matplotlib-users Mailing List for matplotlib

I have successfully built and installed matplotlib 0.87.5 on OS X 
10.4, and both the pylab files and the matplotlib directory are in my 
site-packages folder. However, when I try to import matplotlib, 
nothing happens:
ActivePython 2.4.3 Build 11 (ActiveState Software Inc.) based on
Python 2.4.3 (#1, Apr 3 2006, 18:07:14)
[GCC 4.0.1 (Apple Computer, Inc. build 5247)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
 >>> import matplotlib
Traceback (most recent call last):
 File "<stdin>", line 1, in ?
ImportError: No module named matplotlib
 >>> import pylab
Traceback (most recent call last):
 File "<stdin>", line 1, in ?
 File "/Library/Frameworks/Python.framework/Versions/2.4/lib/ 
python2.4/site-packages/pylab.py", line 1, in ?
 from matplotlib.pylab import *
ImportError: No module named matplotlib.pylab
This does not occur with matplotlib from cvs, nor with previous 
versions of matplotlib. What could be the problem here?
Thanks,
--
Christopher Fonnesbeck
+ Atlanta, GA
+ fonnesbeck at mac.com
+ Contact me on AOL IM using email address

 Hi all,
I'm fairly new to matplotlib, and so far, I have not found an (easy)
way to plot error bars on a log-log plot. Is there a way to do that
easily (eg through the pylab interface), or do I have set up things
more manually?
Related to that, I'm also looking for a way to neatly produce upper
(or lower) limits on figures, either log-log or normal or a
combination. This is generally a problem in every plotting package,
but perhaps someone has a good pointer to this. Drawing arrows helps
(for example, down-pointing arrows for y-upper limits), but his often
needs to be done separately, as I do now in gnuplot (ie, the arrows
stand just on their own, and are not seen as limits by the plotting
package: for y-upper limits, I need to draw the horizontal error bars
separately, as well as draw the non-limit points separately).
If there's no relatively straightforward way, I'd be inclined to delve
into the pylab.errorbar routine, to try and change that so that's it's
suitable for log-log plots, and accepts limits (by eg supplying None
as an element of the Nx2 numpy array; obviously, limits only work for
asymmetric errorbars). But that may simply not be the best thing to
do, so any pointers to that would also be welcome.
Thanks,
 Evert