matplotlib-users Mailing List for matplotlib

2010/8/18 Michael Droettboom <md...@st...>:
> This bug (that the r-axis labels are in the wrong place) should now be fixed
> in r8651.  This doesn't, unfortunately, address the original question about
> annular plots.

Is the attached issue with a plain polar axes already fixed?  I never
encountered this before.  344 degrees happens to be 6.0 rad.  I'm on
svn 8626.

On Wed, Aug 18, 2010 at 3:32 PM, Friedrich Romstedt
<fri...@gm...> wrote:
> 2010/8/14 Rob Schneider <rm...@rm...>:
>>> Agreed. The only thing I can think of is that the second figure is
>>> reusing the first. You can try calling plt.figure() at the beginning
>>> of the functions to create a new figure, or call plt.figure() in
>>> between the calls to CreateMemberStatCategoryFigure() and
>>> CreateMemberStatFigure(). I can't be sure since you didn't include the
>>> code that actually calls these functions.
>
> Still, there shouldn't be artists rendered outside of the axes.  I
> often replot things and do not create a new figure.  I believe there
> is something under the hood!  It *should* be unnecessary to create a
> new fig, although it surely fixes the thing, and is an easy enough
> fix.

One bar chart was categorical, the other based on dates. That threw
the axes scaling completely off. There weren't any misdrawn artists,
unless you're referring to the jumble of text. These are actually
tightly packed ticklabels for x-axis. Since the scaling is fubar-ed,
it looks messed up.

Not sure what could be reasonably expected in such a case.

Ryan

-- 
Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma

2010/8/17 Paul Anton Letnes <pau...@gm...>:
> If I try to use LaTeX for text processing (i.e. text.usetex : True in my matplotlibrc), I get a cryptic LaTeX error which didn't use to be there before. I get the same problem when using matplotlib-0.98.5 which I compiled from source, and matplotlib-1.0.0 from macports. My python version is 2.6.5 (from macports) and I am running Mac OS X 10.6.4.
>
> The error messages are pretty much the same no matter what I plot, and everything works fine if text.usetex : False.

Can't reproduce the error here on Mac OS X 10.6.4 64bit with
framework-compiled Python 2.6.5 and matplotlib from svn.  I could
imaging you are missing file creation rights or similar in the
directory where matplotlib wants to place that foobar123345.tex file.

Friedrich

2010/8/16 Craig Lyndon <c.a...@gm...>:
> If data sets are indeed stored in RAM, is there a way to discard the
> plot data after a plot had been created to leave just a static image?
> Or, read and store data points directly from a file?

You can render to PIL using the Agg backend, and display this via
PIL.ImageTk in Tkinter if you're using Tkinter.

Just an option ... I think this is quite straightforward.

Friedrich

2010/8/14 Eric Firing <ef...@ha...>:
> colors = [colorConverter.to_rgba(c, a) for c, a in zip(['g', 'r', 'b'],

If it is this (I didn't dig into the program) it will be fixed soon I hope :-)

Friedrich

2010/8/14 Rob Schneider <rm...@rm...>:
>> Agreed. The only thing I can think of is that the second figure is
>> reusing the first. You can try calling plt.figure() at the beginning
>> of the functions to create a new figure, or call plt.figure() in
>> between the calls to CreateMemberStatCategoryFigure() and
>> CreateMemberStatFigure(). I can't be sure since you didn't include the
>> code that actually calls these functions.

Still, there shouldn't be artists rendered outside of the axes.  I
often replot things and do not create a new figure.  I believe there
is something under the hood!  It *should* be unnecessary to create a
new fig, although it surely fixes the thing, and is an easy enough
fix.

> Thanks.  Indeed I did provide the code that actually calls these functions and the functions show all plotting-related lines.  Yes, I did not provide the single line call that calls the function that calls the two plotting functions, nor did I provide the call which starts the Python program. And I did not provide runnable code. Everyone's attention was on what code I did or did not provide. It was all there.  Naively I thought by code inspection by experts who read this mailing list they could quickly spot my flaw.

You know, we are all volunteering our time here on the list to help,
and I think blaming us to not be able to read hundred lines of code is
not productive at all.  It's not our side of the task to track whole
parts of programs down.  And, usually one has to play with the code
and to run it to see if it fixes the problem!

You can help improving matplotlib by providing the things the core
developers or experienced Python users like me need to track the error
down inside of matplotlib.

Friedrich

P.S.: Try to not think in experts and customers terms.

On 08/18/2010 09:51 AM, Benjamin Root wrote:
>
>
> On Wed, Aug 18, 2010 at 8:03 AM, Nils Wagner 
> <nw...@ia... <mailto:nw...@ia...>> 
> wrote:
>
>     Hi all,
>
>     Is it possible to create a polar plot, where the lower
>     bound of the radius is larger than zero ?
>     I would like to plot an annulus.
>
>     Any pointer would be appreciated.
>
>     Thanks in advance
>
>                                                 Nils
>
>
> Nils,
>
> It appears that there is a .set_rmin() function, however, I don't 
> think it does what we expect it to.  I can't get an annulus, but it 
> only plots the parts that are r >= r_min (but r_min is at the origin, 
> and the axis labels are in the wrong places...)
>
> Ben Root

This bug (that the r-axis labels are in the wrong place) should now be 
fixed in r8651.  This doesn't, unfortunately, address the original 
question about annular plots.

Mike

-- 
Michael Droettboom
Science Software Branch
Space Telescope Science Institute
Baltimore, Maryland, USA

On Wed, 18 Aug 2010 08:51:31 -0500
  Benjamin Root <ben...@ou...> wrote:
> On Wed, Aug 18, 2010 at 8:03 AM, Nils Wagner
> <nw...@ia...>wrote:
> 
>> Hi all,
>>
>> Is it possible to create a polar plot, where the lower
>> bound of the radius is larger than zero ?
>> I would like to plot an annulus.
>>
>> Any pointer would be appreciated.
>>
>> Thanks in advance
>>
>>                                             Nils
>>
>>
> Nils,
> 
> It appears that there is a .set_rmin() function, 
>however, I don't think it
> does what we expect it to.  I can't get an annulus, but 
>it only plots the
> parts that are r >= r_min (but r_min is at the origin, 
>and the axis labels
> are in the wrong places...)
> 
> Ben Root

Ben,

Thank you for your reply.
Please can you send me your example.

Nils
  

On Wed, Aug 18, 2010 at 8:03 AM, Nils Wagner
<nw...@ia...>wrote:

> Hi all,
>
> Is it possible to create a polar plot, where the lower
> bound of the radius is larger than zero ?
> I would like to plot an annulus.
>
> Any pointer would be appreciated.
>
> Thanks in advance
>
>                                             Nils
>
>
Nils,

It appears that there is a .set_rmin() function, however, I don't think it
does what we expect it to.  I can't get an annulus, but it only plots the
parts that are r >= r_min (but r_min is at the origin, and the axis labels
are in the wrong places...)

Ben Root

On Wed, Aug 18, 2010 at 3:53 AM, Michal Lorenc <m.l...@uq...> wrote:

> Hello,
> I have Python in my home directory installed and when I tried to install
> matplotlib in the following way:
> xyz@wp: ~/temp/matplotlib-1.0.0 $which python
> ~/programs/python/bin/python
> xyz@wp: ~/temp/matplotlib-1.0.0 $python setup.py build
> basedirlist is: ['/usr/local', '/usr']
>
> ============================================================================
> BUILDING MATPLOTLIB
>            matplotlib: 1.0.0
>                python: 2.6.4 (r264:75706, Jan 28 2010, 14:19:59)  [GCC
>                        4.1.2 20071124 (Red Hat 4.1.2-42)]
>              platform: linux2
>
> REQUIRED DEPENDENCIES
>
>
> the installation stopped at "REQUIRED DEPENDENCIES".
>
> What did I wrong?
>
> Thank you in advance.
>
>
Did it stop?  Or did the build just hang there?  Also, do you have the other
build dependencies installed for matplotlib?
http://matplotlib.sourceforge.net/users/installing.html#build-requirements

Ben Root

Hi all,

Is it possible to create a polar plot, where the lower 
bound of the radius is larger than zero ?
I would like to plot an annulus.

Any pointer would be appreciated.

Thanks in advance

                                             Nils

Hello,
I have Python in my home directory installed and when I tried to install
matplotlib in the following way:
xyz@wp: ~/temp/matplotlib-1.0.0 $which python
~/programs/python/bin/python
xyz@wp: ~/temp/matplotlib-1.0.0 $python setup.py build
basedirlist is: ['/usr/local', '/usr']
============================================================================
BUILDING MATPLOTLIB
            matplotlib: 1.0.0
                python: 2.6.4 (r264:75706, Jan 28 2010, 14:19:59)  [GCC
                        4.1.2 20071124 (Red Hat 4.1.2-42)]
              platform: linux2

REQUIRED DEPENDENCIES


the installation stopped at "REQUIRED DEPENDENCIES".

What did I wrong?

Thank you in advance.