matplotlib-users Mailing List for matplotlib

Hi all

First, a small bug:

In [4]: s =3D subplot(121)

In [5]: getp(s.get_frame())
-------------------------------------------------------------------------=
--
exceptions.TypeError                                 Traceback (most rece=
nt call last)

/home/stefan/work/scipy/debug/<ipython console>=20

/home/stefan/lib/python2.4/site-packages/matplotlib/artist.py in getp(o, =
*args)
    410=20
    411     if len(args)=3D=3D0:
--> 412         print '\n'.join(insp.pprint_getters())
    413         return
    414=20

/home/stefan/lib/python2.4/site-packages/matplotlib/artist.py in pprint_g=
etters(self)
    377             try: val =3D func()
    378             except: continue
--> 379             if hasattr(val, 'shape') and len(val)>6:
    380                 s =3D str(val[:6]) + '...'
    381             else:

TypeError: len() of unsized object


One way to fix this would be to change line 379 in artist.py from

            if hasattr(val, 'shape') and len(val)>6:

to

            if hasattr(val, 'size') and val.size > 6:

Now on to my real question.  Say I have a screen of 4x4 subplots,
created with subplot(221).  I'd like to be able to split the screen
as such:
 __ __
|  |  |
|  |  |
|--|  |
|  |  |
|__|__|

I.e., to draw in the window on the right:

subplot(2,2,[2,4])

Is there currently an easy way to do this, or would I have to combine
axes manually?

Any tips appreciated!

Thanks
St=E9fan

I was able to install from the .egg file.  I'm still getting the same 
error when attempting to import though.  Namely:

 >>>from pylab import *
Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
   File 
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/matplotlib-0.87.6-py2.5-macosx-10.3-fat.egg/pylab.py", 
line 1, in <module>
     from matplotlib.pylab import *
   File 
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/matplotlib-0.87.6-py2.5-macosx-10.3-fat.egg/matplotlib/pylab.py", 
line 220, in <module>
     new_figure_manager, draw_if_interactive, show = pylab_setup()
   File 
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/matplotlib-0.87.6-py2.5-macosx-10.3-fat.egg/matplotlib/backends/__init__.py", 
line 23, in pylab_setup
     globals(),locals(),[backend_name])
   File 
"/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/matplotlib-0.87.6-py2.5-macosx-10.3-fat.egg/matplotlib/backends/backend_wxagg.py", 
line 19, in <module>
     import wx
ImportError: No module named wx

Do I need to download and install the wx module or is there a way to 
check and see if I have another backend available that I can use with 
matplotlib and a way to tell matplotlib to use it?
-- 

R. Padraic Springuel
Teaching Assistant
Department of Physics and Astronomy
University of Maine
Bennett 309
Office Hours: Wednesday 2-3pm

Hi,

due to limited white space in my figures, I would like to be
able to split up a single big legend into multiple (usually 2) smaller ones.

 ###############################
 Example (adapted from simple_plot.py):


 from pylab import *

 t = arange(0.0, 2.0, 0.01)
 s = sin(2*pi*t)
 plot(t, s, linewidth=1.0)

 s = sin(4*pi*t)
 plot(t, s, color='r',linewidth=1.0)

 grid(True)
 mylegend = legend(('Graph 1','Graph 2'),

                   loc='lower right',axespad=0.07,labelsep=0.04)

 # modify legend
 mylegend.draw_frame(False)
 mylegendtext = mylegend.get_texts()
 mylegendlines = mylegend.get_lines()
 setp(mylegendtext, fontsize=15)

 setp(mylegendlines, linewidth=1.2)

 show()
 ##############################

 I would like to split the legend up to into two.
 One for "Graph 1" and one for "Graph 2" to be

 able to place them where white space is available.

 Is there an easy way to do this in matplotlib?

 Thanks.

  - Christian



P.S.: I have asked the same question 3 months ago and did not get

any replies. Perhaps someone else has stumbled over this by now...

In order get pylab to work on my Mac I have to do the following (found 
by some experimenting):

import matplotlib
matplotlib.use("WXAgg")
import pylab

Does this seem right?  I mean, it works, but it seems to be a little 
gymnastics to go through rather than just doing

import pylab

which gives

ImportError: No module named gobject

since it can't seem to find that backend in the "backend" directory when 
it tries to import backend_gtkagg.py.  I guess that doesn't work on the 
Mac. 


My setup:   (Tiger 10.4) Al Laptop, Python 2.4, latest pylab from SciPy 
package.

-- 
Cheers,

Lou Pecora

Code 6362
Naval Research Lab
Washington, DC  20375
USA
Ph:  +202-767-6002
email:  pe...@an...

>>>>> "Xavier" =3D=3D Xavier Gnata <gn...@ob...> writes:

    Xavier> Hi, Matplotlib svn tree does not compile anymore since a
    Xavier> few days :

Have you upgraded your compiler recently?  It compiles fine for me
with an older version

> gcc --version
gcc (GCC) 3.3.5 (Debian 1:3.3.5-8ubuntu2.1)

    Xavier> C++ ./CXX/Objects.hxx:1938: error: parse error in template
    Xavier> argument list ./CXX/Extensions.hxx: In constructor
    Xavier> =F8Py::PythonExtension<T>::PythonExtension() [with T =3D
    Xavier> Py::ExtensionModuleBasePtr]=F9: CXX/cxx_extensions.cxx:90:
    Xavier> instantiated from here ./CXX/Extensions.hxx:477: warning:

Nothing in this part of the code has changed for a while -- when was
the last time you successfully compiled.  Can you try compiling an
older revision to figure out if something in the code base has changed
or something in your compiler/platform

> svn log CXX/Objects.hxx
------------------------------------------------------------------------
r2778 | cmoad | 2006-09-20 20:03:00 -0500 (Wed, 20 Sep 2006) | 2 lines

Applied python2.5 build patch submitted on SF

------------------------------------------------------------------------
r1697 | jdh2358 | 2005-08-31 14:13:44 -0500 (Wed, 31 Aug 2005) | 2
lines

added strip chart example

------------------------------------------------------------------------
r1070 | jdh2358 | 2005-03-11 14:00:59 -0600 (Fri, 11 Mar 2005) | 2
lines

upgraded cxx


The most likely candidate that is screwing you up is the r2778 so you
might try a revision before and after that.  What python are you using
-- this patch was applied to fix a python2.4 bug.

JDH

Hi,

Matplotlib svn tree does not compile anymore since a few days :

gcc: CXX/cxx_extensions.cxx
cc1plus: warning: command line option "-Wstrict-prototypes" is valid for 
Ada/C/ObjC but not for C++
./CXX/Objects.hxx:1938: error: parse error in template argument list
./CXX/Extensions.hxx: In constructor 
‘Py::PythonExtension<T>::PythonExtension() [with T = 
Py::ExtensionModuleBasePtr]’:
CXX/cxx_extensions.cxx:90: instantiated from here
./CXX/Extensions.hxx:477: warning: right-hand operand of comma has no effect
cc1plus: warning: command line option "-Wstrict-prototypes" is valid for 
Ada/C/ObjC but not for C++
./CXX/Objects.hxx:1938: error: parse error in template argument list
./CXX/Extensions.hxx: In constructor 
‘Py::PythonExtension<T>::PythonExtension() [with T = 
Py::ExtensionModuleBasePtr]’:
CXX/cxx_extensions.cxx:90: instantiated from here
./CXX/Extensions.hxx:477: warning: right-hand operand of comma has no effect
error: Command "gcc -pthread -fno-strict-aliasing -DNDEBUG -g -O2 -Wall 
-Wstrict-prototypes -fPIC -Isrc -I. -I/usr/local/include -I/usr/include 
-I. -I/usr/include/python2.4 -c CXX/cxx_extensions.cxx -o 
build/temp.linux-i686-2.4/CXX/cxx_extensions.o -DNUMARRAY=1" failed with 
exit status 1

gcc -v : gcc version 4.1.2

Am I missing something?

Xavier.

-- 
############################################
Xavier Gnata
CRAL - Observatoire de Lyon
9, avenue Charles André
69561 Saint Genis Laval cedex
Phone: +33 4 78 86 85 28
Fax: +33 4 78 86 83 86
E-mail: gn...@ob...
############################################ 

On Thu, 12 Oct 2006, Lionel Roubeyrie wrote:=20
> here the third version of windrose.py=20

This is great.
I think moving the labels farther out would be nicer
(e.g., http://www.pscleanair.org/airq/windrose/default.aspx )

Cheers,
Alan Isaac

Hi all,
continuing on the windroses, here the third version of windrose.py, with two 
others styles (line and bar2 (is it what you want Derek?)). I want to know 
how it's possible to modify the legends to be on axes, and not on the figure 
like in the ex4.png subplots example. I have another problem with set_rgrids, 
setting set_axisbelow True or False doesn't change anything, is there a 
special way to make it working?
Thanks 

-- 
Lionel Roubeyrie - lro...@li...
LIMAIR
http://www.limair.asso.fr

I've been working to get stacked area plots working.  The basic plotting was
pretty easy, but getting good readable legends for the colors has been a
nightmare.  Perhaps if I share what I've done, someone will have some
suggestions.  My code is attached.

The only way I've come up with to get a readable legend is to cheat and use a
table with a cell per series.  If I just do this in the naive way, the table
ends up on top of the x axis label text.  So I put it into a subplot.  Then I
seem to have trouble controlling the the size of the table and cell font
size.  If I render with gtk and resize the window, why doesn't the text resize
to take advantage of the new cell sizes?

Also, is there a better way to come up with a color set for the filled areas.
Ideally, I'd get a set of N distinct light (because you want to read black
foregroudn text) colors that would be fairly easy to identify.

It seems like I'm fighting the wrong battle.  Thanks in advance for
suggestions.