matplotlib-users Mailing List for matplotlib

Self follow-up:
Rolled back to visual 0.3.2.9 and the segfault with pylab is not present 
there; both the visual object and pylab graph are rendered correctly. 
Sorry vpython, looks like the bug is due to your new beta.

-Mark

Mark Heslep wrote:
> Version information:
> ---------------------------
> Vpython visual-4.beta14
> In [2]: visual.__version__
> Out[2]: '1.0.1'
> Python 2.4.4, Fedora Core 6 updated.
> python-matplotlib-0.87.7-3.fc6
>
> Description:
> A segfault is reliably produced when running vpython along with pylab / 
> matplotlib functions:
>
> cut------------------------------------------
> from visual import *
> from pylab import *
>
> ball = sphere( pos=(0,0,0), color=color.red)
> x=arrange(0,10,0.1)
> y=sin(2*pi*x)
> plot(x,y)
> cut ------------------------------------------
>
>
> The segfault actually triggers on the plot call, but removing _either_ 
> the visual sphere call _or_ the pylab plot call eliminates the segfault, 
> with the either the plot or the ball rendering correctly.
> Ive filed a bug w/ vpython.  Any ideas?
>
> Regards,
> Mark
>
>
> -------------------------------------------------------------------------
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>   

Version information:
---------------------------
Vpython visual-4.beta14
In [2]: visual.__version__
Out[2]: '1.0.1'
Python 2.4.4, Fedora Core 6 updated.
python-matplotlib-0.87.7-3.fc6

Description:
A segfault is reliably produced when running vpython along with pylab / 
matplotlib functions:

cut------------------------------------------
from visual import *
from pylab import *

ball = sphere( pos=(0,0,0), color=color.red)
x=arrange(0,10,0.1)
y=sin(2*pi*x)
plot(x,y)
cut ------------------------------------------


The segfault actually triggers on the plot call, but removing _either_ 
the visual sphere call _or_ the pylab plot call eliminates the segfault, 
with the either the plot or the ball rendering correctly.
Ive filed a bug w/ vpython.  Any ideas?

Regards,
Mark

Christopher Barker wrote:
 > Gary Ruben wrote:
 >> I just picked up a problem posted over on the numpy list. I noticed that
 >> from pylab import * is importing the oldnumeric-wrapper versions of
 >> zeros(), ones() and empty(), and presumably other things too, into the
 >> interactive namespace. Shouldn't it be picking up the versions from
 >> numpy's main namespace for interactive use?
 >
 > My understanding is that pylab (and Numerix) is maintaining backward
 > compatibility with itself, so the oldnumeric  form is the right one.
 >
 > Another reason NOT to EVER use "import *"

The way I tripped over this was using "ipython -pylab", which is doing 
this under the hood, so it's a little uglier in this case. What would be 
the effect on pylab using the newer numpy interactive namespace instead? 
I wonder whether matplotlib could check whether it has been imported by 
ipython interactively and import the newer namespace in this case, or 
whether there's a good argument for just dropping this little backward 
compatibility wart?

 > Before too long, hopefully we'll only have to deal with numpy.
 >
 > -Chris

I'll just cross-post Fernando (ipython) Perez's solution from the numpy 
list to aid anyone else who falls into this trap:

--

Until mpl drops support for the compatibility layers, you may want to
set up a simple pylab profile.  In ~/.ipython make a file called
'ipythonrc-pylab' consisting of:

#######
# Load default config
include ipythonrc

# Add single-line python statements here
execute from numpy import *
########

Since pylab does a 'from .num?. import *' this will ensure that the
top-level visible functions are the current numpy ones, not the
compatibility layer ones.  You then start things with:

ipython -pylab -p pylab

and you'll get:

In [1]: zeros?
Type:           builtin_function_or_method
Base Class:     <type 'builtin_function_or_method'>
Namespace:      Interactive
Docstring:
     zeros((d1,...,dn),dtype=float,order='C')

     Return a new array of shape (d1,...,dn) and type typecode with all
     it's entries initialized to zero.



Not ideal, but it's a little hack that will work in practice until we
finish crossing the muddy river of backwards compatibility.

Cheers,

f

--

Gary

Well, the old trusted email jdh...@ac... is being
retired today.  It served me well for 12 years migrating from old Sun
boxes through countless linux boxes but since I'm no longer at
uchicago and the box it is running on is dying, I figured it is
finally time to give it up.  That and the fact that spamemrs have
harvested that address off of the usenet for 10+ years and spam-bayes
is losing the battle to them.  Hopefully google's spam filters will do
better.

So my future postings and annoucements will be coming from jd...@gm...

JDH

Hi,

I'm using matplotlib in a GTK gui canvas with the GTKAgg backend.  I'm 
connecting a mouse click 'button_press_event' to the click function.  If 
I choose print event.x everything works fine.  However I'm after the x 
value in terms of the x-axis not pixels.  When I try print event.xdata I 
get an error message.  Am I making a stupid mistake or is this a bug?

Thanks

Martin

  
    self.canvas.connect('button_press_event',self.click)

def click(self,widget,event):
        print 'you clicked', event.xdata, event.ydata
        #print 'you clicked', event.x, event.y


Traceback (most recent call last):
  File "./dangerplotpy", line 120, in click
    print 'you clicked', event.xdata, event.ydata
AttributeError: xdata

On 1/31/07, Christopher Barker <Chr...@no...> wrote:
>
> Chris Fonnesbeck wrote:
> > I have built a
> > matplotlib installer for OS X,
>
> Sorry I can't help with your problem, but:
>
> Which Python are you building against?

Which num* are you including
> Which wxPython?
> Which other back-ends.
>

ActiveState Python 2.4.3numpy from svn
no wxPython, just TkAgg

Curoiously, this only happens on my intel machine and not on my PPC! I have
tried pulling a completely new svn code, but it still happens.

-- 
Chris Fonnesbeck + Atlanta, GA + http://trichech.us

Chris Fonnesbeck wrote:
> I have built a 
> matplotlib installer for OS X, 

Sorry I can't help with your problem, but:

Which Python are you building against?
Which num* are you including
Which wxPython?
Which other back-ends.

I'd really love to see a workable installer that we can post on pythonmac!

-Chris


-- 
Christopher Barker, Ph.D.
Oceanographer

Emergency Response Division
NOAA/NOS/OR&R            (206) 526-6959   voice
7600 Sand Point Way NE   (206) 526-6329   fax
Seattle, WA  98115       (206) 526-6317   main reception

Chr...@no...

This may not be the appropriate place to post this, but I have built a
matplotlib installer for OS X, using setupegg.py:
python setupegg.py config -L../staticlibs build bdist_mpkg

However, when I import pylab, I get the follwing:
ImportError: No module named matplotlib.pylab

The problem appears to be that __init__.py is not included in the package;
when I do a standard install using setup.py, the file is copied over as it
should be.

-- 
Chris Fonnesbeck + Atlanta, GA + http://trichech.us

Chris,

My guess is that you have some combination of 0.87.7 and svn; the 
traceback says 0.87.7, and the KeyError is because of an addition to 
rcParams since 0.87.7.

Try this:

In [1]:import matplotlib

In [2]:matplotlib.rcParams
Out[2]:
{'axes.axisbelow': False,
  'axes.edgecolor': 'k',
  'axes.facecolor': 'w',
  'axes.formatter.limits': (-7, 7),
  'axes.grid': False,
  'axes.hold': True,

etc. etc.

If you don't see the axes.formatter.limits key then your __init__.py is 
not from svn.  Maybe the thing to do is delete all versions and traces 
of matplotlib from your system and then re-download and install.

Eric

Chris Fonnesbeck wrote:
> On 1/31/07, *John Hunter* <jdh...@ac... 
> <mailto:jdh...@ac...>> wrote:
> 
>      >>>>> "Chris" == Chris Fonnesbeck <ch...@tr...
>     <mailto:ch...@tr...>> writes:
> 
>        Chris> The thing is, I deleted my entire ~/.matplotlib directory,
>        Chris> hoping to start clean. Where does matplotlib get its info
>        Chris> when a .matplotlibrc is not present in my home directory?
> 
>     It first looks in the current working dir and then in ~/.matplotlib
> 
>     Try running a sample script with --verbose-helpful and it will tell
>     you which file is being read...
> 
> 
> 
> I copied the matplotlibrc file from the source in svn; here is what I 
> get using --verbose-helpful:
> 
> Osoyoos:~ chris$ python plot.py --verbose-helpful
> plot.py:14: SyntaxWarning: import * only allowed at module level
>   def main():
> matplotlib data path 
> /Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/mpl-data 
> 
> $HOME=/Users/chris
> CONFIGDIR=/Users/chris/.matplotlib
> loaded rc file /Users/chris/.matplotlib/matplotlibrc
> matplotlib version 0.87.7
> verbose.level helpful
> interactive is False
> platform is darwin
> numerix numpy 1.0.2.dev3522
> font search path 
> ['/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/mpl-data']
> loaded ttfcache file /Users/chris/.matplotlib/ttffont.cache
> backend TkAgg version 8.4
> Traceback (most recent call last):
>   File "plot.py", line 20, in ?
>     main()
>   File "plot.py", line 16, in main
>     plot(range(10), range(10))
>   File 
> "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/pylab.py", 
> line 2038, in plot
>     b = ishold()
>   File 
> "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/pylab.py", 
> line 937, in ishold
>     return gca().ishold()
>   File 
> "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/pylab.py", 
> line 883, in gca
>     ax =  gcf().gca(**kwargs)
>   File 
> "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/figure.py", 
> line 679, in gca
>     return self.add_subplot(111, **kwargs)
>   File 
> "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/figure.py", 
> line 506, in add_subplot
>     a = Subplot(self, *args, **kwargs)
>   File 
> "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axes.py", 
> line 4911, in __init__
>     Axes.__init__(self, fig, [ self.figLeft, self.figBottom,
>   File 
> "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axes.py", 
> line 439, in __init__
>     self._init_axis()
>   File 
> "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axes.py", 
> line 470, in _init_axis
>     self.xaxis = XAxis(self)
>   File 
> "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axis.py", 
> line 514, in __init__
>     self.cla()
>   File 
> "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axis.py", 
> line 535, in cla
>     self.set_major_formatter(ScalarFormatter())
>   File 
> "/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/ticker.py", 
> line 271, in __init__
>     self._powerlimits = rcParams['axes.formatter.limits ']
> KeyError: 'axes.formatter.limits'
> 
> 
> 
> -- 
> Chris Fonnesbeck + Atlanta, GA + http://trichech.us
> 
> 
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> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

On 1/31/07, John Hunter <jdh...@ac...> wrote:
>
> >>>>> "Chris" == Chris Fonnesbeck <ch...@tr...> writes:
>
>    Chris> The thing is, I deleted my entire ~/.matplotlib directory,
>    Chris> hoping to start clean. Where does matplotlib get its info
>    Chris> when a .matplotlibrc is not present in my home directory?
>
> It first looks in the current working dir and then in ~/.matplotlib
>
> Try running a sample script with --verbose-helpful and it will tell
> you which file is being read...
>

>
I copied the matplotlibrc file from the source in svn; here is what I get
using --verbose-helpful:

Osoyoos:~ chris$ python plot.py --verbose-helpful
plot.py:14: SyntaxWarning: import * only allowed at module level
  def main():
matplotlib data path
/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/mpl-data
$HOME=/Users/chris
CONFIGDIR=/Users/chris/.matplotlib
loaded rc file /Users/chris/.matplotlib/matplotlibrc
matplotlib version 0.87.7
verbose.level helpful
interactive is False
platform is darwin
numerix numpy 1.0.2.dev3522
font search path
['/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/mpl-data']
loaded ttfcache file /Users/chris/.matplotlib/ttffont.cache
backend TkAgg version 8.4
Traceback (most recent call last):
  File "plot.py", line 20, in ?
    main()
  File "plot.py", line 16, in main
    plot(range(10), range(10))
  File
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/pylab.py",
line 2038, in plot
    b = ishold()
  File
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/pylab.py",
line 937, in ishold
    return gca().ishold()
  File
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/pylab.py",
line 883, in gca
    ax =  gcf().gca(**kwargs)
  File
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/figure.py",
line 679, in gca
    return self.add_subplot(111, **kwargs)
  File
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/figure.py",
line 506, in add_subplot
    a = Subplot(self, *args, **kwargs)
  File
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axes.py",
line 4911, in __init__
    Axes.__init__(self, fig, [self.figLeft, self.figBottom,
  File
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axes.py",
line 439, in __init__
    self._init_axis()
  File
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axes.py",
line 470, in _init_axis
    self.xaxis = XAxis(self)
  File
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axis.py",
line 514, in __init__
    self.cla()
  File
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axis.py",
line 535, in cla
    self.set_major_formatter(ScalarFormatter())
  File
"/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/ticker.py",
line 271, in __init__
    self._powerlimits = rcParams['axes.formatter.limits']
KeyError: 'axes.formatter.limits'



-- 
Chris Fonnesbeck + Atlanta, GA + http://trichech.us

On 1/31/07, Chris Fonnesbeck <ch...@tr...> wrote:

> I am still getting this problem. Here is an ipython traceback of a very
> simple plot:
>
> In [1]: from pylab import *

Chris, try

xmode verbose


in ipython right before running your code.  This will make the
traceback dump even more detail, which may help John and his evil
minions track down your little critter even faster.

Cheers,

f

>>>>> "Chris" == Chris Fonnesbeck <ch...@tr...> writes:

    Chris> The thing is, I deleted my entire ~/.matplotlib directory,
    Chris> hoping to start clean. Where does matplotlib get its info
    Chris> when a .matplotlibrc is not present in my home directory?

It first looks in the current working dir and then in ~/.matplotlib

Try running a sample script with --verbose-helpful and it will tell
you which file is being read...

JDH

Gary Ruben wrote:
> I just picked up a problem posted over on the numpy list. I noticed that
> from pylab import * is importing the oldnumeric-wrapper versions of
> zeros(), ones() and empty(), and presumably other things too, into the
> interactive namespace. Shouldn't it be picking up the versions from
> numpy's main namespace for interactive use?

My understanding is that pylab (and Numerix) is maintaining backward 
compatibility with itself, so the oldnumeric  form is the right one.

Another reason NOT to EVER use "import *"

Before too long, hopefully we'll only have to deal with numpy.

-Chris

-- 
Christopher Barker, Ph.D.
Oceanographer

Emergency Response Division
NOAA/NOS/OR&R            (206) 526-6959   voice
7600 Sand Point Way NE   (206) 526-6329   fax
Seattle, WA  98115       (206) 526-6317   main reception

Chr...@no...

On 1/6/07, Eric Firing <ef...@ha...> wrote:
>
> Chris,
>
> I suspect it is a problem with your matplotlibrc file; you could try
> stripping it down to bare minimum, as in the svn root directory.
> Another possibility is that your update is somehow incomplete or
> scrambled with an earlier installation.
>
> If that doesn't work, try making a minimal script that illustrates the
> problem.
>
> examples/newscalarformatter_demo.py works fine, so I don't think the
> basic subplot mechanism is broken.
>
>
> Chris Fonnesbeck wrote:
> > I have just updated to a matplotlib build from SVN, and now all my
> > subplots generate errors:
> >
> > (Pdb) rows
> > Out[3]: 2
> > (Pdb) columns
> > Out[3]: 2
> > (Pdb) num
> > Out[3]: 1
> > (Pdb) subplot(rows, columns, num)
> > *** KeyError: 'axes.formatter.limits'
>
> I think this is a valid key in rcParams.
>
> Doesn't the error trigger a full traceback that shows where it is coming
> from?
>

>
I am still getting this problem. Here is an ipython traceback of a very
simple plot:

In [1]: from pylab import *

In [2]: plot([3,45,6],[7,9,2])
---------------------------------------------------------------------------
exceptions.KeyError                                  Traceback (most recent
call last)

/Users/chris/<ipython console>

/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/pylab.py
in plot(*args, **kwargs)
   2036 def plot(*args, **kwargs):
   2037     # allow callers to override the hold state by passing
hold=True|False
-> 2038     b = ishold()
   2039     h = popd(kwargs, 'hold', None)
   2040     if h is not None:

/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/pylab.py
in ishold()
    935     Return the hold status of the current axes
    936     """
--> 937     return gca().ishold()
    938
    939 def isinteractive():

/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/pylab.py
in gca(**kwargs)
    881     """
    882
--> 883     ax =  gcf().gca(**kwargs)
    884     return ax
    885

/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/figure.py
in gca(self, **kwargs)
    677         ax = self._axstack()
    678         if ax is not None: return ax
--> 679         return self.add_subplot(111, **kwargs)
    680     gca.__doc__ = dedent(gca.__doc__) % artist.kwdocd
    681

/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/figure.py
in add_subplot(self, *args, **kwargs)
    504                 a = PolarSubplot(self, *args, **kwargs)
    505             else:
--> 506                 a = Subplot(self, *args, **kwargs)
    507
    508

/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axes.py
in __init__(self, fig, *args, **kwargs)
   4909         """
   4910         SubplotBase.__init__(self, fig, *args)
-> 4911         Axes.__init__(self, fig, [self.figLeft, self.figBottom,
   4912                                   self.figW, self.figH], **kwargs)
   4913

/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axes.py
in __init__(self, fig, rect, axisbg, frameon, sharex, sharey, label,
**kwargs)
    437
    438         # this call may differ for non-sep axes, eg polar
--> 439         self._init_axis()
    440
    441

/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axes.py
in _init_axis(self)
    468     def _init_axis(self):
    469         "move this out of __init__ because non-separable axes don't
use it"
--> 470         self.xaxis = XAxis(self)
    471         self.yaxis = YAxis(self)
    472

/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axis.py
in __init__(self, axes)
    512         self.minorTicks = []
    513
--> 514         self.cla()
    515
    516     def get_children(self):

/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/axis.py
in cla(self)
    533         'clear the current axis'
    534         self.set_major_locator(AutoLocator())
--> 535         self.set_major_formatter(ScalarFormatter())
    536         self.set_minor_locator(NullLocator())
    537         self.set_minor_formatter(NullFormatter())

/Library/Frameworks/Python.framework/Versions/2.4/lib/python2.4/site-packages/matplotlib/ticker.py
in __init__(self, useOffset, useMathText)
    269         self.format = ''
    270         self._scientific = True
--> 271         self._powerlimits = rcParams['axes.formatter.limits']
    272
    273     def __call__(self, x, pos=None):

KeyError: 'axes.formatter.limits'

The thing is, I deleted my entire ~/.matplotlib directory, hoping to start
clean. Where does matplotlib get its info when a .matplotlibrc is not
present in my home directory?
Thanks

-- 
Chris Fonnesbeck + Atlanta, GA + http://trichech.us

I just picked up a problem posted over on the numpy list. I noticed that
from pylab import * is importing the oldnumeric-wrapper versions of
zeros(), ones() and empty(), and presumably other things too, into the
interactive namespace. Shouldn't it be picking up the versions from
numpy's main namespace for interactive use?

I picked this up because I use "ipython -pylab" and noticed that zeros()
etc. was generating integers instead of floats by default.

In ipython:

   Welcome to pylab, a matplotlib-based Python environment.
   For more information, type 'help(pylab)'.

In [1]: zeros?
Type:           function
Base Class:     <type 'function'>
String Form:    <function zeros at 0x010CA3F0>
Namespace:      Interactive
File:           c:\python24\lib\site-packages\numpy\oldnumeric\functions.py
Definition:     zeros(shape, typecode='l', savespace=0, dtype=None)
Docstring:
     zeros(shape, dtype=int) returns an array of the given
dimensions which is initialized to all zeros


In [2]: import numpy as n

In [3]: n.zeros?
Type:           builtin_function_or_method
Base Class:     <type 'builtin_function_or_method'>
String Form:    <built-in function zeros>
Namespace:      Interactive
Docstring:
     zeros((d1,...,dn),dtype=float,order='C')

Return a new array of shape (d1,...,dn) and type typecode with all
it's entries initialized to zero.

--
Gary R.

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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Has anyone else noticed a problem when saving an image (png) on windows.<br>
Hard to describe, .. but it seems that if there is lots of data to plot
and window size too big, or maximized, it cannot save the full plot
data stopping half way. (plot look fine on window). ....&nbsp; Interesting
reducing the window size can get to the point where can save the full
image.<br>
<br>
Good plot (small window size)<br>
<a class="moz-txt-link-freetext" href="http://members.optusnet.com.au/~steve_geo/MatPlotLibTests/12p5KInternalIR_InputGndGood.png">http://members.optusnet.com.au/~steve_geo/MatPlotLibTests/12p5KInternalIR_InputGndGood.png</a><br>
<br>
Failed plot (larger window size)<br>
<a class="moz-txt-link-freetext" href="http://members.optusnet.com.au/~steve_geo/MatPlotLibTests/12p5KInternalIR_InputGndFailed.png">http://members.optusnet.com.au/~steve_geo/MatPlotLibTests/12p5KInternalIR_InputGndFailed.png</a><br>
<br>
I get the same problem on two different systems:<br>
<b>Windows XP &amp; Python 2.4 &amp; matplotlib &amp; numarray 1.5.2</b><br>
matplotlib installed from matplotlib-0.87.6.win32-py2.4.exe<br>
matplotlibrc has <br>
<blockquote><i>backend&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : TkAgg<br>
numerix&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : numarray&nbsp; # numpy, Numeric or numarray<br>
interactive&nbsp; : False&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; # see <br>
  </i></blockquote>
<br>
<b>Windows 2000 &amp; Python 2.5 &amp; matplotlib &amp; numpy 1.0</b><br>
matplotlib installed from matplotlib-0.87.7.win32-py2.5.exe<br>
matplotlibrc has <br>
<blockquote><i>backend&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : TkAgg</i><br>
  <i>numerix&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : numpy&nbsp; # numpy, Numeric or numarray</i><br>
  <i>#interactive&nbsp; : False&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; # see <a class="moz-txt-link-freetext" href="http://matplotlib.s">http://matplotlib.s</a></i><br>
</blockquote>
<br>
find my data here<br>
<a class="moz-txt-link-freetext" href="http://members.optusnet.com.au/~steve_geo/MatPlotLibTests/ScanDataInternalIR_GndInput.log">http://members.optusnet.com.au/~steve_geo/MatPlotLibTests/ScanDataInternalIR_GndInput.log</a><br>
<br>
and the script here (only tested with numpy and numarray)<br>
<a class="moz-txt-link-freetext" href="http://members.optusnet.com.au/~steve_geo/MatPlotLibTests/irplot24.py">http://members.optusnet.com.au/~steve_geo/MatPlotLibTests/irplot24.py</a><br>
<br>
the command to reproduce the test is <br>
<font face="Courier New, Courier, monospace">irplot24.py --second=fft
--target=600000 ScanDataInternalIR_GndInput.log<br>
<br>
=================<br>
</font>Also it's also interesting to note the difference in load time
(sec) of the data between numarray and numpy for the same data.<br>
<b>Windows </b><b>2000 </b><b>&amp; Python 2.4 &amp; matplotlib &amp;
numarray</b><br>
X:\srg\MatPlotLibTests&gt;c:\python24\python ..\irplot24.py
--second=fft --target=600000 ScanDataInternalIR_GndInput.log<br>
Importing pylab library ........ 1.685<br>
Opening file and loading array .<b> 3.999<br>
</b><br>
<b>Windows 2000 &amp; Python 2.5 &amp; matplotlib &amp; numpy</b><br>
X:\srg\MatPlotLibTests&gt;c:\python25\python ..\irplot24.py
--second=fft --target=600000 ScanDataInternalIR_GndInput.log<br>
Importing pylab library ........ 0.882<br>
Opening file and loading array . <b>10.687</b><br>
<br>
<font face="Courier New, Courier, monospace"><br>
<br>
</font>Thanks for any comments<br>
Steve<font face="Courier New, Courier, monospace"><br>
</font>
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Hi,

Has anyone had experience running matplotlib in conjunction with 
mpi4py/mpich2 on Windows?

The following program hangs (python 2.4), even when running  with 
mpiexec -n 1 python <test.py>:

import pylab
from mpi4py import MPI

pylab.plot([1,2,3])
pylab.show()

but runs once the line pylab.show() is commented out. I haven't seen 
that behavior on Linux or Mac OS X. Thanks in advance for your help.

--Alex

Are matplotlib 64-bit Windows binaries available anywhere on the net?  I'm
running 64-bit Python (2.3 and 2.4) and I'm having trouble finding a
compatible matplotlib to use with it.

-Blake

On Sunday 28 January 2007 10:07:26 pm Jonathon Anderson wrote:
> It seems that xlim/ylim only set outside bounds. (Don't plot less than min,
> or more than max.) Is there any way to specify a plot range even if there's
> no data there? Like, if my graph plots [5,6,7,8], [5,7,3,6] could I specify
> that my plot should display x and y from 0 to 10?

it is straight forward:

plot([5,6,7,8],[5,7,3,6])
xlim(0,10)
ylim(0,10)

It seems that xlim/ylim only set outside bounds. (Don't plot less than min,
or more than max.) Is there any way to specify a plot range even if there's
no data there? Like, if my graph plots [5,6,7,8], [5,7,3,6] could I specify
that my plot should display x and y from 0 to 10?

~jonathon anderson

On 1/27/07, Eric Firing <ef...@ha...> wrote:
> Fernando,
>
> I think it is OK in svn now.

Much better, thanks!

Regards,

f

Fernando,

I think it is OK in svn now.

Eric

Fernando Perez wrote:
> Hi all,
> 
> this simple test
> 
> plot([3e-6,3e-5,3e-4])
> 
> 
> produces with current SVN a vertical axis with all labels as '0'.  I
> first saw this with some actual data I was working with this week, and
> I imagine this isn't intended behavior.
> 
> It's not a big deal, but I figured I'd report it.
> 
> Cheers,
> 
> f
> 
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Fernando,

Thanks.  That looks like a consequence of a change I made in the default 
switchover threshold between scientific notation and ordinary.  I will 
be happy to fix it, later today, I hope.  It's a pretty big bug.

Eric

Fernando Perez wrote:
> Hi all,
> 
> this simple test
> 
> plot([3e-6,3e-5,3e-4])
> 
> 
> produces with current SVN a vertical axis with all labels as '0'.  I
> first saw this with some actual data I was working with this week, and
> I imagine this isn't intended behavior.
> 
> It's not a big deal, but I figured I'd report it.
> 
> Cheers,
> 
> f
> 
> -------------------------------------------------------------------------
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to share your
> opinions on IT & business topics through brief surveys - and earn cash
> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

On Fri, 26 Jan 2007, Andrew Straw wrote:

> You may be encountering this bug: 
> http://code.astraw.com/debian_sarge_libc.html

Thanks for the tip.  I didn't manage to patch the bug in glibc6, but
based the discussion in

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=279294

I tried uninstalling my atlas3-sse packages, and the problem went
away.

-- 
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joh...@li...                    joh...@ae...
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Hi all,

this simple test

plot([3e-6,3e-5,3e-4])


produces with current SVN a vertical axis with all labels as '0'.  I
first saw this with some actual data I was working with this week, and
I imagine this isn't intended behavior.

It's not a big deal, but I figured I'd report it.

Cheers,

f