matplotlib-users Mailing List for matplotlib

On Wed, 21 Nov 2007, Rich Shepard wrote:

>   I'm missing some understanding here, and cannot build matplotlib-0.90.1
> nor the apparently missing libraries. This workstation is currently
> running Slackware-11.0 with the following installed (or missing, in the
> case of PyGObject):

   Got this resolved: turns out to be a highly unusual dependency on kernel
headers earlier than those of the running kernel.

   However, why are all of the ~/.matplotlib/matplotlibrc options for LINES,
PATCHES, FONT, etc. all commented out?

Rich

-- 
Richard B. Shepard, Ph.D.               |  Integrity            Credibility
Applied Ecosystem Services, Inc.        |            Innovation
<http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863

   I'm missing some understanding here, and cannot build matplotlib-0.90.1
nor the apparently missing libraries. This workstation is currently running
Slackware-11.0 with the following installed (or missing, in the case of
PyGObject):

 	wxPython-2.8.0.1
 	wxGTK-2.8.0
 	pygobject: /usr/lib/pkgconfig/pygobject-2.0.pc; no PyGObject
 	pygtk-2.10.3

   Since I don't have a mental (or documented) map of how all the pieces fit
together, I'm not sure how to fix the problems encountered. The matplotlib
build fails because the compiler cannot find libraries that are present:

In file included from /usr/include/bits/errno.h:25,
                  from /usr/include/errno.h:36,
                  from /usr/include/python2.4/Python.h:38,
                  from src/_isnan.c:1:
/usr/include/linux/errno.h:4:23: asm/errno.h: No such file or directory
In file included from /usr/include/bits/errno.h:25,
                  from /usr/include/errno.h:36,
                  from /usr/include/python2.4/Python.h:38,
                  from src/_isnan.c:1:
/usr/include/linux/errno.h:4:23: asm/errno.h: No such file or directory
error: Command "gcc -pthread -fno-strict-aliasing -DNDEBUG -O3 -march=i486
-mtune=i686 -fPIC -I/usr/local/include -I/usr/include -I.
-I/usr/include/python2.4 -c src/_isnan.c -o
build/temp.linux-i686-2.4/src/_isnan.o" failed with exit status 1

   That is, /usr/include/linux/asm/error.h exists, and _isnan.c is present at
/tmp/SBo/matplotlib-0.90.1/src/_isnan.c
/usr/local/numpy/numpy/core/src/_isnan.c
/usr/local/matplotlib-0.87.7/src/_isnan.c

   When I try to run matplotlib examples from within ipython, invoking the
shell with the -pylab switch produces this error:

   File "/usr/lib/python2.4/site-packages/gtk-2.0/gtk/__init__.py", line 42,
in ?
     raise ImportError(
ImportError: PyGTK requires PyGObject 2.11.1 or higher, but () was found

   As noted above, I have the .pc file but that's all.

   I'd like guidance on how to fix this mess so I can build, learn, and use
matplotlib-0.90.1. Once I understand the relationships involved, I'll be
able to get the latest version built and running on my notebook which now
runs Slackware-12.0 with Python-2.5.1.

Rich

-- 
Richard B. Shepard, Ph.D.               |  Integrity            Credibility
Applied Ecosystem Services, Inc.        |            Innovation
<http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863

   While I've had 0.82 installed on my workstation and notebook, I've not
been ready to use it until now. I've just downloaded 0.90.1 and diff'd the
two matplotlibrc files. Is WXAgg no longer supported as a backend if the
plotting displays will be integral with the wxPython widget set?

   Also, why is everything in the rc file commented out? Are these all
default values (lines, fill, etc.) and need to be specified only when
different?

Rich

-- 
Richard B. Shepard, Ph.D.               |  Integrity            Credibility
Applied Ecosystem Services, Inc.        |            Innovation
<http://www.appl-ecosys.com>     Voice: 503-667-4517      Fax: 503-667-8863

Hello,
I have a contour with a clim smaller than the limits of my data... and 
because of this there is an error when I try to add a colorbar.
Can someone help?
Thanks
MMA

eg:

x=arange(20)
y=arange(30)
x,y=meshgrid(x,y)
v=sqrt(x+y)  # max=6.928, min=0.0

# next is ok
figure()
contour(x,y,v)
clim(0,7)
colorbar()

# next gives the error: "ValueError: levels are outside colorbar range"
figure()
contour(x,y,v)
clim(2,6)
colorbar()

I would like to have a secondary y-axis that has the same scale, but a
different label.  Also, I would like to draw a dashed line down the
center of the plot.

I have used,

ax1 =3D pcolor(a, shading=3D'flat', cmap=3Dcm.gray_r)
title('Intensity Pattern')
xlabel('Distance')
ylabel('Leaf B')

ax2=3Dtwinx()
ylabel('Leaf A')
ax2.yaxis.tick_right()

colorbar()

and the scale is different for the second y-axis as well as prints on
top of the colorbar.

-Bryan

"The game of science can accurately be described as a never-ending
insult to human intelligence."=09- Jo=E3o Magueijo