matplotlib-users

[Matplotlib-users] matplotlib, ipython and ubuntu

[Andy C. <And...@br...>]

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

Re: [Matplotlib-users] matplotlib, ipython and ubuntu

[Tim M. <tim...@gm...>]

Hello,
for me it works:
****
timmie@localhost:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=7.10
DISTRIB_CODENAME=gutsy
DISTRIB_DESCRIPTION="Ubuntu 7.10"
timmie@localhost:~$ ipython -pylab
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.

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

I would suggest to reinstall the necessary packages.

Kind regards,
Timmie

Re: [Matplotlib-users] matplotlib, ipython and ubuntu

[Tim M. <tim...@gm...>]

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

[Matplotlib-users] how to erase items in figures

[j v. <jim...@no...>]

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

Re: [Matplotlib-users] how to erase items in figures

[Andy C. <And...@br...>]

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/
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>
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> Matplotlib-users mailing list
> Mat...@li...
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Re: [Matplotlib-users] how to erase items in figures

[John H. <jd...@gm...>]

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

Re: [Matplotlib-users] matplotlib, ipython and ubuntu

[postmaster <pos...@aj...>]

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 Mon, 28 Jan 2008 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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| al...@aj...          | And a Heaven in a Wild Flower,         |
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Re: [Matplotlib-users] matplotlib, ipython and ubuntu

[Fernando P. <fpe...@gm...>]

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

Re: [Matplotlib-users] matplotlib, ipython and ubuntu

[Tim M. <tim...@gm...>]

Hello Fernando,

>> <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
*** my output ***
$ 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 Numeric

In [2]: print Numeric.ArrayType
---------------------------------------------------------------------------
<type 'exceptions.AttributeError'>        Traceback (most recent call last)

/home/timmie/<ipython console> in <module>()

<type 'exceptions.AttributeError'>: 'module' object has no attribute 
'ArrayType'

In [3]: Numeric?
Type:           module
Base Class:     <type 'module'>
String Form:    <module 'Numeric' from 
'/home/timmie/development/python/modules/modules_library/Numeric/__init__.pyc'>
Namespace:      Interactive
File: 
/home/timmie/development/python/modules/modules_library/Numeric/__init__.py
Docstring:
     <no docstring>


In [4]:

*** end code ***


=> You were absolutely right:
I had another Numeric package install in my PYTHONPATH. It overwrode the 
system package at:
/usr/lib/python2.5/site-packages/Numeric/Numeric.py

I just deleted 
/home/timmie/development/python/modules/modules_library/Numeric and now 
everything to goes nice. I can use my Ipython again with numerics ;-)
Well, I guess the problem arose from the a time when I didn't have 
network access.
I just threw python modules from the net into my PYTHONPATH without 
using the Synaptic package manager.

Nice that this is now solved. Thanks for your quick answer and help!

Kind regards,
Timmie