Jose 

Michael Droettboom wrote:
> Thanks, that helps a lot.
> 
> It seems to be working now -- I've committed this in r4643.
> 
> Cheers,
> Mike

Mike, thanks a lot for the rapid action! Bugs squashed.

Cheers,
Vincent.

I'm using the code from
http://www.scipy.org/Cookbook/Matplotlib/Using_MatPlotLib_in_a_CGI_script to
generate plots from my web server.  The plot shows up fine (w/o text) but
when I use xlabel("x-axis"), ylabel("y-axis"), or title("A Chart"); no text
shows up on the plot.  Everything seems fine with the install and I don't
get any errors when I run the script.  It seems that that matplotlib is
unable to find the font's and just simply ignores them -- I really dunno.

Any suggestions?

Hi,

I have written a simple image viewing tool with window/level controls 
linked to the right mouse, which generally works okay.

But when I use the pan/zoom button, clicking and dragging the right 
mouse button changes the zoom as intended, but also affects the 
window/level too which is undesirable.

How to change the callback so that the pan/zoom mode doesn't affect 
window/level?

The code is attached.

If there are better image viewing tools using matplotlib, I can upgrade, 
but I couldn't find them on a quick search. The goal is to add some 
plotting capability ( plot row, col on user-specified coordinates) and 
some ROI drawing capability. ( See my other post for those questions. )

Matplotlib: 0.87.7, python: 2.5 ubuntu 7.04

Thanks,
Venkat.

Hi

Since updating to 0.91.1 one of my scripts, attached, has stopped
working. I get the following error when trying to run it

$ ./plot.py data.dat plot.png
alloc: invalid block: 0x1c15fa4: 40 1 0

Abort trap
$

Any ideas what could be causing this?

Cheers

Adam

Hi,

I'm looking for something analogous to Matlab's ginput() and roipoly().

ginput() basically displays a crosshair on the current figure and allows 
us to select points by clicking on it. It returns the x,y coordinates of 
the points.

roipoly() allows us to define a polygon by clicking on the figure and 
returns a logical matrix, where ones represent the insides of the 
polygon and zeros outside.

Any pointers are appreciated.

I recently found matplotlib and started porting some of my Matlab 
scripts to it.

Ubuntu feisty (7.04), matplotlib 0.87.7. I can upgrade though.

Thanks,
Venkat.

Hi,

I just happened to do the same thing two days ago. If you want  
uncertainties as well, here is some code that uses scipy.optimize. I  
just put up a preliminary example on the scipy wiki:

http://www.scipy.org/Cookbook/FittingData?action=show

Not the cleanest or most sophisticated code in the world, but it  
works for simple things.

Cheers,
Jessica

On Dec 6, 2007, at 8:06 AM, Ryan May wrote:

> Ping Yeh wrote:
>> Hi,
>>
>> I have (x,y) data that I want to fit to the formula
>> y = a * x^b
>> to determine a and b. How can I do it? The current
>> manual only lists linear fit and polynomial fit.
>>
>
> If you just want quick power law fit without turning to the other
> solutions, you can just transform your variables to make it a  
> linear fit
> problem:
>
> log(y) = log(a * x^b) = log(a) + b * log(x)
>
> So just do the linear regression with the logarithms of x and y,  
> and the
> slope you get back will be b, and the intercept will be log(a).
>
> Ryan
>
> -- 
> Ryan May
> Graduate Research Assistant
> School of Meteorology
> University of Oklahoma
>
> ---------------------------------------------------------------------- 
> ---
> SF.Net email is sponsored by: The Future of Linux Business White Paper
> from Novell.  From the desktop to the data center, Linux is going
> mainstream.  Let it simplify your IT future.
> http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>

Mike,

Thanks for fixing those two errors that I introduced in 4374. I'm sorry 
that I evidently did not test that code path, or even inspect it carefully.

Eric

Michael Droettboom wrote:
> 
> Thanks, that helps a lot.
> 
> It seems to be working now -- I've committed this in r4643.
> 
> Cheers,
> Mike
> 
> Vincent Schut wrote:
>> Hmm, that's a bit hard, it's not really what one would call a
>> self-contained example...
>>
>> the bug triggers when I load a rgb numpy float array with imshow (only
>> with floats, not with ints).
>>
>> After some thought and trial, it's simple: these lines already trigger
>> the error:
>>
>> #======================
>> import pylab, numpy
>>
>> rgbFloat = numpy.random.random((100,100,3))
>> pylab.imshow(rgbFloat)
>> pylab.show()
>> #======================
>>
>> Hope that helps!
>>
>> VS.
>>
>>
>>
>> Michael Droettboom wrote:
>>> Can you send your script that triggers this bug? I wasn't the author of 
>>> this code, so I don't know how to get that path to execute -- but I'm 
>>> happy to work through your example until it's working.
>>>
>>> (I suspect the intention here was "m, n = x.shape[:2]", but I can't test 
>>> it.)
>>>
>>> Cheers,
>>> Mike
>>>
>>> Vincent Schut wrote:
>>>> Thanks.
>>>> However, now I get a different error:
>>>>
>>>> Traceback (most recent call last):
>>>>   File
>>>> "/usr/lib64/python2.5/site-packages/matplotlib/backends/backend_gtk.py",
>>>> line 331, in expose_event
>>>>     self._render_figure(self._pixmap, w, h)
>>>>   File
>>>> "/usr/lib64/python2.5/site-packages/matplotlib/backends/backend_gtk.py",
>>>> line 319, in _render_figure
>>>>     self.figure.draw (self._renderer)
>>>>   File "/usr/lib64/python2.5/site-packages/matplotlib/figure.py", line
>>>> 622, in draw
>>>>     for a in self.axes: a.draw(renderer)
>>>>   File "/usr/lib64/python2.5/site-packages/matplotlib/axes.py", line
>>>> 1297, in draw
>>>>     im.draw(renderer)
>>>>   File "/usr/lib64/python2.5/site-packages/matplotlib/image.py", line
>>>> 188, in draw
>>>>     im = self.make_image(renderer.get_image_magnification())
>>>>   File "/usr/lib64/python2.5/site-packages/matplotlib/image.py", line
>>>> 130, in make_image
>>>>     x = self.to_rgba(self._A, self._alpha)
>>>>   File "/usr/lib64/python2.5/site-packages/matplotlib/cm.py", line 61,
>>>> in to_rgba
>>>>     m, n = npy.shape[:2]
>>>> TypeError: 'function' object is unsubscriptable
>>>>
>>>>
>>>> Michael Droettboom wrote:
>>>>> Thanks.  I have corrected this in SVN.
>>>>>
>>>>> Cheers,
>>>>> Mike
>>>>>
>>>>> Vincent Schut wrote:
>>>>>> Hi,
>>>>>>
>>>>>> there is a bug in cm.py (svn): it references npy (first time: line 58),
>>>>>> but npy is never imported.
>>>>>>
>>>>>> Cheers,
>>>>>> VS.
>>>>>>
>>>>>>
>>>>>> -------------------------------------------------------------------------
>>>>>> SF.Net email is sponsored by: The Future of Linux Business White Paper
>>>>>> from Novell.  From the desktop to the data center, Linux is going
>>>>>> mainstream.  Let it simplify your IT future.
>>>>>> http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4
>>>>>> _______________________________________________
>>>>>> Matplotlib-users mailing list
>>>>>> Mat...@li...
>>>>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>>> -------------------------------------------------------------------------
>>>> SF.Net email is sponsored by: The Future of Linux Business White Paper
>>>> from Novell.  From the desktop to the data center, Linux is going
>>>> mainstream.  Let it simplify your IT future.
>>>> http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4
>>>> _______________________________________________
>>>> Matplotlib-users mailing list
>>>> Mat...@li...
>>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
>> -------------------------------------------------------------------------
>> SF.Net email is sponsored by: The Future of Linux Business White Paper
>> from Novell.  From the desktop to the data center, Linux is going
>> mainstream.  Let it simplify your IT future.
>> http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4
>> _______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> 

I have the same problem with ubuntu gutsy. I believe it is a bug in 
libgnomeprint, not in wx.

Ryan Krauss wrote:
> FYI, I see this same warning in another wxPython program of mine that
> doesn't use mpl or wxmpl, so it seems like it is a wxPython issue.
>
> Solutions are still welcome.
>
> Ryan
>
> On Nov 28, 2007 8:46 AM, Ryan Krauss <rya...@gm...> wrote:
>   
>> I just created a small wxmpl example that I really like (attached),
>> but when I run it, I get these error messages:
>>
>> ** (python:18091): WARNING **: Can't create printer "PDF" because the
>> id "PDF" is already used
>>
>> (python:18091): GnomePrintCupsPlugin-WARNING **: The CUPS printer PDF
>> could not be created
>>
>>
>> (python:18091): GnomePrintCupsPlugin-WARNING **: The data for the CUPS
>> printer PDF could not be loaded.
>>
>>
>> I don't know if this is wxmpl specific, caused by wxPython, or caused
>> by matplotlib, but I would like to make it go away.  Any thoughts?
>>
>> Thanks,
>>
>> Ryan
>>
>>     
>
> -------------------------------------------------------------------------
> SF.Net email is sponsored by: The Future of Linux Business White Paper
> from Novell.  From the desktop to the data center, Linux is going
> mainstream.  Let it simplify your IT future.
> http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>   

As as wxmpl user I say that is a great great idea!

Christopher Barker wrote:
> John Hunter wrote:
>   
>> You cannot import pylab and use the FigureCanvasWx at the same time.
>> Please follow the lead of examples/embedding_in_wx*.py if you want to
>> use matplotlib in a wxpython GUI.
>>     
>
> or use wxmpl:
>
> http://agni.phys.iit.edu/~kmcivor/wxmpl/
>
> By the way, couldn't that be distributed with Matplotlib? Maybe in 
> toolkits, if not the main distro.
>
> -Chris
>
>
>   

Michael Droettboom skrev:
> I'm on a Linux box (I'm assuming you're on Windows, since you mentioned 
> Process Explorer), and I wasn't able to find any file handle "leaks", as 
> such, but I did see that font files were being opened many more times 
> than they need to be.
> 
> If you're able to run from Subversion, r4633 has a fix for this.  I'm 
> curious if it fixes your symptoms.
> 
Yes this fixed the problem.

/Jörgen

Ping Yeh wrote:
> Hi,
> 
> I have (x,y) data that I want to fit to the formula
> y = a * x^b
> to determine a and b. How can I do it? The current
> manual only lists linear fit and polynomial fit.
> 

If you just want quick power law fit without turning to the other
solutions, you can just transform your variables to make it a linear fit
problem:

log(y) = log(a * x^b) = log(a) + b * log(x)

So just do the linear regression with the logarithms of x and y, and the
slope you get back will be b, and the intercept will be log(a).

Ryan

-- 
Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma

On Dec 6, 2007 5:40 AM, Andrew Jaffe <a.h...@gm...> wrote:
> Hi All,
>
> I've been compiling svn versions of matplotlib on OSX for quite a while
> with no (or few...) problems.
>
> On upgrading to leopard on my mac pro, I've run into the
> error messages below.
>
> External libs are from fink. There seems to be some problem with
> attempts to build a universal binary.

The error you are getting looks like libjpeg wasn't built as a
universal binary, and you *might* have success by setting the arch
flags, eg

 export ARCHFLAGS="-arch i386"
 export MACOSX_DEPLOYMENT_TARGET=10.5
 export CFLAGS="-arch i386"
 export LDFLAGS="-arch i386"
 export CXXFLAGS="-arch i386"

but I tried in vein earlier to get a build respecting these flags
working (wasn't using fink though).

You might want to simply edit setupext.py to *remove* the /sw fink
paths, and follow the instructions

  http://ipython.scipy.org/moin/MatplotlibOSXBuildNotes

and

  http://ipython.scipy.org/moin/Py4Science/InstallationOSX

Hope this helps,
JDH