matplotlib-users Mailing List for matplotlib

You should be able to use
http://leejjoon.github.com/mpl_toolkits-gridspec/
for unequal-size plots of the type you describe.

Alan Isaac

On Mon, Jun 21, 2010 at 2:33 PM, Jeffrey Blackburne <je...@mi...> wrote:
> I have used add_axes() to do this in the past. E.g.,
>
> import matplotlib.pyplot as plt
>
> fig = plt.figure()
> leftmarg = 0.125   # change these numbers to taste
> botmmarg = 0.125
> width = 0.825
> height = 0.825
> frac = 2./3.
> ax0 = fig.add_axes([leftmarg, botmmarg, width, frac*height])
> ax1 = fig.add_axes([leftmarg, botmmarg+frac*height, width, (1-frac)*height])
> ax1.xaxis.set_ticklabels([])
> plt.show()
>
> Sorry it is in object-oriented style instead of pylab style...
>

Thanks!  This looks like it might work.  I'll give it a try.
Jeremy

I have used add_axes() to do this in the past. E.g.,

import matplotlib.pyplot as plt

fig = plt.figure()
leftmarg = 0.125   # change these numbers to taste
botmmarg = 0.125
width = 0.825
height = 0.825
frac = 2./3.
ax0 = fig.add_axes([leftmarg, botmmarg, width, frac*height])
ax1 = fig.add_axes([leftmarg, botmmarg+frac*height, width, (1-frac) 
*height])
ax1.xaxis.set_ticklabels([])
plt.show()

Sorry it is in object-oriented style instead of pylab style...


On Jun 21, 2010, at 3:13 PM, Jeremy Conlin wrote:

> I have followed this excellent example:
> http://matplotlib.sourceforge.net/examples/pylab_examples/ 
> ganged_plots.html
>
> but I would like my plots to be 2/3 and 1/3 of the total height of the
> figure (I only have 2 plots).  What do I have to do to specify the
> relative sizes of the figures?
>
> Thanks,
> Jeremy
>
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Jeremy Conlin <jlc...@gm...>
> I have followed this excellent example:
> http://matplotlib.sourceforge.net/examples/pylab_examples/ganged_plots.html
> 
> but I would like my plots to be 2/3 and 1/3 of the total height of the
> figure (I only have 2 plots).  What do I have to do to specify the
> relative sizes of the figures?

may something like

ax1 = fig.add_subplot(311)
ax2 = fig.add_subplot(212)

work?

if I look at pyplot.setp(ax1) I see a lot of things (like "position" or 
"anchor" or "axes_locator") which might work.

Good luck,

Malte

I have followed this excellent example:
http://matplotlib.sourceforge.net/examples/pylab_examples/ganged_plots.html

but I would like my plots to be 2/3 and 1/3 of the total height of the
figure (I only have 2 plots).  What do I have to do to specify the
relative sizes of the figures?

Thanks,
Jeremy

This doesn't solve the original problem and I know I worked out a way to do
it before my hard disk messed up! But it seems you can get a version going
through macports...

sudo port install py26-matplotlib
sudo port install python_select
sudo python_select python26

then edit your .matplotlib/matplotlibrc file (make one if you don't have
it). And put backend: macosx into it.

Should work fine. Does for me. Now I don't know how one would set python up
so it doesn't find my other version, other than moving paths around. Or
setting it up so easy_install using the /opt/ version of python. Anyone?

thanks

Martin
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On 06/21/2010 06:10 AM, Matthias Michler wrote:
> Hello list,
>
> I'm encountering a strange problem with the RectangleSelector using the latest
> version of svn. Namely it doesn't work if it wasn't initialized as
> RS = RectangleSelector(...)
> but using
> RectangleSelector(...)
> in my script.
>
> I modified the example rectangle_selector.py from the folder examples/widgets
> to illustrate my observation.
>
> Can anybody reproduce my findings or even explain what is going on?

If you don't keep a reference to the RectangleSelector object, it 
vanishes--it is garbage-collected.

Eric

>
> Thanks in advance for any comments.
>
> Kind regards,
> Matthias

> Which 2.6?

Any would be better than none, but I have 2.6.5 (the most recent) from 
python.org.

>  think that needs the 2.6 from Python.org -- I'd try that if it's not
> what you're using already -- if you are, then what errors, etc do you get?

That's not the problem, as that's the version of Python I have.  The 
problem is that the installer doesn't recognize that Python is installed 
and hence won't let matplotlib be installed at all.
-- 

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Research Assistant
Department of Physics and Astronomy
University of Maine
Bennett 309
Office Hours: By Appointment Only

> Do you have some notes on how you achieved this?  It is more than I've
> been able to do.

Yes I firstly setup a brand new python, i.e. not the one that ships with
snow leopard (ver2.6.5). Then followed everything on
http://blog.hyperjeff.net/?p=160



>I'm not a build or gcc expert, but am interested in the solution to this
>-- I have also tried (without success) to get this compiled on OS X
>10.6.  A few potentially useful pointers:

>1. Check that you have the latest version of XCode.

yep

> 2. Check that you have a recent version of gfortran.

yep

>3. Check your path to various tools:
> http://mail.scipy.org/pipermail/numpy-discussion/2007-January/025669.html

yep.


I came across this which seems to be the ticket, though this also doesn't
work...

http://www.trondkristiansen.com/?page_id=79

when I follow it through it builds but I get a seg fault when I run it. I
payed more attention to the build and I think the issue stems from the arch
flags...

eg.

[HAL-9000@matplotlib-0.99.3]$ make -f make.osx mpl_build
blah, blah
ld: warning: in /usr/local/lib/libstdc++.dylib, file was built for
unsupported file format which is not the architecture being linked (i386)

thanks

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On 6/21/10 7:41 AM, mdekauwe wrote:
> So I have successfully built a 64bit version of Numpy, Scipy from svn and am
> using python version 2.6.5. However in trying to follow the instructions o

Do you have some notes on how you achieved this?  It is more than I've
been able to do.

> I had a look at the config.log file in the libpng directory and the main
> thing I can see is...
>
> configure:3266: checking for C compiler default output file name
> configure:3288: gcc -arch i386 -arch x86_64 -I/usr/local/include
> -I/usr/local/include/freetype2 -isysroot /Developer/SDKs/MacOSX10.6.sdk 
> -arch i386 -arch x86_64 -L/usr/local/lib
> -syslibroot,/Developer/SDKs/MacOSX10.6.sdk conftest.c  >&5
> gcc: unrecognized option '-syslibroot,/Developer/SDKs/MacOSX10.6.sdk'
> cc1: error: unrecognized command line option "-arch"
> cc1: error: unrecognized command line option "-arch"
> cc1: error: unrecognized command line option "-arch"
> cc1: error: unrecognized command line option "-arch"
>   

I'm not a build or gcc expert, but am interested in the solution to this
-- I have also tried (without success) to get this compiled on OS X
10.6.  A few potentially useful pointers:

1. Check that you have the latest version of XCode.

2. Check that you have a recent version of gfortran.

3. Check your path to various tools:

http://mail.scipy.org/pipermail/numpy-discussion/2007-January/025669.html

Ian

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ijs...@hk...               T: +1 617 432-5608 x75
NEBioGrid, Harvard Medical School          C: +1 617 331-5993

Hi,

So I have successfully built a 64bit version of Numpy, Scipy from svn and am
using python version 2.6.5. However in trying to follow the instructions on
this blog (http://blog.hyperjeff.net/?p=160), namely...

changing the make.osx file to

MACOSX_DEPLOYMENT_TARGET=10.6

PREFIX=/usr/local

## You shouldn't need to configure past this point (and yet…)

PKG_CONFIG_PATH="${PREFIX}/lib/pkgconfig"
CFLAGS="-arch i386 -arch x86_64 -I${PREFIX}/include
-I${PREFIX}/include/freetype2 -isysroot /Developer/SDKs/MacOSX10.6.sdk"
LDFLAGS="-arch i386 -arch x86_64 -L${PREFIX}/lib
-syslibroot,/Developer/SDKs/MacOSX10.6.sdk"
FFLAGS="-arch i386 -arch x86_64"

and uncommenting wxagg = False from the setup.cfg 

I still seem to run into trouble. 

Command I am running is sudo make -f make.osx fetch deps mpl_build
mpl_install

which runs into trouble to do with the libpng lib...

x libpng-1.2.39/scripts/makefile.ne12bsd
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... ./install-sh -c -d
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether to enable maintainer-specific portions of Makefiles... no
checking for gcc... gcc
checking for C compiler default output file name... 
configure: error: in
`/Users/mdekauwe/src/packages/matplotlib_svn/libpng-1.2.39':
configure: error: C compiler cannot create executables
See `config.log' for more details.
make: *** [png] Error 77

I had a look at the config.log file in the libpng directory and the main
thing I can see is...

configure:3266: checking for C compiler default output file name
configure:3288: gcc -arch i386 -arch x86_64 -I/usr/local/include
-I/usr/local/include/freetype2 -isysroot /Developer/SDKs/MacOSX10.6.sdk 
-arch i386 -arch x86_64 -L/usr/local/lib
-syslibroot,/Developer/SDKs/MacOSX10.6.sdk conftest.c  >&5
gcc: unrecognized option '-syslibroot,/Developer/SDKs/MacOSX10.6.sdk'
cc1: error: unrecognized command line option "-arch"
cc1: error: unrecognized command line option "-arch"
cc1: error: unrecognized command line option "-arch"
cc1: error: unrecognized command line option "-arch"

Not sure what the issue with the arch flag is?

Would really appreciate some thoughts on this, many thanks

Martin
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Hi Matthias,
Thanks for the script! Now I would like to try to understand why it
works :) . In both of the scripts you sent me, plt.draw() is called
inside the loop to display each image file, and plt.show() is called
outside the loop at the end of the script. I guess what I find
confusing is, how is it that the images are displayed on screen,
inside the loop, *before* plt.show() is called? I would have expected
only the very last image inside the loop to be displayed, using this
program structure. So apparently there is something here I do not
understand...

-Daniel

On Tue, Jun 15, 2010 at 3:26 AM, Matthias Michler
<Mat...@gm...> wrote:
> On Monday, June 14, 2010 10:32:48 pm Daniel Jones wrote:
>> Hi matplotlib users,
>>
>> I'm trying to write a script to loop through a bunch of tiff files,
>> display each image, and choose to accept or reject each image.
>> Something like:
>>
>> for f in files:
>>    im = imread(f)
>>    imshow(im)
>>    # Accept keyboard input to accept or reject image
>>    # Close the image
>>
>>
>> The problem is that I can't figure out how to show multiple images in
>> series. I can't use matplotlib.pyplot.show() because that can only be
>> used once at the very end of a script, and I don't want to show all
>> the images at once. matplotlib.pyplot.draw() seemed like a promising
>> candidate, but it only seems to work if I've already used show() once
>> in the script. It seems like there should be a simple way to do this,
>> but I can't quite seem to find it.
>>
>> Thanks,
>> Daniel
>
> Hi Daniel,
>
> in the attached script I propose two solutions for your problem (just
> uncomment first region and comment second to test the first proposal). The first
> uses plt.waitforbuttonpress and the second key-press-events.
>
> Kind regards,
> Matthias
>
> ------------------------------------------------------------------------------
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