matplotlib-users Mailing List for matplotlib

On Mon, Sep 3, 2012 at 10:20 PM, Chao YUE <cha...@gm...> wrote:
> Thanks Damon, it's very clear now.
> I explicit set the backend as "GTKAgg" in my ipython user configuration
> file. and always set the backend to 'Agg' in my rc file. So that when I use
> ipython, I can see the window interactively, but when I use script, it also
> works :P
>
That's an awesome idea.
Glad it's working now.
> Chao
>
>
> On Mon, Sep 3, 2012 at 8:13 PM, Damon McDougall <dam...@gm...>
> wrote:
>>
>> On Mon, Sep 3, 2012 at 6:08 PM, Chao YUE <cha...@gm...> wrote:
>> > Yet if I don't want to change the rc file, I guess I must change in the
>> > modules where matplotlib has been imported for the first time?
>>
>> If you're changing the rc file in your home directory:
>>
>> ~/.matplotlib/matplotlibrc
>>
>> then just make a copy before you change it:
>>
>> cd ~/.matplotlib
>> cp matplotlibrc matplotlibrc_orig
>>
>> then edit matplotlibrc. Just rename matplotlibrc_orig back to
>> matplotlibrc when you're done.
>>
>> --
>> Damon McDougall
>> http://www.damon.is-a-geek.com
>> B2.39
>> Mathematics Institute
>> University of Warwick
>> Coventry
>> West Midlands
>> CV4 7AL
>> United Kingdom
>
>
>
>
> --
> ***********************************************************************************
> Chao YUE
> Laboratoire des Sciences du Climat et de l'Environnement (LSCE-IPSL)
> UMR 1572 CEA-CNRS-UVSQ
> Batiment 712 - Pe 119
> 91191 GIF Sur YVETTE Cedex
> Tel: (33) 01 69 08 29 02; Fax:01.69.08.77.16
> ************************************************************************************
>
-- 
Damon McDougall
http://www.damon.is-a-geek.com
B2.39
Mathematics Institute
University of Warwick
Coventry
West Midlands
CV4 7AL
United Kingdom

Thanks Damon, it's very clear now.
I explicit set the backend as "GTKAgg" in my ipython user configuration
file. and always set the backend to 'Agg' in my rc file. So that when I use
ipython, I can see the window interactively, but when I use script, it also
works :P
Chao
On Mon, Sep 3, 2012 at 8:13 PM, Damon McDougall
<dam...@gm...>wrote:
> On Mon, Sep 3, 2012 at 6:08 PM, Chao YUE <cha...@gm...> wrote:
> > Yet if I don't want to change the rc file, I guess I must change in the
> > modules where matplotlib has been imported for the first time?
>
> If you're changing the rc file in your home directory:
>
> ~/.matplotlib/matplotlibrc
>
> then just make a copy before you change it:
>
> cd ~/.matplotlib
> cp matplotlibrc matplotlibrc_orig
>
> then edit matplotlibrc. Just rename matplotlibrc_orig back to
> matplotlibrc when you're done.
>
> --
> Damon McDougall
> http://www.damon.is-a-geek.com
> B2.39
> Mathematics Institute
> University of Warwick
> Coventry
> West Midlands
> CV4 7AL
> United Kingdom
>
-- 
***********************************************************************************
Chao YUE
Laboratoire des Sciences du Climat et de l'Environnement (LSCE-IPSL)
UMR 1572 CEA-CNRS-UVSQ
Batiment 712 - Pe 119
91191 GIF Sur YVETTE Cedex
Tel: (33) 01 69 08 29 02; Fax:01.69.08.77.16
************************************************************************************

Hi,
I am trying to create a multi-subplot animation with based loosely
on the animation example code, subplots.py, at
http://matplotlib.sourceforge.net/examples/animation/subplots.html
A simplified version of the full code is shown at this gist:
https://gist.github.com/3613113
I am having problems getting the code to function properly. If I run
it as is, the figure appears, but no animation is done. Apparently
the setup code is called, but the code to change the frames is not.
If I comment out the call to the setup code, the method to update
the frame is called once, and that is it.
I would appreciate any help and insights that you can provide.
Thank you very much.
-g

On 2012年09月03日 1:38 AM, Jakob Gager wrote:
> Recently, I switched from matplotlib 0.99 to 1.0.1 and unfortunately discovered
> that my text scaling script stopped working properly. The script scales the given text
> to fit into the current figure.
>
> A quick example of what I'm doing (works in 0.99, but not in 1.0.1 and 1.1.1rc):
> import matplotlib.pyplot as plt
> plt.ion()
> fig = plt.figure(1, (6,8), dpi=72)
> fig.add_axes([0,0,1,1])
> txt1 = plt.text(0.5,0.5,'foobar',horizontalalignment='center',verticalalignment='center')
> plt.draw()
> # compute width of figure in points and divide by txt1 bounding box width
> sf1 = 6*72./txt1.cached.items()[0][1][1][0][1][0]
> txt1.set_size(txt1.get_size()*sf1)
> plt.draw()
>
> The problem is related to the fact that starting from mpl 1.0.1, the txt1.cached dictionary contains
> information of all text objects present rather than only of the specific object.
> I guess this behavior is intended, however this way it is rather complicated to derive the bounding
> box of the specific text object without cycling over the whole dictionary.
It looks like you can either use the _get_layout() method (which 
requires that you specify the renderer), or, if you know the text object 
will be among the last 50 for which _get_layout() has been called, you 
can use txt1.cached[txt1.get_prop_typ()].
>
> Is there a different way to achieve a fitted text object?
Not that I know of; but someone else may have a suggestion.
Eric
>
> Thanks,
> br Jakob
>
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On Mon, Sep 3, 2012 at 6:08 PM, Chao YUE <cha...@gm...> wrote:
> Yet if I don't want to change the rc file, I guess I must change in the
> modules where matplotlib has been imported for the first time?
If you're changing the rc file in your home directory:
~/.matplotlib/matplotlibrc
then just make a copy before you change it:
cd ~/.matplotlib
cp matplotlibrc matplotlibrc_orig
then edit matplotlibrc. Just rename matplotlibrc_orig back to
matplotlibrc when you're done.
-- 
Damon McDougall
http://www.damon.is-a-geek.com
B2.39
Mathematics Institute
University of Warwick
Coventry
West Midlands
CV4 7AL
United Kingdom

Hi Ben,
I changed the backend in matplotlibrc file. It works fine. Yet if I don't
want to change the rc file, I guess I must change in the modules where
matplotlib has been imported for the first time?
cheers,
Chao
On Mon, Sep 3, 2012 at 3:30 PM, Benjamin Root <ben...@ou...> wrote:
>
>
> On Monday, September 3, 2012, Chao YUE wrote:
>
>> Dear all,
>>
>> I have a module written by myself which use
>> python-netcdf/matplotlib/numpy/basemap for treating and mapping of netcdf
>> files.
>> so in the module I have a line:
>>
>> import matplotlib.pyplot as plt
>>
>> But now I am using some function of this module which do not involve the
>> visualisation. And I want to use it in a batch mode submitted by qsub
>> command.
>> And then I have traceback like following:
>>
>> File "/home/orchidee01/ychao/SCRIPT/combine.py", line 1, in <module>
>> import gnc
>> File "/home/users/ychao/python/python_lib/gnc.py", line 4, in <module>
>> import matplotlib.pyplot as plt
>> File
>> "/usr/local/install/matplotlib-1.1.0/lib64/python2.6/site-packages/matplotlib/pyplot.py",
>> line 95, in <module>
>> new_figure_manager, draw_if_interactive, _show = pylab_setup()
>> File
>> "/usr/local/install/matplotlib-1.1.0/lib64/python2.6/site-packages/matplotlib/backends/__init__.py",
>> line 25, in pylab_setup
>> globals(),locals(),[backend_name])
>> File
>> "/usr/local/install/matplotlib-1.1.0/lib64/python2.6/site-packages/matplotlib/backends/backend_gtkagg.py",
>> line 10, in <module>
>> from matplotlib.backends.backend_gtk import gtk, FigureManagerGTK,
>> FigureCanvasGTK,\
>> File
>> "/usr/local/install/matplotlib-1.1.0/lib64/python2.6/site-packages/matplotlib/backends/backend_gtk.py",
>> line 8, in <module>
>> import gtk; gdk = gtk.gdk
>> File "/usr/lib64/python2.6/site-packages/gtk-2.0/gtk/__init__.py", line
>> 64, in <module>
>> _init()
>> File "/usr/lib64/python2.6/site-packages/gtk-2.0/gtk/__init__.py", line
>> 52, in _init
>> _gtk.init_check()
>> RuntimeError: could not open display
>>
>> From the last line, I think this is because I cannot use this module in a
>> non-interactive mode. So is there a way I can bypass this issue and still
>> use the module in a non-interactive mode? Thanks a lot for any
>> information.
>>
>> Chao
>>
>>
> import matplotlib
> matplotlib.use("AGG")
>
> Or set that in the matplotlibrc file.
>
> Cheers,
> Ben Root
>
-- 
***********************************************************************************
Chao YUE
Laboratoire des Sciences du Climat et de l'Environnement (LSCE-IPSL)
UMR 1572 CEA-CNRS-UVSQ
Batiment 712 - Pe 119
91191 GIF Sur YVETTE Cedex
Tel: (33) 01 69 08 29 02; Fax:01.69.08.77.16
************************************************************************************

On 8/29/2012 10:32 PM, Fernando Perez wrote:
> http://numfocus.org/johnhunter
My thanks to NumFOCUS for setting up this
memorial fund so that Matplotlib users
can say thank you to John.
Alan Isaac

On Monday, September 3, 2012, Chao YUE wrote:
> Dear all,
>
> I have a module written by myself which use
> python-netcdf/matplotlib/numpy/basemap for treating and mapping of netcdf
> files.
> so in the module I have a line:
>
> import matplotlib.pyplot as plt
>
> But now I am using some function of this module which do not involve the
> visualisation. And I want to use it in a batch mode submitted by qsub
> command.
> And then I have traceback like following:
>
> File "/home/orchidee01/ychao/SCRIPT/combine.py", line 1, in <module>
> import gnc
> File "/home/users/ychao/python/python_lib/gnc.py", line 4, in <module>
> import matplotlib.pyplot as plt
> File
> "/usr/local/install/matplotlib-1.1.0/lib64/python2.6/site-packages/matplotlib/pyplot.py",
> line 95, in <module>
> new_figure_manager, draw_if_interactive, _show = pylab_setup()
> File
> "/usr/local/install/matplotlib-1.1.0/lib64/python2.6/site-packages/matplotlib/backends/__init__.py",
> line 25, in pylab_setup
> globals(),locals(),[backend_name])
> File
> "/usr/local/install/matplotlib-1.1.0/lib64/python2.6/site-packages/matplotlib/backends/backend_gtkagg.py",
> line 10, in <module>
> from matplotlib.backends.backend_gtk import gtk, FigureManagerGTK,
> FigureCanvasGTK,\
> File
> "/usr/local/install/matplotlib-1.1.0/lib64/python2.6/site-packages/matplotlib/backends/backend_gtk.py",
> line 8, in <module>
> import gtk; gdk = gtk.gdk
> File "/usr/lib64/python2.6/site-packages/gtk-2.0/gtk/__init__.py", line
> 64, in <module>
> _init()
> File "/usr/lib64/python2.6/site-packages/gtk-2.0/gtk/__init__.py", line
> 52, in _init
> _gtk.init_check()
> RuntimeError: could not open display
>
> From the last line, I think this is because I cannot use this module in a
> non-interactive mode. So is there a way I can bypass this issue and still
> use the module in a non-interactive mode? Thanks a lot for any
> information.
>
> Chao
>
>
import matplotlib
matplotlib.use("AGG")
Or set that in the matplotlibrc file.
Cheers,
Ben Root

Dear all,
I have a module written by myself which use
python-netcdf/matplotlib/numpy/basemap for treating and mapping of netcdf
files.
so in the module I have a line:
import matplotlib.pyplot as plt
But now I am using some function of this module which do not involve the
visualisation. And I want to use it in a batch mode submitted by qsub
command.
And then I have traceback like following:
 File "/home/orchidee01/ychao/SCRIPT/combine.py", line 1, in <module>
 import gnc
 File "/home/users/ychao/python/python_lib/gnc.py", line 4, in <module>
 import matplotlib.pyplot as plt
 File
"/usr/local/install/matplotlib-1.1.0/lib64/python2.6/site-packages/matplotlib/pyplot.py",
line 95, in <module>
 new_figure_manager, draw_if_interactive, _show = pylab_setup()
 File
"/usr/local/install/matplotlib-1.1.0/lib64/python2.6/site-packages/matplotlib/backends/__init__.py",
line 25, in pylab_setup
 globals(),locals(),[backend_name])
 File
"/usr/local/install/matplotlib-1.1.0/lib64/python2.6/site-packages/matplotlib/backends/backend_gtkagg.py",
line 10, in <module>
 from matplotlib.backends.backend_gtk import gtk, FigureManagerGTK,
FigureCanvasGTK,\
 File
"/usr/local/install/matplotlib-1.1.0/lib64/python2.6/site-packages/matplotlib/backends/backend_gtk.py",
line 8, in <module>
 import gtk; gdk = gtk.gdk
 File "/usr/lib64/python2.6/site-packages/gtk-2.0/gtk/__init__.py", line
64, in <module>
 _init()
 File "/usr/lib64/python2.6/site-packages/gtk-2.0/gtk/__init__.py", line
52, in _init
 _gtk.init_check()
RuntimeError: could not open display
>From the last line, I think this is because I cannot use this module in a
non-interactive mode. So is there a way I can bypass this issue and still
use the module in a non-interactive mode? Thanks a lot for any information.
Chao
-- 
***********************************************************************************
Chao YUE
Laboratoire des Sciences du Climat et de l'Environnement (LSCE-IPSL)
UMR 1572 CEA-CNRS-UVSQ
Batiment 712 - Pe 119
91191 GIF Sur YVETTE Cedex
Tel: (33) 01 69 08 29 02; Fax:01.69.08.77.16
************************************************************************************

Recently, I switched from matplotlib 0.99 to 1.0.1 and unfortunately discovered
that my text scaling script stopped working properly. The script scales the given text
to fit into the current figure.
A quick example of what I'm doing (works in 0.99, but not in 1.0.1 and 1.1.1rc):
import matplotlib.pyplot as plt
plt.ion()
fig = plt.figure(1, (6,8), dpi=72)
fig.add_axes([0,0,1,1])
txt1 = plt.text(0.5,0.5,'foobar',horizontalalignment='center',verticalalignment='center')
plt.draw()
# compute width of figure in points and divide by txt1 bounding box width
sf1 = 6*72./txt1.cached.items()[0][1][1][0][1][0]
txt1.set_size(txt1.get_size()*sf1)
plt.draw()
The problem is related to the fact that starting from mpl 1.0.1, the txt1.cached dictionary contains 
information of all text objects present rather than only of the specific object.
I guess this behavior is intended, however this way it is rather complicated to derive the bounding
box of the specific text object without cycling over the whole dictionary.
Is there a different way to achieve a fitted text object?
Thanks,
br Jakob