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On Tue, Jan 3, 2012 at 11:57 AM, Mario Fuest <mar...@ao...> wrote:

> Hi,
>
> Maybe a bad idea to ask a question on x-mas. Well, I hope it’s not that
> unpolite to push one‘s questions. :)
>
> Basically I just want to set a fixed width/height on my figure. That
> should be possible?
>
> Mario Fuest <mar...@ao...> schrieb am Sat, 24. Dec 16:42:
> > Hi there,
> >
> > I want to examine a vector field and therefore i used "quiver" to
> > visualize said field:
> >
> > > import numpy as np
> > > import matplotlib.pyplot as plt
> > >
> > > # points
> > > x, y = np.meshgrid(np.arange(0, 2*np.pi, 0.1),
> > >                    np.arange(0, 1*np.pi, 0.1))
> > > # derivatives
> > > dx = -2*np.sin(x)*np.cos(y)
> > > dy =    np.cos(x)*np.sin(y)
> > >
> > > # plot
> > > plt.figure()
> > > plt.quiver(dx, dy, color='b')
> > >
> > > # beautiful axis
> > > a = plt.gca()
> > > x_a, y_a = a.get_xaxis(), a.get_yaxis()
> > > a.axis('tight')
> > > # TODO: We should not multiply with 10 here.
> > > x_a.set_ticks(np.arange(0, 2*np.pi*10+1, np.pi*10/4))
> > > y_a.set_ticks(np.arange(0, 1*np.pi*10+1, np.pi*10/4))
> > > labels = [
> > >     r'$0$',
> > >     r'$\frac{1}{4}\pi$',
> > >     r'$\frac{1}{2}\pi$',
> > >     r'$\frac{3}{4}\pi$',
> > >     r'$\pi$',
> > >     r'$\frac{5}{4}\pi$',
> > >     r'$\frac{3}{2}\pi$',
> > >     r'$\frac{7}{4}\pi$',
> > >     r'$2 \pi$']
> > > a.set_xticklabels(labels)
> > > a.set_yticklabels(labels[:5])
> > >
> > > # show
> > > plt.show()
> >
> > (The plot looks like a double swirl, if anyone is interested in that
> > information)
> >
> > At first I do not know why I have to multiply with 10 at the ticks, but
> > thats not the point.
> >
> > It is much more important that I would like to set the image to a
> > certain width before saving. It should be both "tight" and "equal", so
> > after setting the width the height could be calculated automatically.
> >
> > As a workaround I use the images and strech them vertically, but then
> > the x/y axis tick labels look strange.
> >
> > So: How to set a certain width?
> >
> > Thanks and a merry Christmas,
> > Keba
>
>
You can try

>>> ax.set_aspect('equal')
>>> ax.autoscale(tight=True)

The order doesn't seem to matter.

-Tony

Hi,

Maybe a bad idea to ask a question on x-mas. Well, I hope it’s not that
unpolite to push one‘s questions. :)

Basically I just want to set a fixed width/height on my figure. That
should be possible?

Mario Fuest <mar...@ao...> schrieb am Sat, 24. Dec 16:42:
> Hi there,
> 
> I want to examine a vector field and therefore i used "quiver" to
> visualize said field:
> 
> > import numpy as np
> > import matplotlib.pyplot as plt
> > 
> > # points
> > x, y = np.meshgrid(np.arange(0, 2*np.pi, 0.1),
> >                    np.arange(0, 1*np.pi, 0.1))
> > # derivatives
> > dx = -2*np.sin(x)*np.cos(y)
> > dy =    np.cos(x)*np.sin(y)
> > 
> > # plot
> > plt.figure()
> > plt.quiver(dx, dy, color='b')
> > 
> > # beautiful axis
> > a = plt.gca()
> > x_a, y_a = a.get_xaxis(), a.get_yaxis()
> > a.axis('tight')
> > # TODO: We should not multiply with 10 here.
> > x_a.set_ticks(np.arange(0, 2*np.pi*10+1, np.pi*10/4))
> > y_a.set_ticks(np.arange(0, 1*np.pi*10+1, np.pi*10/4))
> > labels = [
> >     r'$0$',
> >     r'$\frac{1}{4}\pi$',
> >     r'$\frac{1}{2}\pi$',
> >     r'$\frac{3}{4}\pi$',
> >     r'$\pi$',
> >     r'$\frac{5}{4}\pi$',
> >     r'$\frac{3}{2}\pi$',
> >     r'$\frac{7}{4}\pi$',
> >     r'$2 \pi$']
> > a.set_xticklabels(labels)
> > a.set_yticklabels(labels[:5])
> > 
> > # show
> > plt.show()
> 
> (The plot looks like a double swirl, if anyone is interested in that
> information)
> 
> At first I do not know why I have to multiply with 10 at the ticks, but
> thats not the point.
> 
> It is much more important that I would like to set the image to a
> certain width before saving. It should be both "tight" and "equal", so
> after setting the width the height could be calculated automatically.
> 
> As a workaround I use the images and strech them vertically, but then
> the x/y axis tick labels look strange.
> 
> So: How to set a certain width?
> 
> Thanks and a merry Christmas,
> Keba
> 
> ------------------------------------------------------------------------------
> Write once. Port to many.
> Get the SDK and tools to simplify cross-platform app development. Create 
> new or port existing apps to sell to consumers worldwide. Explore the 
> Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
> http://p.sf.net/sfu/intel-appdev
> _______________________________________________
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> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

Paul, 

Have you tried using virtualenv with Python 2.7?  I'm in the same situation and I find using a virtual environment for different configuration schemes allows me to have the up-to-date Python modules without the Mac's "semi-legacy" Python version.  It's fairly simple to set up - if you're interested I can discuss the details with you.

Cheers,
Dave 

----
David Welch
dav...@gm...

Something you entered
transcended parameters.
So much is unknown.

-Salon Magazine, Error Haiku Challenge


On 29Dec, 2011, at 9:15 AM, Paul Beard wrote:

> This is turning out to be complicated. Is there any easier way? 
> 
> It may be something as simple as a damaged archive, as this doesn't look right: 
> 
> [/home/paul/src/basemap-1.0.2]:: find . -name setup.py
> (pa...@sh...)-(07:02 AM / Thu Dec 29)
> 
> It makes this step difficult: 
> 3) cd back to the top level basemap directory (basemap-X.Y.Z) and
> run the usual 'python setup.py install'.  Check your installation
> by running "from mpl_toolkits.basemap import Basemap" at the python
> prompt.
> 
> I have tried easy-install (it wasn't). I have tried pulling from git:
> python setup.py build
> Traceback (most recent call last):
>   File "setup.py", line 42, in <module>
>     from setupext import build_agg, build_gtkagg, build_tkagg,\
>   File "/usr/home/paul/src/matplotlib/setupext.py", line 184, in <module>
>     basedirlist = basedir[sys.platform]
> KeyError: 'freebsd8'
> 
> I tried the packaged version on OS X Lion: 
> 
> <Screen Shot 2011-12-29 at 6.59.57 AM.png>
> 
> Built for OS X 10.3? Really? 
> 
> I'm not installing fink or macports or homebrew: if it doesn't install from source without a duplicated file hierarchy I'm not interested.
> 
> Any hope here? 
> 
> --
> Paul Beard
> 
> Are you trying to win an argument or solve a problem? 
> 
> ------------------------------------------------------------------------------
> Write once. Port to many.
> Get the SDK and tools to simplify cross-platform app development. Create 
> new or port existing apps to sell to consumers worldwide. Explore the 
> Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
> http://p.sf.net/sfu/intel-appdev_______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

Hello,

So I'm having a problem when trying to integrate networkx with matplotlib 1.0.1. The problem is the same as the one in these posts:

http://stackoverflow.com/questions/8644233/networkx-and-matplotlib-axes-error

http://groups.google.com/group/networkx-discuss/tree/browse_frm/month/2010-08/e325429fcc342798?rnum=81&_done=/group/networkx-discuss/browse_frm/month/2010-08?

Now going back to 0.99 isn't really an option, and for 1.0.1 a quick and dirty fix for my problem was to add in axes.py, line 1354:
    
    def _sci(self, im):
        """
        helper for :func:`~matplotlib.pyplot.sci`;
        do not use elsewhere.
        """
        if isinstance(im, matplotlib.contour.ContourSet):
            if im.collections[0] not in self.collections:
                raise ValueError(
                    "ContourSet must be in current Axes")
        elif im not in self.images and im not in self.collections: # and not isinstance(im, matplotlib.collections.CircleCollection):
            raise ValueError(
            "Argument must be an image, collection, or ContourSet in this Axes")
        self._current_image = im

This however isn't really a fix  but a hack to get it working and I don't know how this could affect other parts of matplotlib. So I guess my questions are:

1. Is this issue fixed in some newer version than 1.0.1 and if so from which?
2. If not will this bug be handled in a future version?
3. If not to 1 and 2 is there any other 'cleaner' hack to fix this problem ?

Regards,
Bogdan

I just opened a pull request that implements the requested feature.

https://github.com/matplotlib/matplotlib/pull/655

If you're familiar with Git, please test it and see if it works for your need.
I believe I will merge this PR to the master branch in a few days
unless there is any objection.

Regards,

-JJ



On Tue, Dec 20, 2011 at 6:21 AM, Jonathan Slavin
<js...@cf...> wrote:
> Hi,
>
> It seems that patheffects are not supported for Line2D objects currently
> - only for Text and Patch objects.  Is there any fundamental reason they
> couldn't be extended to support Line2D objects?  I'm interested in this
> because I draw grid lines for some hammer projection plots and those
> lines are Line2D objects.  For certain images, it'd be nicer to have the
> grid lines use patheffects so that any color of the image would still
> allow the grid line to show clearly.
>
> Jon
> --
> ______________________________________________________________
> Jonathan D. Slavin              Harvard-Smithsonian CfA
> js...@cf...         60 Garden Street, MS 83
> phone: (617) 496-7981           Cambridge, MA 02138-1516
>  cell: (781) 363-0035           USA
> ______________________________________________________________
>
>
> ------------------------------------------------------------------------------
> Write once. Port to many.
> Get the SDK and tools to simplify cross-platform app development. Create
> new or port existing apps to sell to consumers worldwide. Explore the
> Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
> http://p.sf.net/sfu/intel-appdev
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users