matplotlib-users Mailing List for matplotlib

On Jan 29, 2008 4:13 PM, Tim Michelsen <tim...@gm...> wrote:
> In [1]: import timeseries as TS
>
> In [2]: whos
> ---------------------------------------------------------------------------
> <type 'exceptions.AttributeError'> Traceback (most recent call last)
>
> /var/tmp/install/qgislite_trunk/<ipython console> in <module>()
>
> /var/lib/python-support/python2.5/IPython/iplib.py in ipmagic(self, arg_s)
> 962 else:
> 963 magic_args = self.var_expand(magic_args,1)
> --> 964 return fn(magic_args)
> 965
> 966 def ipalias(self,arg_s):
>
> /var/lib/python-support/python2.5/IPython/Magic.py in magic_whos(self,
> parameter_s)
> 989 array_type = None
> 990 else:
> --> 991 array_type = Numeric.ArrayType.__name__
> 992
> 993 # Find all variable names and types so we can figure
> out column sizes
>
> <type 'exceptions.AttributeError'>: 'module' object has no attribute
> 'ArrayType'
>
> maybe some of the IPython power users can give me a hint why this
> happes. [1]
Very strange. I can't reproduce it here (on gutsy, but running
ipython from my own tree). What's odd is this:
In [1]: import Numeric
In [2]: print Numeric.ArrayType
<type 'array'>
So Numeric *most definitely* has an ArrayType member. Try doing the
same as I did, also showing us whether you started ipython with -pylab
or not. There may be something odd about your Numeric installation.
Also do this:
In [3]: Numeric?
Type: module
Base Class: <type 'module'>
Namespace: Interactive
File: /usr/lib/python2.5/site-packages/Numeric/Numeric.py
[etc]
It's possible that you have in your path a file called Numeric.py
which is not the 'real' Numeric module. This would explain your
problem and why nobody else sees it.
Cheers,
f

Hello!
> Hmm, I did reinstall and still no joy, it insists on install python2.4 
> at the same time!
do a
$: sudo apt-get --purge remove matplotlib ipython
to really remove the configuration files. then
$: sudo apt-get install matplotlib ipython
check if pylab is on your system:
$: locate pylab
Here are the contents of pylab:
from matplotlib.pylab import *
so you may just test this in a python shell:
$ python
Python 2.5.1 (r251:54863, Oct 5 2007, 13:36:32)
[GCC 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
 >>> from matplotlib.pylab import *
 >>>
then do the same from within ipython as I'd shown in my previous mail.
I hope that this helps you to narrow it down.
I have also some troubles with ipython that is currently in Gutsy:
 ipython
Python 2.5.1 (r251:54863, Oct 5 2007, 13:36:32)
Type "copyright", "credits" or "license" for more information.
IPython 0.8.1 -- An enhanced Interactive Python.
? -> Introduction to IPython's features.
%magic -> Information about IPython's 'magic' % functions.
help -> Python's own help system.
object? -> Details about 'object'. ?object also works, ?? prints more.
In [1]: import timeseries as TS
In [2]: whos
---------------------------------------------------------------------------
<type 'exceptions.AttributeError'> Traceback (most recent call last)
/var/tmp/install/qgislite_trunk/<ipython console> in <module>()
/var/lib/python-support/python2.5/IPython/iplib.py in ipmagic(self, arg_s)
 962 else:
 963 magic_args = self.var_expand(magic_args,1)
--> 964 return fn(magic_args)
 965
 966 def ipalias(self,arg_s):
/var/lib/python-support/python2.5/IPython/Magic.py in magic_whos(self, 
parameter_s)
 989 array_type = None
 990 else:
--> 991 array_type = Numeric.ArrayType.__name__
 992
 993 # Find all variable names and types so we can figure 
out column sizes
<type 'exceptions.AttributeError'>: 'module' object has no attribute 
'ArrayType'
maybe some of the IPython power users can give me a hint why this 
happes. [1]
I have already filed a bug report to Ubuntu but are not able to explain 
more:
magic function whos not working in ipython
https://bugs.launchpad.net/ubuntu/+source/ipython/+bug/177253
Kind regards,
Timmie
[1] Thats Why I crosspost to ipython-user. Inital post was: 
http://permalink.gmane.org/gmane.comp.python.matplotlib.general/11463

In [1]:plot(arange(10))
Out[1]:[<matplotlib.lines.Line2D object at 0x908ee0c>]
In [2]:ax = gca()
In [3]:ax.set_ylim(ax.get_ylim()[::-1])
Out[3]:(9.0, 0.0)
In [4]:draw()
In [5]:
The method in line 3 should work on new and old versions of matplotlib. 
The basic idea is that when axis limits are set, you specify the bottom, 
then the top (or the right, then the left), not min and then max.
Eric
Daehyok Shin wrote:
> I like to reverse the direction of y axis - from top to bottom.
> Anyone to help me?
> I initially thought it may be easy, but it turned out much harder to
> find THE SOLUTION.
> Thanks.
> 
> Daehyok Shin
> 
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I like to reverse the direction of y axis - from top to bottom.
Anyone to help me?
I initially thought it may be easy, but it turned out much harder to
find THE SOLUTION.
Thanks.
Daehyok Shin

Hi,
I use matplotlib frequenctly on Python 2.4.x. . Recently changed to Python
2.5.1 (upgraded to numpy 1.0.4, matplotlib 0.91.2, scipy 0.6).
The Tkinter graphics does not work anymore. I tried the code snippet below
and got a blank window and message box:
python.exe unknown software exception.
I use Windows XP SP2.
Any comments on this are very much appreciated.
Best regards
Michael
----------------------------------
import pylab as py
import numpy as num
t = num.arange(0.0, 2.0, 0.01)
s = num.sin(2*num.pi*t)
py.figure()
py.plot(t, s, linewidth=1.0)
py.xlabel('time (s)')
py.ylabel('voltage (mV)')
py.title('About as simple as it gets, folks')
py.grid(True)
py.show()
--------------------------

The axes3d stuff is not currently working on the SVN trunk. You 
probably want to use 0.91.2 or the v0_91_maint branch in SVN instead.
Cheers,
Mike
Johann Cohen-Tanugi wrote:
> hello,
> thanks for answering. I actually fail with the import :
> In [1]: from matplotlib import axes3d
> ---------------------------------------------------------------------------
> ImportError Traceback (most recent call last)
> 
> /home/cohen/bstw/<ipython console> in <module>()
> 
> /usr/lib/python2.5/site-packages/matplotlib/axes3d.py in <module>()
> 14 from axes import Axes
> 15 import cbook
> ---> 16 from transforms import unit_bbox
> 17
> 18 import numpy as npy
> 
> ImportError: cannot import name unit_bbox
> 
> any idea?
> 
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: 2008年1月27日 22:18:00 +0000
>> From: "Neil Crighton" <nei...@gm...>
>> Subject: Re: [Matplotlib-users] plotting a series of 3D points and
>> 	picker=True and 3D
>> To: mat...@li...
>> Message-ID:
>> 	<637...@ma...>
>> Content-Type: text/plain; charset=ISO-8859-1
>>
>> I think scatter3D does what you want:
>>
>> from matplotlib import axes3d
>> import pylab as pl
>> fig = pl.figure()
>> ax = axes3d.Axes3D(fig)
>> ax.scatter3D(data[:,0],data[:,1],data[:,2])
>> ax.set_xlabel('X value')
>> ax.set_ylabel('Y value')
>> ax.set_zlabel('Z value')
>> pl.show()
>>
>> You could also change the colour and size of each point based on other
>> array values:
>>
>> col = ax.scatter3D(data[:,0], data[:,1], data[:,2], c=data[:,3],
>> cmap=pl.cm.jet, s=data[:,4])
>> cbar = fig.colorbar(col,shrink=0.9,extend='both')
>> cbar.ax.set_ylabel('axis 3 data values')
>>
>> Pretty nifty.
>>
>> Neil
>>
>> 
>>
> 
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-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

hello,
thanks for answering. I actually fail with the import :
In [1]: from matplotlib import axes3d
---------------------------------------------------------------------------
ImportError Traceback (most recent call last)
/home/cohen/bstw/<ipython console> in <module>()
/usr/lib/python2.5/site-packages/matplotlib/axes3d.py in <module>()
 14 from axes import Axes
 15 import cbook
---> 16 from transforms import unit_bbox
 17
 18 import numpy as npy
ImportError: cannot import name unit_bbox
any idea?
> ----------------------------------------------------------------------
>
> Message: 1
> Date: 2008年1月27日 22:18:00 +0000
> From: "Neil Crighton" <nei...@gm...>
> Subject: Re: [Matplotlib-users] plotting a series of 3D points and
> 	picker=True and 3D
> To: mat...@li...
> Message-ID:
> 	<637...@ma...>
> Content-Type: text/plain; charset=ISO-8859-1
>
> I think scatter3D does what you want:
>
> from matplotlib import axes3d
> import pylab as pl
> fig = pl.figure()
> ax = axes3d.Axes3D(fig)
> ax.scatter3D(data[:,0],data[:,1],data[:,2])
> ax.set_xlabel('X value')
> ax.set_ylabel('Y value')
> ax.set_zlabel('Z value')
> pl.show()
>
> You could also change the colour and size of each point based on other
> array values:
>
> col = ax.scatter3D(data[:,0], data[:,1], data[:,2], c=data[:,3],
> cmap=pl.cm.jet, s=data[:,4])
> cbar = fig.colorbar(col,shrink=0.9,extend='both')
> cbar.ax.set_ylabel('axis 3 data values')
>
> Pretty nifty.
>
> Neil
>
> 
>

You shouldn't ever find a setup.py file in a binary distribution. It
is there for building purposes, hence should be with the source
distributions.
- Charlie
On Tue, Jan 29, 2008 at 10:47 AM, Jeff Younker <je...@dr...> wrote:
> I'm running on OSX 10.5.
>
> The installation process for me was the following two commands:
> $ easy_install matplotlib
> $ easy_install numpy
>
> That's it. You don't need to manually download the egg. You don't
> need to root around in the egg. Just run easy_install. It retrieves
> the
> egg and installs it in the correct location.
>
> - Jeff Younker - je...@dr... -
>
>
>
>
> On Jan 28, 2008, at 9:29 PM, Michael Barton wrote:
>
> > I wanted to test MatPlotLib for use in a GIS system for which I help
> > develop the GUI in wxPython. I'm working on a Mac Intel OSX 10.4.11
> > system.
> >
> > The installation instructions for OS X are very sketchy and there is
> > no readme in the binary. But AFAICT, there ought to be a setup.py
> > file in the fat egg distribution folder. However, there is no such
> > beast. There is only pylab.py and that isn't a distribution build
> > utility.
> >
> > Since I'm not a member of the list, I'd appreciate it if someone
> > could email me directly.
> >
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>

 Hi,
I would like to annotate a bunch of points on a map.
I'm trying to use the annotate function, but it need to know the text
coordinates.
So you have to configure manually in order not to have these annotations
overlap each other.
This is really annoying.
Is there a way to :
 - detect the "best" position for theses annotation as with loc="best"
argument of the legend function ?
 - let me move theses annotations with the mouse ?
 I've heard that matplotlib gives the possibility of using events and
signals. Can this be used in this situation ?
 Is there any example for this ?
Regards,
-- 
BL

On Jan 29, 2008 9:46 AM, Slackenerny <sla...@pu...> wrote:
> Hey,
> I'm currently plotting a dataset as x,y-scatter or a set of x values,
> and I would like to know if there is a simple way to highlight a
when I want to highlight a single point, I frequently use something
like the following trick:
x, y = np.random.rand(2, 30)
plot(x, y, 'o', ms=6, mfc='blue')
ind = 10 # highlight the 10th point
plot([x[ind]], [y[ind]], 'o', ms=15, mfc='yellow', alpha=0.4)
> Additional information: there is a second window with changing chemical
> structures, and I would like to have the energy that is connected to
> the structure shown at that very moment to be highlighted...
You should be able to connect events in one window with line
properties in the other to accomplish this -- let us know if you need
any help with this.
JDH

Hey,
I'm currently plotting a dataset as x,y-scatter or a set of x values,
and I would like to know if there is a simple way to highlight a
single point?
Additional information: there is a second window with changing chemical
structures, and I would like to have the energy that is connected to
the structure shown at that very moment to be highlighted...
best wishes

I'm running on OSX 10.5.
The installation process for me was the following two commands:
$ easy_install matplotlib
$ easy_install numpy
That's it. You don't need to manually download the egg. You don't
need to root around in the egg. Just run easy_install. It retrieves 
the
egg and installs it in the correct location.
- Jeff Younker - je...@dr... -
On Jan 28, 2008, at 9:29 PM, Michael Barton wrote:
> I wanted to test MatPlotLib for use in a GIS system for which I help 
> develop the GUI in wxPython. I'm working on a Mac Intel OSX 10.4.11 
> system.
>
> The installation instructions for OS X are very sketchy and there is 
> no readme in the binary. But AFAICT, there ought to be a setup.py 
> file in the fat egg distribution folder. However, there is no such 
> beast. There is only pylab.py and that isn't a distribution build 
> utility.
>
> Since I'm not a member of the list, I'd appreciate it if someone 
> could email me directly.
>

John Hunter wrote:
> On Jan 29, 2008 8:33 AM, Robert Cimrman <cim...@nt...> wrote:
>> Is there a way of simultaneously setting both xdata and ydata of a line?
>> I need to animate a line with varying number of points in each frame.
> 
> line.set_data(xdata, ydata)
> 
> is what you are looking for
Great! I did not see that one.
r.

On Jan 29, 2008 8:33 AM, Robert Cimrman <cim...@nt...> wrote:
>
> Is there a way of simultaneously setting both xdata and ydata of a line?
> I need to animate a line with varying number of points in each frame.
line.set_data(xdata, ydata)
is what you are looking for
JDH

Is there a way of simultaneously setting both xdata and ydata of a line? 
I need to animate a line with varying number of points in each frame.
regards,
r.

On Jan 28, 2008 2:06 PM, j vickroy <jim...@no...> wrote:
> Hello users,
>
> I wish to repeatedly re-plot labels and contour data on a figure since
> redrawing the figure is temporally expensive. The attached script (I
> apologize for its length), hopefully, illustrates a simplified version
> of what I'm trying to do -- contour temporally-varying data on a map
> projection.
matplotlib has some support for the kinds of things you are trying to
do -- eg draw an expensive part of the figure, save it, plot something
on top of it, erase it, restore the original figure, etc. This is
convered in some detail in the animation cookbook recipe. Although
you are not doing animation, the concepts are quite similar in that
both require copying and restoring a background, and updating the
"animated" object.
http://www.scipy.org/Cookbook/Matplotlib/Animations
JDH

The error was due to muppetdom of the highest degree... I've created a 
bash alias which subsituted ipython with ipython ---options. Subsequent 
use of ipython -pylab put the -pylab tab at the end and it was quietly 
ignored
Sorry to waste people time
Andy
j vickroy wrote:
> Hello users,
>
> I wish to repeatedly re-plot labels and contour data on a figure since 
> redrawing the figure is temporally expensive. The attached script (I 
> apologize for its length), hopefully, illustrates a simplified version 
> of what I'm trying to do -- contour temporally-varying data on a map 
> projection.
>
> I do not understand how to erase the plot label each time the figure 
> is to be reused. I also do not know how to erase the contour-fill 
> although, based on the generated PNG files, it does not, for unknown 
> reasons , appear to be necessary. From some postings, it seems that I 
> have to employ collections attributes, but I have not been able to 
> find documentation or examples that illustrate this.
>
> My system:
>
> * matplotlib.__version__: '0.91.2'
> * sys.version: '2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC
> v.1310 32 bit (Intel)]'
>
>
> Thanks,
> -- jv
> ------------------------------------------------------------------------
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> ------------------------------------------------------------------------
>
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

I wanted to test MatPlotLib for use in a GIS system for which I help 
develop the GUI in wxPython. I'm working on a Mac Intel OSX 10.4.11 
system.
The installation instructions for OS X are very sketchy and there is 
no readme in the binary. But AFAICT, there ought to be a setup.py 
file in the fat egg distribution folder. However, there is no such 
beast. There is only pylab.py and that isn't a distribution build 
utility.
Since I'm not a member of the list, I'd appreciate it if someone 
could email me directly.
Thanks
Michael Barton
____________________
C. Michael Barton, Professor of Anthropology
Director of Graduate Studies
School of Human Evolution & Social Change
Center for Social Dynamics & Complexity
Arizona State University
Phone: 480-965-6262
Fax: 480-965-7671
www: <www.public.asu.edu/~cmbarton>

I just migrated from edgy to gutsy this weekend. I did a clean install (boy it really
went smoothly - either I'm getting better or the installs are) and it all works fine
for me. I used Adept Manager to install everything. You installed numpy? I'm running
kubuntu.
On 2008年1月28日 17:39:45 +0000
Andy Cheesman <And...@br...> wrote:
> Hi people
> 
> I'm trying to use matplotlib, ipython and xubuntu(gusty) all together. 
> Whenever I try to run ipython with -pylab tab, nothing extra happens to 
> the start up screen and pylab hasn't been imported. I have managed to 
> sucessfull install ipython and matplotlib on a Redhat system and ipython 
> -pylab works. ipython and matplotlib work btw
> 
> I've tried install from source, apt and easy_install all to to avail
> 
> Can anyone suggest what I am doing wrong or an output to post to show 
> more details of what is happening on my machine
> 
> Thanks
> 
> Andy
> 
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
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