matplotlib-users Mailing List for matplotlib

Hey guys, I'm trying to use tight_layout() to fix up some subplot
grossness, but whenever I call it, I get:

Traceback (most recent call last):
  File "test.py", line 16, in <module>
    plt.tight_layout()
  File
"/Users/<username>/.homebrew/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/pyplot.py",
line 1056, in tight_layout
    fig.tight_layout(pad=pad, h_pad=h_pad, w_pad=w_pad)
  File "/Users/<username>/.homebrew/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/figure.py",
line 1415, in tight_layout
    pad=pad, h_pad=h_pad, w_pad=w_pad)
  File "/Users/<username>/.homebrew/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/tight_layout.py",
line 117, in auto_adjust_subplotpars
    tight_bbox_raw = union([ax.get_tightbbox(renderer) for ax in subplots])
  File "/Users/<username>/.homebrew/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/axes.py",
line 8396, in get_tightbbox
    bb.append(self.title.get_window_extent(renderer))
  File "/Users/<username>/.homebrew/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/text.py",
line 743, in get_window_extent
    bbox, info = self._get_layout(self._renderer)
  File "/Users/<username>/.homebrew/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/text.py",
line 296, in _get_layout
    ismath=False)
  File "/Users/<username>/.homebrew/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/backends/backend_macosx.py",
line 164, in get_text_width_height_descent
    width, height, descent =
self.gc.get_text_width_height_descent(unicode(s), family, size, weight,
style)
RuntimeError: CGContextRef is NULL

I've googled around, but no answers have been found.  Is this a known
issue, and if it's not, how can I go about fixing it?
Thanks,
-E

Hello,

I find this problem on matplotlib version 1.0.1

Tanim Islam

On Tue, 1 May 2012, Benjamin Root wrote:

> 
> 
> On Mon, Apr 30, 2012 at 4:02 PM, Tanim Islam <tan...@gm...> wrote:
>       Yes, sorry about that. I hope this now works.
>
>       Tanim Islam
> 
> 
> I can confirm your results.  I am looking into it.  What version of
> matplotlib are you using?
> 
> Ben Root
> 
> 
>

Can you provide a list of all of the packages that "apt-get build-dep 
python-matplotlib" installs?  I think there's more required than what 
you listed.  For example, it installs a C++ compiler, which is 
required.  We can't assume the user has anything already, which is why 
build-dep is so convenient.

Mike

On 05/01/2012 11:21 AM, Alexis Praga wrote:
> Hi,
>
> The documention on building matplotlib from source (
> http://matplotlib.sourceforge.net/users/installing.html )
> says the following :
>
> "If you are on debian/ubuntu, you can get all the dependencies
> required to build matplotlib with:
> sudo apt-get build-dep python-matplotlib"
>
> However, doing so will force use to install over 800Mo of useless packages.
> The dependencies mentioned after that (pytvhon,numpy, libpng,
> freetype) are sufficient for building from source.
> Could you edit that ?
>
>
> Thanks
>
> --
> Alexis Praga
>
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Actually, you will still need "python-dev" for compiling.

Sorry.

On Tue, May 1, 2012 at 5:21 PM, Alexis Praga <ale...@fr...> wrote:
> Hi,
>
> The documention on building matplotlib from source (
> http://matplotlib.sourceforge.net/users/installing.html )
> says the following :
>
> "If you are on debian/ubuntu, you can get all the dependencies
> required to build matplotlib with:
> sudo apt-get build-dep python-matplotlib"
>
> However, doing so will force use to install over 800Mo of useless packages.
> The dependencies mentioned after that (pytvhon,numpy, libpng,
> freetype) are sufficient for building from source.
> Could you edit that ?
>
>
> Thanks
>
> --
> Alexis Praga

Hi,

The documention on building matplotlib from source (
http://matplotlib.sourceforge.net/users/installing.html )
says the following :

"If you are on debian/ubuntu, you can get all the dependencies
required to build matplotlib with:
sudo apt-get build-dep python-matplotlib"

However, doing so will force use to install over 800Mo of useless packages.
The dependencies mentioned after that (pytvhon,numpy, libpng,
freetype) are sufficient for building from source.
Could you edit that ?


Thanks

--
Alexis Praga

On Mon, Apr 30, 2012 at 4:02 PM, Tanim Islam <tan...@gm...> wrote:

> Yes, sorry about that. I hope this now works.
>
> Tanim Islam
>
>
I can confirm your results.  I am looking into it.  What version of
matplotlib are you using?

Ben Root

On Tue, May 1, 2012 at 6:42 AM, David Erickson <der...@st...>wrote:

> Hi I need to use the symlog yscale in my graph, I have a lot of data
> that needs to be displayed linearly, with a small fraction at the upper
> end of the range that needs to be displayed in log scale due to its
> distance from the main data.  The symlog scale works great, however I'd
> like to adjust the actual vertical graph position where it crosses from
> linear to log (not the threshold), because right now only ~25% of the y
> space is being given to linear, and I'd like it to be more like 80%.  Is
> this possible?
>
> Thanks!
> David
>
>
Isn't linthreshy what you are looking for?  It denotes the range where the
scale is linear.  So, if it is 25, then from -25 to 25 the scale will be
linear.  After 25, it will be log.

Maybe I am missing something in your description?

Cheers!
Ben Root

Hi I need to use the symlog yscale in my graph, I have a lot of data 
that needs to be displayed linearly, with a small fraction at the upper 
end of the range that needs to be displayed in log scale due to its 
distance from the main data.  The symlog scale works great, however I'd 
like to adjust the actual vertical graph position where it crosses from 
linear to log (not the threshold), because right now only ~25% of the y 
space is being given to linear, and I'd like it to be more like 80%.  Is 
this possible?

Thanks!
David