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Showing results of 170

<< < 1 2 3 4 5 6 7 > >> (Page 4 of 7)
From: Benjamin R. <ben...@ou...> - 2013年01月22日 14:29:48
On Mon, Jan 21, 2013 at 8:06 PM, Pau <vim...@go...> wrote:
> Hi,
>
> I am somehow new to matplotlib and I am trying to plot this function of x
> ,y ,z
>
> F(x,y,z)=
> 38244.74787*Pi*(x^2+y^2+z^2)^.125+1615.975261*Pi*z^2/(x^2+y^2+z^2)^.875-1292.780210*Pi*z^2/((x^2+y^2+z^2)^.875*(1+y^2/x^2))+1292.78*Pi*(x^2+y^2+z^2)^.125/(1+y^2/x^2)
>
> in a similar way as
>
> http://matplotlib.org/mpl_examples/mplot3d/contour3d_demo3.hires.png
>
> The code is
> http://matplotlib.org/mpl_examples/mplot3d/contour3d_demo3.py
>
> But I have no idea where to start...
>
> some help would be appreciated...
>
> thanks
>
>
The reason you are having difficulty coming up with a way to plot this is
because you have 3 input dimensions, and 1 output dimension that you wish
to plot. If you were to plot this in 3D space, it would have to be done as
F(x,y,z) as a colored "mist" in the domain of (x,y,z). While a "mist"
can't be done in mplot3d, you could plot out scatter points to emulate
this. One could also use contourf3d(..., zdir='z', offset=...) to create
slices of the filled contours, similar to this example:
http://matplotlib.org/examples/mplot3d/contourf3d_demo2.html
Now, if the domain of (x,y,z) can be parameterized as a surface (i.e., a
sphere or a cylinder), then you are looking to do an image of F(x,y,z)
plotted on that surface, which is a little bit difficult, but also do-able
using the plot_surface() function.
Cheers!
Ben Root
From: Massimiliano C. <mas...@ms...> - 2013年01月22日 13:33:20
Hello everyone,
in my program I'm encountering an error when calling the function axes.set_xticks (Matplotlib 1.2.0 on python 2.7-64 bit). It is really difficult for me to build a test case, because my program is really complex. Here is the error traceback:
File "C:\Python27\Lib\site-packages\matplotlib\axes.py", line 2596, in set_xticks
 return self.xaxis.set_ticks(ticks, minor=minor)
File "C:\Python27\Lib\site-packages\matplotlib\axis.py", line 1489, in set_ticks
 self.set_view_interval(min(ticks), max(ticks))
File "C:\Python27\Lib\site-packages\matplotlib\axis.py", line 1771, in set_view_interval
 max(vmin, vmax, Vmax))
File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line 932, in _set_intervalx
 self.invalidate()
File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line 131, in invalidate
 return self._invalidate_internal(value, invalidating_node=self)
File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line 155, in _invalidate_internal
 invalidating_node=self)
File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line 155, in _invalidate_internal
 invalidating_node=self)
File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line 155, in _invalidate_internal
 invalidating_node=self)
File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line 2141, in _invalidate_internal
 invalidating_node=invalidating_node)
File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line 155, in _invalidate_internal
 invalidating_node=self)
File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line 2141, in _invalidate_internal
 invalidating_node=invalidating_node)
File "C:\Python27\Lib\site-packages\matplotlib\transforms.py", line 153, in _invalidate_internal
 for parent in self._parents.itervalues():
File "C:\Python27\Lib\weakref.py", line 147, in itervalues
 for wr in self.data.itervalues(): 
RuntimeError: dictionary changed size during iteration
I googled and found that this is a well known bug due to the use of self.data.itervalues() in the for loop (i think the correct syntax should be for wr in iter(self.data.items()). So I would like to point out the bug (if it is) to the matplotlib guys, how can I do it?
In the meantime, how can I work around it without changing the source code?
Thanks in advance!
 		 	 		 
From: <jos...@gm...> - 2013年01月22日 03:54:13
On Mon, Jan 21, 2013 at 10:12 PM, <jos...@gm...> wrote:
> On Mon, Jan 21, 2013 at 5:01 AM, cnorn <ch...@gm...> wrote:
>> Are there any way to make column scatter plots with matplotlib. They are also
>> called beeswarm plot. plotSpread is implemented in matlab, which seems to do
>> the job, but I can't find it in matplotlib.
>
>
> somewhat similar, with random jitter and violins
>
> http://statsmodels.sourceforge.net/devel/generated/statsmodels.graphics.boxplots.beanplot.html
> https://picasaweb.google.com/lh/photo/SF2eFYvMcgEknynXlSYEG9MTjNZETYmyPJy0liipFm0?feat=directlink
turning off some colors (full set of options are available):
https://picasaweb.google.com/lh/photo/41edXo0ZeO6qUreNeUvJmdMTjNZETYmyPJy0liipFm0?feat=directlink
>
> plotSpread looks like it might have a fancier point selection
If someone can come up with more regular "bees" like here
http://stackoverflow.com/questions/9777592/beeswarm-boxplot-scatterplot-for-categorical-data-in-matlab
then it would make a nice enhancement.
Josef
>
> Josef
>
>>
>> Thanks,
>> Chris
>>
>>
>>
>>
>> --
>> View this message in context: http://matplotlib.1069221.n5.nabble.com/How-to-make-column-scatter-plots-tp40276.html
>> Sent from the matplotlib - users mailing list archive at Nabble.com.
>>
>> ------------------------------------------------------------------------------
>> Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS,
>> MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current
>> with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft
>> MVPs and experts. SALE 99ドル.99 this month only -- learn more at:
>> http://p.sf.net/sfu/learnmore_122412
>> _______________________________________________
>> Matplotlib-users mailing list
>> Mat...@li...
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
From: <jos...@gm...> - 2013年01月22日 03:12:36
On Mon, Jan 21, 2013 at 5:01 AM, cnorn <ch...@gm...> wrote:
> Are there any way to make column scatter plots with matplotlib. They are also
> called beeswarm plot. plotSpread is implemented in matlab, which seems to do
> the job, but I can't find it in matplotlib.
somewhat similar, with random jitter and violins
http://statsmodels.sourceforge.net/devel/generated/statsmodels.graphics.boxplots.beanplot.html
https://picasaweb.google.com/lh/photo/SF2eFYvMcgEknynXlSYEG9MTjNZETYmyPJy0liipFm0?feat=directlink
plotSpread looks like it might have a fancier point selection
Josef
>
> Thanks,
> Chris
>
>
>
>
> --
> View this message in context: http://matplotlib.1069221.n5.nabble.com/How-to-make-column-scatter-plots-tp40276.html
> Sent from the matplotlib - users mailing list archive at Nabble.com.
>
> ------------------------------------------------------------------------------
> Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS,
> MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current
> with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft
> MVPs and experts. SALE 99ドル.99 this month only -- learn more at:
> http://p.sf.net/sfu/learnmore_122412
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
From: Pau <vim...@go...> - 2013年01月22日 02:11:07
Hi,
I am somehow new to matplotlib and I am trying to plot this function of x ,y ,z
F(x,y,z)= 38244.74787*Pi*(x^2+y^2+z^2)^.125+1615.975261*Pi*z^2/(x^2+y^2+z^2)^.875-1292.780210*Pi*z^2/((x^2+y^2+z^2)^.875*(1+y^2/x^2))+1292.78*Pi*(x^2+y^2+z^2)^.125/(1+y^2/x^2)
in a similar way as
http://matplotlib.org/mpl_examples/mplot3d/contour3d_demo3.hires.png
The code is
http://matplotlib.org/mpl_examples/mplot3d/contour3d_demo3.py
But I have no idea where to start...
some help would be appreciated...
thanks
From: Damon M. <dam...@gm...> - 2013年01月21日 18:42:30
On Mon, Jan 21, 2013 at 11:44 AM, Ryan May <rm...@gm...> wrote:
> Hi,
>
> Just ran across this article that shows a familiar looking graph. Just
> another encounter of matplotlib in daily life.
>
> http://www.wired.com/wiredenterprise/2013/01/google-password/2/
Here's another one, too:
http://www.wired.com/wiredscience/2013/01/why-are-lego-sets-expensive/
Maybe the next wired article will use the SVG backend :)
>
> Ryan
>
>
> --
> Ryan May
> Graduate Research Assistant
> School of Meteorology
> University of Oklahoma
>
> ------------------------------------------------------------------------------
> Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS,
> MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current
> with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft
> MVPs and experts. SALE 99ドル.99 this month only -- learn more at:
> http://p.sf.net/sfu/learnmore_122412
> _______________________________________________
> Matplotlib-devel mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
>
-- 
Damon McDougall
http://www.damon-is-a-geek.com
Institute for Computational Engineering Sciences
201 E. 24th St.
Stop C0200
The University of Texas at Austin
Austin, TX 78712-1229
From: Ryan M. <rm...@gm...> - 2013年01月21日 17:45:12
Hi,
Just ran across this article that shows a familiar looking graph. Just
another encounter of matplotlib in daily life.
http://www.wired.com/wiredenterprise/2013/01/google-password/2/
Ryan
-- 
Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma
From: Thomas S. <spr...@hd...> - 2013年01月21日 17:24:29
done!
https://github.com/matplotlib/matplotlib/issues/1692
cheers
Thomas
Am 21.01.2013 um 18:04 schrieb Benjamin Root:
> Hi folks!
> maybe you can point me in the right direction:
> 
> I have a list of colour measurements in Lab-Space(stored in an h5 table). Now, 3d-scatterplotting them was easy, also, assigning the corresponding rgb colour value to the spots is relatively easy.
> 
> For the plot i use:
> 
> p=ax.scatter3D(table.cols.Lab_a[:],table.cols.Lab_b[:],table.cols.Lab_L[:],c=cols)
> 
> Now, the annoying part: when i move around the figure with the mouse, the points in the background get "dimmed" or shaded down to less saturation. Now in my case, i want to turn this behaviour off, since i want the points to be the colour they represent, all the time.
> 
> How do i do this?
> 
> thanks for your help
> 
> Thomas
> 
> 
> 
> Unfortunately, there is no setting to turn this feature off. However, I don't see why it couldn't be done. It would be great if you could file a feature request on our github page.
> 
> Cheers!
> Ben Root
From: Benjamin R. <ben...@ou...> - 2013年01月21日 17:05:03
On Mon, Jan 21, 2013 at 7:42 AM, Thomas Sprinzing <
spr...@hd...> wrote:
> Hi folks!
> maybe you can point me in the right direction:
>
> I have a list of colour measurements in Lab-Space(stored in an h5 table).
> Now, 3d-scatterplotting them was easy, also, assigning the corresponding
> rgb colour value to the spots is relatively easy.
>
> For the plot i use:
>
>
> p=ax.scatter3D(table.cols.Lab_a[:],table.cols.Lab_b[:],table.cols.Lab_L[:],c=cols)
>
> Now, the annoying part: when i move around the figure with the mouse, the
> points in the background get "dimmed" or shaded down to less saturation.
> Now in my case, i want to turn this behaviour off, since i want the points
> to be the colour they represent, all the time.
>
> How do i do this?
>
> thanks for your help
>
> Thomas
>
>
>
Unfortunately, there is no setting to turn this feature off. However, I
don't see why it couldn't be done. It would be great if you could file a
feature request on our github page.
Cheers!
Ben Root
From: Fabien L. <laf...@gm...> - 2013年01月21日 13:52:03
I have installed MPL 1.2.0 but it's still laggy...
2013年1月18日 Paul Hobson <pmh...@gm...>
>
> On Thu, Jan 17, 2013 at 8:10 AM, Fabien Lafont <laf...@gm...>wrote:
>
>> Thanks! I have: Qt4Agg
>>
>>
>>
>> 2013年1月17日 Benjamin Root <ben...@ou...>
>>
>>>
>>> On Thu, Jan 17, 2013 at 8:43 AM, Fabien Lafont <laf...@gm...>wrote:
>>>
>>>> What is a backend??? The version number? I'm using Matplotlib 1.1.1
>>>>
>>>>
>>> from pylab import *
>>> get_backend()
>>>
>>> Ben Root
>>>
>>>
> It is probably coincidence, but I noted MPL running way faster when I
> stopped using QT4Agg and upgraded to 1.2.0.
>
> Try upgrading and report back.
> -paul
>
From: Thomas S. <spr...@hd...> - 2013年01月21日 13:09:46
Hi folks!
maybe you can point me in the right direction:
I have a list of colour measurements in Lab-Space(stored in an h5 table). Now, 3d-scatterplotting them was easy, also, assigning the corresponding rgb colour value to the spots is relatively easy.
For the plot i use:
p=ax.scatter3D(table.cols.Lab_a[:],table.cols.Lab_b[:],table.cols.Lab_L[:],c=cols)
Now, the annoying part: when i move around the figure with the mouse, the points in the background get "dimmed" or shaded down to less saturation. Now in my case, i want to turn this behaviour off, since i want the points to be the colour they represent, all the time.
How do i do this?
thanks for your help
Thomas
## values in "table"
from colormath.color_objects import LabColor
cols=[]
for row in table[:]:
 cols.append(LabColor(lab_l=row['Lab_L'],lab_a=row['Lab_a'],lab_b=row['Lab_b']).convert_to('rgb').get_rgb_hex())
from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.set_xlabel('a')
ax.set_ylabel('b')
ax.set_zlabel('L')
ax.set_xlim(-100,100)
ax.set_ylim(-100,100)
ax.set_zlim(0,100)
fig.show()
From: Kelson Z. <kb...@co...> - 2013年01月21日 12:28:30
I am making a heat map and want to label each row. I thus need the font 
size of the text to scale with the number of rows in the heat map. Is 
there a way to find out the length in points of an axes object so I can 
divide this by the number of rows and thus figure out how big to make 
the text?
Thanks for the help
From: cnorn <ch...@gm...> - 2013年01月21日 10:01:38
Are there any way to make column scatter plots with matplotlib. They are also
called beeswarm plot. plotSpread is implemented in matlab, which seems to do
the job, but I can't find it in matplotlib.
Thanks,
Chris
--
View this message in context: http://matplotlib.1069221.n5.nabble.com/How-to-make-column-scatter-plots-tp40276.html
Sent from the matplotlib - users mailing list archive at Nabble.com.
From: Scott H. <st...@co...> - 2013年01月20日 21:05:20
Jeff,
I'm not to experienced with these installations, so I really don't know. If you send a link to another installation I could try it. For what it's worth, If I run python setup.py build for basemap-1.0.5 I do not get this error.
--Scott
On Jan 20, 2013, at 3:44 PM, Jeff Whitaker <jef...@no...> wrote:
> Scott Henderson wrote:
>> 
>> Hello,
>> 
>> I've tried installing the latest version of basemap on OSX Lion and am getting the following error:
>> 
>> 
>> 
>> # -------------------
>> scotthenderson@basemap-1.0.6:python setup.py build
>> ld: warning: ld: warning: ignoring file nad2bin.o, file was built for unsupported file format ( 0xcf 0xfa 0xed 0xfe 0x 7 0x 0 0x 0 0x 1 0x 3 0x 0 0x 0 0x 0 0x 1 0x 0 0x 0 0x 0 ) which is not the architecture being linked (i386): nad2bin.oignoring file src/pj_malloc.o, file was built for unsupported file format ( 0xcf 0xfa 0xed 0xfe 0x 7 0x 0 0x 0 0x 1 0x 3 0x 0 0x 0 0x 0 0x 1 0x 0 0x 0 0x 0 ) which is not the architecture being linked (i386): src/pj_malloc.o
>> 
>> Undefined symbols for architecture i386:
>> "_main", referenced from:
>> -u command line option
>> ld: symbol(s) not found for architecture i386
>> clang: error: linker command failed with exit code 1 (use -v to see invocation)
>> ld: warning: ld: warning: ignoring file nad2bin.o, file was built for unsupported file format ( 0xcf 0xfa 0xed 0xfe 0x 7 0x 0 0x 0 0x 1 0x 3 0x 0 0x 0 0x 0 0x 1 0x 0 0x 0 0x 0 ) which is not the architecture being linked (i386): nad2bin.oignoring file src/pj_malloc.o, file was built for unsupported file format ( 0xcf 0xfa 0xed 0xfe 0x 7 0x 0 0x 0 0x 1 0x 3 0x 0 0x 0 0x 0 0x 1 0x 0 0x 0 0x 0 ) which is not the architecture being linked (i386): src/pj_malloc.o
>> 
>> Undefined symbols for architecture i386:
>> "_main", referenced from:
>> -u command line option
>> ld: symbol(s) not found for architecture i386
>> clang: error: linker command failed with exit code 1 (use -v to see invocation)
>> Traceback (most recent call last):
>> File "setup.py", line 97, in<module>
>> cc.link_executable(objects, execname)
>> File "/Library/Frameworks/Python.framework/Versions/7.3/lib/python2.7/distutils/ccompiler.py", line 698, in link_executable
>> debug, extra_preargs, extra_postargs, None, target_lang)
>> File "/Library/Frameworks/Python.framework/Versions/7.3/lib/python2.7/distutils/unixccompiler.py", line 262, in link
>> raise LinkError, msg
>> distutils.errors.LinkError: Command "cc -arch i386 nad2bin.o src/pj_malloc.o -o nad2bin" failed with exit status 1
> 
> 
> Scott:
> 
> Don't really know, but here's a guess:
> 
> Looks like a problem with your python installation - distutils is trying to use the -arch i386 compiler flag and you're probably on a 64 bit system (x86_64). 
> 
> I've built this on several macos x Mountain Lion systems without incident. Can you build other C extensions on your system?
> 
> -Jeff 
From: Scott H. <st...@co...> - 2013年01月20日 20:41:00
Hello, 
I've tried installing the latest version of basemap on OSX Lion and am getting the following error:
# -------------------
scotthenderson@basemap-1.0.6:python setup.py build
ld: warning: ld: warning: ignoring file nad2bin.o, file was built for unsupported file format ( 0xcf 0xfa 0xed 0xfe 0x 7 0x 0 0x 0 0x 1 0x 3 0x 0 0x 0 0x 0 0x 1 0x 0 0x 0 0x 0 ) which is not the architecture being linked (i386): nad2bin.oignoring file src/pj_malloc.o, file was built for unsupported file format ( 0xcf 0xfa 0xed 0xfe 0x 7 0x 0 0x 0 0x 1 0x 3 0x 0 0x 0 0x 0 0x 1 0x 0 0x 0 0x 0 ) which is not the architecture being linked (i386): src/pj_malloc.o
Undefined symbols for architecture i386:
 "_main", referenced from:
 -u command line option
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
ld: warning: ld: warning: ignoring file nad2bin.o, file was built for unsupported file format ( 0xcf 0xfa 0xed 0xfe 0x 7 0x 0 0x 0 0x 1 0x 3 0x 0 0x 0 0x 0 0x 1 0x 0 0x 0 0x 0 ) which is not the architecture being linked (i386): nad2bin.oignoring file src/pj_malloc.o, file was built for unsupported file format ( 0xcf 0xfa 0xed 0xfe 0x 7 0x 0 0x 0 0x 1 0x 3 0x 0 0x 0 0x 0 0x 1 0x 0 0x 0 0x 0 ) which is not the architecture being linked (i386): src/pj_malloc.o
Undefined symbols for architecture i386:
 "_main", referenced from:
 -u command line option
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Traceback (most recent call last):
 File "setup.py", line 97, in <module>
 cc.link_executable(objects, execname)
 File "/Library/Frameworks/Python.framework/Versions/7.3/lib/python2.7/distutils/ccompiler.py", line 698, in link_executable
 debug, extra_preargs, extra_postargs, None, target_lang)
 File "/Library/Frameworks/Python.framework/Versions/7.3/lib/python2.7/distutils/unixccompiler.py", line 262, in link
 raise LinkError, msg
distutils.errors.LinkError: Command "cc -arch i386 nad2bin.o src/pj_malloc.o -o nad2bin" failed with exit status 1
From: Eric F. <ef...@ha...> - 2013年01月20日 19:31:55
On 2013年01月20日 1:48 AM, Burak nebioğlu wrote:
> Dear Eric ,
>
> below are the results that I get when I see these errors it is also
> strange for me but I tried in matlab and it worked with mtlab style I
> tried for pcolormesh it works just like matlab it is (99,) (56,)
> dimensioned 2 vectors and data is 99*56 matrix
Sorry, I included the () by mistake on the requested dtype and the shape 
print statements. dtype and shape are attributes, so they don't need 
parentheses. In any case, you provided enough information for me to 
test, and I see exactly what you note--except that the bug is in 
pcolormesh, not pcolor. With either one, an argument sequence (x, y, z) 
should require that the shape of z be (ny, nx) or (ny-1, nx-2), not the 
transpose of that. If your present data array has shape (nx, ny), then use
pcolormesh(x, y, data.T)
and it will be plotted correctly.
It may be that matlab is trying to be helpful by doing a transpose 
automatically if that makes the function arguments seem to fit better, 
but that is not what we do, or what we would ever want to do. So, 
regardless of whether you use pcolor or pcolormesh, please use the 
argument order and shape requirements as described in the docstrings, 
the API documentation, and the examples. Otherwise you are not likely 
to get the result you want.
I have filed a bug report for this:
https://github.com/matplotlib/matplotlib/issues/1688
Eric
>
>
>
>
> type x <type 'numpy.ndarray'>
> X.dtype
>
> print 'X.dtype',X.dtype()
> TypeError: 'numpy.dtype' object is not callable
>
> print 'X.shape',X.shape()
> TypeError: 'tuple' object is not callable
>
>
> type y <type 'numpy.ndarray'>
> y.shape
>
> print 'y.dtype',Y.dtype()
> TypeError: 'numpy.dtype' object is not callable
>
>
> print 'y.shape',Y.shape()
> TypeError: 'tuple' object is not callable
>
> type data <type 'numpy.ndarray'>
> data.dtype
>
> print 'data.dtype',reshaped.dtype()
> TypeError: 'numpy.dtype' object is not callable
>
> print 'data.shape',reshaped.shape()
> TypeError: 'tuple' object is not callable
>
> Thank you again
>
>
>
>
> 2013年1月20日 Eric Firing <ef...@ha... <mailto:ef...@ha...>>
>
> print type(x)
> print x.dtype()
> print x.shape()
>
>
>
From: Magician <f_m...@ma...> - 2013年01月20日 08:24:47
Hi all,
I'm using matplotlib 1.1.0 for Python27 on Windows 7.
I'd like to apply TeX fonts at legends and labels.
But if I try to do, the texts' baselines become upper,
and the layouts get out of shapes.
For example, I set legend titles as below:
 - 'Plot 1'
 - r'Plot 2 ($\alpha$)'
 -'Plot 3'
then only the second one was raised.
Both Computer Modern and \mathdefault fonts have same issues.
I want to fix all the baselines as default positions.
Does anyone have good ideas?
Magician
From: Eric F. <ef...@ha...> - 2013年01月19日 20:42:48
On 2013年01月19日 3:59 AM, burak nebioğlu wrote:
> Hello everone,
>
> I am trying to use pcolor from pylab but I can't get it work. As you
> know signature of pcolor for Matlab is pcolor(x,y,data) which x and y
> are vectors. When I try pcolor(data)
>
> it works but it is not what I want. Because without x,y vectors placed
> it is not generating correct result. when i put x and y vectors in place
> I get a ValueError: shape mismatch: objects cannot be broadcast to a
> single shape
Right, because your x, y, and data don't have properly matching shapes.
http://matplotlib.org/api/axes_api.html?highlight=pcolor#matplotlib.axes.Axes.pcolor
The various ways to make them match are explained in the link above.
Note also that in most cases, using pcolormesh provides the desired 
result but with a much faster implementation. Pcolor is slow, and 
should be used only for rather small arrays.
Eric
>
> but in matlab it is working with x , y vectors.
>
> Any idea.
>
> Thanks a lot for your time
>
>
> pcolor(X,Y,reshaped) ----> reshaped is my data matrix
> show()
>
>
> Burak
>
>
> ------------------------------------------------------------------------------
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>
From: burak n. <bur...@gm...> - 2013年01月19日 13:59:35
Hello everone,
I am trying to use pcolor from pylab but I can't get it work. As you know
signature of pcolor for Matlab is pcolor(x,y,data) which x and y are
vectors. When I try pcolor(data)
it works but it is not what I want. Because without x,y vectors placed it
is not generating correct result. when i put x and y vectors in place I get
a ValueError: shape mismatch: objects cannot be broadcast to a single shape
but in matlab it is working with x , y vectors.
Any idea.
Thanks a lot for your time
pcolor(X,Y,reshaped) ----> reshaped is my data matrix
show()
Burak
From: Paul H. <pmh...@gm...> - 2013年01月18日 22:57:51
On Thu, Jan 17, 2013 at 8:10 AM, Fabien Lafont <laf...@gm...>wrote:
> Thanks! I have: Qt4Agg
>
>
>
> 2013年1月17日 Benjamin Root <ben...@ou...>
>
>>
>> On Thu, Jan 17, 2013 at 8:43 AM, Fabien Lafont <laf...@gm...>wrote:
>>
>>> What is a backend??? The version number? I'm using Matplotlib 1.1.1
>>>
>>>
>> from pylab import *
>> get_backend()
>>
>> Ben Root
>>
>>
It is probably coincidence, but I noted MPL running way faster when I
stopped using QT4Agg and upgraded to 1.2.0.
Try upgrading and report back.
-paul
From: gad <mas...@ms...> - 2013年01月17日 21:57:38
Hi everyone,
I'm getting in trouble trying to delete a couple of subaxes from my canvas.
The problem is shown by the example script below:
from matplotlib.figure import Figure
from mpl_toolkits.axes_grid.axes_divider import make_axes_locatable
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as
FigureCanvas
from PyQt4.QtCore import *
from PyQt4.QtGui import *
import sys
class Test(QWidget):
 def __init__(self):
 QWidget.__init__(self)
 self.resize(1000, 600) 
 self.fig = Figure(figsize=(100,100), dpi=75) 
 axes1 = self.fig.add_subplot(121)
 axes2 = self.fig.add_subplot(122)
 self.subaxes = []
 for ax in [axes1, axes2]:
 self.divider = make_axes_locatable(ax)
 self.subaxes.append(self.divider.append_axes("right", "40%",
"20%"))
 
 b = QPushButton("Remove subaxes")
 b.clicked.connect(self.OnBtnClicked)
 l = QHBoxLayout()
 l.addWidget(FigureCanvas(self.fig))
 l.addWidget(b)
 self.setLayout(l)
 def OnBtnClicked(self):
 for sa in self.subaxes:
 self.fig.delaxes(sa)
 del sa
 self.fig.canvas.draw()
app = QApplication(sys.argv)
win = Test()
win.show()
sys.exit(app.exec_())
The main window is made up of two main axes an two subaxes placed on their
right side. If you click the button in the window, the two subaxes disappear
as I expect, but the orignal axes don't resize. Is there something I am
missing? Or can anyone point me out if there is a better way to achieve
this?
Thanks in advance!
--
View this message in context: http://matplotlib.1069221.n5.nabble.com/Subaxes-deletion-issue-tp40268.html
Sent from the matplotlib - users mailing list archive at Nabble.com.
From: CAB <ca...@ya...> - 2013年01月17日 20:56:04
Dear Michael and Christoph,
 
Many thanks for looking into this. I am away from my W8 virtual machine right now, so I couldn't look into relative file sizes on the fonts. I'd appreciate being informed on any fixes.
 
Chad
________________________________
From: Michael Droettboom <md...@st...>
To: mat...@li... 
Sent: Thursday, January 17, 2013 1:08 PM
Subject: Re: [Matplotlib-users] mathtext and fonts under Windows 8
Christoph,
The patch you attach looks like it might be helpful to us. I'll 
investigate further.
Mike
On 01/17/2013 12:10 PM, Christoph Gohlke wrote:
> I can reproduce this. The Windows 8 Arial font is different from the one
> in Windows 7. It seems other projects encountered and fixed the same
> issue: <http://code.google.com/p/sumatrapdf/issues/detail?id=2056>
>
> Christoph
>
>
> On 1/17/2013 7:20 AM, Michael Droettboom wrote:
>> Is the Arial font file different on Windows 8 vs. Windows 7? (Just a
>> difference in file size would be enough to know). If so, it's probably
>> the nature of those differences that we need to look into.
>>
>> Mike
>>
>> On 01/16/2013 10:04 AM, CAB wrote:
>>> Dear Mike & Paul,
>>> Thanks for your replies. I tried Mike's protocol, and I found that
>>> font_manager found the Arial font ("C:\\Windows\\fonts\\Arial.ttf") in
>>> the right place. I don't have fontforge yet, so I guess I need to
>>> install and check it out.
>>> But the thing that bothers me about this error is that it only occurs
>>> if I try to mix mathtext and non-matplotlib font. So matplotlib finds
>>> Arial just fine. And it finds the mathtext font fine. Only the
>>> mixture is fatal. It's as if the parser loses track of the Arial
>>> font, or it looks for a mathtext glyph in Arial. Very strange that it
>>> occurs only in Windows 8.
>>> Regarding Paul's response, I don't have LaTeX on the W8 computer, and
>>> my impression is that mathtext doesn't look for "mathematical Arial",
>>> instead there are some packaged fonts that it uses for this purpose,
>>> like Computer Modern and STIX.
>>> I'll try to hunt this down further, and let you know if I find anything.
>>> Best,
>>> Chad
>>>
>>> *From:* Michael Droettboom <md...@st...>
>>> *To:* mat...@li...
>>> *Sent:* Thursday, January 10, 2013 7:35 AM
>>> *Subject:* Re: [Matplotlib-users] mathtext and fonts under Windows 8
>>>
>>> Since this is specific to Windows 8, I wonder if the Arial font has
>>> been updated in that version. If it's a newer OTF font, rather than a
>>> TTF font, it's possible matplotlib can't read it correctly.
>>>
>>> You can see what font file is on each platform by starting up a Python
>>> prompt and doing:
>>>
>>>  >>> from matplotlib import font_manager
>>>  >>> font_manager.findfont("Arial")
>>>
>>> It should display the path to the font. From that, you should be able
>>> to get the Arial file on each of your platforms and see if they are
>>> different. To get more details, you could open them up in the open
>>> source "fontforge" tool. Sorry I can't do this myself, as I don't
>>> have access to anything past XP.
>>>
>>> If the fonts turn out to be different, as a workaround, you could try
>>> backing up and then replacing the Arial font on your Windows 8 machine
>>> with the one on your Windows 7 machine.
>>>
>>> Cheers,
>>> Mike
>>>
>>> On 01/09/2013 11:59 PM, Paul Hobson wrote:
>>>> Sounds like it might have something to do with your Latex
>>>> installation (if any) or the barebones Latex-rendering done by MPL
>>>> alone. Namely, they simply don't have the characters for mathematical
>>>> Arial available.
>>>>
>>>> Not too sure though. Hopefully someone more knowledgeable responds.
>>>> -paul
>>>>
>>>>
>>>> On Tue, Jan 8, 2013 at 9:31 PM, CAB <ca...@ya...
>>>> <mailto:ca...@ya...>> wrote:
>>>>
>>>>   Hi, All,
>>>>
>>>>   I am encountering a thorny problem when trying to run matplotlib
>>>>   under Windows 8. If I label an axis using a command like
>>>>
>>>>   ax.set_ylabel(r'time (s)', name='Arial'),
>>>>
>>>>   all is well. But if try to add mathtext to that, as in
>>>>
>>>>   ax.set_ylabel(r'time ($s$)', name='Arial'),
>>>>
>>>>   mathtext.py <http://mathtext.py/> throws an error (a very long
>>>>   stream) ending in "RuntimeError: Face has no glyph names". If I
>>>>   remove the "name='Arial'" above and let the program default to
>>>>   Bitstream Vera Sans, the mathtext works.
>>>>
>>>>   This problem does not occur under Windows 7 or XP; only under two
>>>>   different Windows 8 installations. Any ideas what's going on?
>>>>
>>>>   Chad
>>>>
>>>>   ------------------------------------------------------------------------------
>>>>   Master Java SE, Java EE, Eclipse, Spring, Hibernate, JavaScript,
>>>>   jQuery
>>>>   and much more. Keep your Java skills current with LearnJavaNow -
>>>>   200+ hours of step-by-step video tutorials by Java experts.
>>>>   SALE 49ドル.99 this month only -- learn more at:
>>>>   http://p.sf.net/sfu/learnmore_122612
>>>>   _______________________________________________
>>>>   Matplotlib-users mailing list
>>>>   Mat...@li...
>>>>   <mailto:Mat...@li...>
>>>>   https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>>>
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------------------------
>>>> Master Visual Studio, SharePoint, SQL,ASP.NET <http://asp.net/>, C# 2012, HTML5, CSS,
>>>> MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current
>>>> with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft
>>>> MVPs and experts. ON SALE this month only -- learn more at:
>>>> http://p.sf.net/sfu/learnmore_122712
>>>>
>>>>
>>>> _______________________________________________
>>>> Matplotlib-users mailing list
>>>> Mat...@li... <mailto:Mat...@li...>
>>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>>
>>> ------------------------------------------------------------------------------
>>> Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS,
>>> MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current
>>> with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft
>>> MVPs and experts. ON SALE this month only -- learn more at:
>>> http://p.sf.net/sfu/learnmore_122712
>>> _______________________________________________
>>> Matplotlib-users mailing list
>>> Mat...@li...
>>> <mailto:Mat...@li...>
>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Master Java SE, Java EE, Eclipse, Spring, Hibernate, JavaScript, jQuery
>>> and much more. Keep your Java skills current with LearnJavaNow -
>>> 200+ hours of step-by-step video tutorials by Java experts.
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>>>
>>>
>>> _______________________________________________
>>> Matplotlib-users mailing list
>>> Mat...@li...
>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
>>
>> ------------------------------------------------------------------------------
>> Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS,
>> MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current
>> with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft
>> MVPs and experts. ON SALE this month only -- learn more at:
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>>
>>
>> _______________________________________________
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>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>
> ------------------------------------------------------------------------------
> Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS,
> MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current
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------------------------------------------------------------------------------
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MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current
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_______________________________________________
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From: Michael D. <md...@st...> - 2013年01月17日 19:09:00
Christoph,
The patch you attach looks like it might be helpful to us. I'll 
investigate further.
Mike
On 01/17/2013 12:10 PM, Christoph Gohlke wrote:
> I can reproduce this. The Windows 8 Arial font is different from the one
> in Windows 7. It seems other projects encountered and fixed the same
> issue: <http://code.google.com/p/sumatrapdf/issues/detail?id=2056>
>
> Christoph
>
>
> On 1/17/2013 7:20 AM, Michael Droettboom wrote:
>> Is the Arial font file different on Windows 8 vs. Windows 7? (Just a
>> difference in file size would be enough to know). If so, it's probably
>> the nature of those differences that we need to look into.
>>
>> Mike
>>
>> On 01/16/2013 10:04 AM, CAB wrote:
>>> Dear Mike & Paul,
>>> Thanks for your replies. I tried Mike's protocol, and I found that
>>> font_manager found the Arial font ("C:\\Windows\\fonts\\Arial.ttf") in
>>> the right place. I don't have fontforge yet, so I guess I need to
>>> install and check it out.
>>> But the thing that bothers me about this error is that it only occurs
>>> if I try to mix mathtext and non-matplotlib font. So matplotlib finds
>>> Arial just fine. And it finds the mathtext font fine. Only the
>>> mixture is fatal. It's as if the parser loses track of the Arial
>>> font, or it looks for a mathtext glyph in Arial. Very strange that it
>>> occurs only in Windows 8.
>>> Regarding Paul's response, I don't have LaTeX on the W8 computer, and
>>> my impression is that mathtext doesn't look for "mathematical Arial",
>>> instead there are some packaged fonts that it uses for this purpose,
>>> like Computer Modern and STIX.
>>> I'll try to hunt this down further, and let you know if I find anything.
>>> Best,
>>> Chad
>>>
>>> *From:* Michael Droettboom <md...@st...>
>>> *To:* mat...@li...
>>> *Sent:* Thursday, January 10, 2013 7:35 AM
>>> *Subject:* Re: [Matplotlib-users] mathtext and fonts under Windows 8
>>>
>>> Since this is specific to Windows 8, I wonder if the Arial font has
>>> been updated in that version. If it's a newer OTF font, rather than a
>>> TTF font, it's possible matplotlib can't read it correctly.
>>>
>>> You can see what font file is on each platform by starting up a Python
>>> prompt and doing:
>>>
>>> >>> from matplotlib import font_manager
>>> >>> font_manager.findfont("Arial")
>>>
>>> It should display the path to the font. From that, you should be able
>>> to get the Arial file on each of your platforms and see if they are
>>> different. To get more details, you could open them up in the open
>>> source "fontforge" tool. Sorry I can't do this myself, as I don't
>>> have access to anything past XP.
>>>
>>> If the fonts turn out to be different, as a workaround, you could try
>>> backing up and then replacing the Arial font on your Windows 8 machine
>>> with the one on your Windows 7 machine.
>>>
>>> Cheers,
>>> Mike
>>>
>>> On 01/09/2013 11:59 PM, Paul Hobson wrote:
>>>> Sounds like it might have something to do with your Latex
>>>> installation (if any) or the barebones Latex-rendering done by MPL
>>>> alone. Namely, they simply don't have the characters for mathematical
>>>> Arial available.
>>>>
>>>> Not too sure though. Hopefully someone more knowledgeable responds.
>>>> -paul
>>>>
>>>>
>>>> On Tue, Jan 8, 2013 at 9:31 PM, CAB <ca...@ya...
>>>> <mailto:ca...@ya...>> wrote:
>>>>
>>>> Hi, All,
>>>>
>>>> I am encountering a thorny problem when trying to run matplotlib
>>>> under Windows 8. If I label an axis using a command like
>>>>
>>>> ax.set_ylabel(r'time (s)', name='Arial'),
>>>>
>>>> all is well. But if try to add mathtext to that, as in
>>>>
>>>> ax.set_ylabel(r'time ($s$)', name='Arial'),
>>>>
>>>> mathtext.py <http://mathtext.py/> throws an error (a very long
>>>> stream) ending in "RuntimeError: Face has no glyph names". If I
>>>> remove the "name='Arial'" above and let the program default to
>>>> Bitstream Vera Sans, the mathtext works.
>>>>
>>>> This problem does not occur under Windows 7 or XP; only under two
>>>> different Windows 8 installations. Any ideas what's going on?
>>>>
>>>> Chad
>>>>
>>>> ------------------------------------------------------------------------------
>>>> Master Java SE, Java EE, Eclipse, Spring, Hibernate, JavaScript,
>>>> jQuery
>>>> and much more. Keep your Java skills current with LearnJavaNow -
>>>> 200+ hours of step-by-step video tutorials by Java experts.
>>>> SALE 49ドル.99 this month only -- learn more at:
>>>> http://p.sf.net/sfu/learnmore_122612
>>>> _______________________________________________
>>>> Matplotlib-users mailing list
>>>> Mat...@li...
>>>> <mailto:Mat...@li...>
>>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>>>
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------------------------
>>>> Master Visual Studio, SharePoint, SQL,ASP.NET <http://asp.net/>, C# 2012, HTML5, CSS,
>>>> MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current
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>>>>
>>>> _______________________________________________
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>>>> Mat...@li... <mailto:Mat...@li...>
>>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>>
>>> ------------------------------------------------------------------------------
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>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
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>>>
>>>
>>>
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>>> _______________________________________________
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>>
>>
>> ------------------------------------------------------------------------------
>> Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS,
>> MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current
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>>
>>
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> Mat...@li...
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From: Christoph G. <cg...@uc...> - 2013年01月17日 17:10:50
I can reproduce this. The Windows 8 Arial font is different from the one 
in Windows 7. It seems other projects encountered and fixed the same 
issue: <http://code.google.com/p/sumatrapdf/issues/detail?id=2056>
Christoph
On 1/17/2013 7:20 AM, Michael Droettboom wrote:
> Is the Arial font file different on Windows 8 vs. Windows 7? (Just a
> difference in file size would be enough to know). If so, it's probably
> the nature of those differences that we need to look into.
>
> Mike
>
> On 01/16/2013 10:04 AM, CAB wrote:
>> Dear Mike & Paul,
>> Thanks for your replies. I tried Mike's protocol, and I found that
>> font_manager found the Arial font ("C:\\Windows\\fonts\\Arial.ttf") in
>> the right place. I don't have fontforge yet, so I guess I need to
>> install and check it out.
>> But the thing that bothers me about this error is that it only occurs
>> if I try to mix mathtext and non-matplotlib font. So matplotlib finds
>> Arial just fine. And it finds the mathtext font fine. Only the
>> mixture is fatal. It's as if the parser loses track of the Arial
>> font, or it looks for a mathtext glyph in Arial. Very strange that it
>> occurs only in Windows 8.
>> Regarding Paul's response, I don't have LaTeX on the W8 computer, and
>> my impression is that mathtext doesn't look for "mathematical Arial",
>> instead there are some packaged fonts that it uses for this purpose,
>> like Computer Modern and STIX.
>> I'll try to hunt this down further, and let you know if I find anything.
>> Best,
>> Chad
>>
>> *From:* Michael Droettboom <md...@st...>
>> *To:* mat...@li...
>> *Sent:* Thursday, January 10, 2013 7:35 AM
>> *Subject:* Re: [Matplotlib-users] mathtext and fonts under Windows 8
>>
>> Since this is specific to Windows 8, I wonder if the Arial font has
>> been updated in that version. If it's a newer OTF font, rather than a
>> TTF font, it's possible matplotlib can't read it correctly.
>>
>> You can see what font file is on each platform by starting up a Python
>> prompt and doing:
>>
>> >>> from matplotlib import font_manager
>> >>> font_manager.findfont("Arial")
>>
>> It should display the path to the font. From that, you should be able
>> to get the Arial file on each of your platforms and see if they are
>> different. To get more details, you could open them up in the open
>> source "fontforge" tool. Sorry I can't do this myself, as I don't
>> have access to anything past XP.
>>
>> If the fonts turn out to be different, as a workaround, you could try
>> backing up and then replacing the Arial font on your Windows 8 machine
>> with the one on your Windows 7 machine.
>>
>> Cheers,
>> Mike
>>
>> On 01/09/2013 11:59 PM, Paul Hobson wrote:
>>> Sounds like it might have something to do with your Latex
>>> installation (if any) or the barebones Latex-rendering done by MPL
>>> alone. Namely, they simply don't have the characters for mathematical
>>> Arial available.
>>>
>>> Not too sure though. Hopefully someone more knowledgeable responds.
>>> -paul
>>>
>>>
>>> On Tue, Jan 8, 2013 at 9:31 PM, CAB <ca...@ya...
>>> <mailto:ca...@ya...>> wrote:
>>>
>>> Hi, All,
>>>
>>> I am encountering a thorny problem when trying to run matplotlib
>>> under Windows 8. If I label an axis using a command like
>>>
>>> ax.set_ylabel(r'time (s)', name='Arial'),
>>>
>>> all is well. But if try to add mathtext to that, as in
>>>
>>> ax.set_ylabel(r'time ($s$)', name='Arial'),
>>>
>>> mathtext.py <http://mathtext.py/> throws an error (a very long
>>> stream) ending in "RuntimeError: Face has no glyph names". If I
>>> remove the "name='Arial'" above and let the program default to
>>> Bitstream Vera Sans, the mathtext works.
>>>
>>> This problem does not occur under Windows 7 or XP; only under two
>>> different Windows 8 installations. Any ideas what's going on?
>>>
>>> Chad
>>>
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From: Martin M. <mmo...@fo...> - 2013年01月17日 16:37:16
Hi Ben,
 thank you, I don't think I managed to upload the figures attached to the email, but at
least, the "issue" is opened:
https://github.com/matplotlib/matplotlib/issues/1679
Thanks,
Martin
Benjamin Root wrote:
> 
> 
> On Sat, Dec 29, 2012 at 4:41 PM, Martin Mokrejs <mmo...@fo... <mailto:mmo...@fo...>> wrote:
> 
> Hi,
> I recently updated to matplotlib-1.2.0 from 1.1.1 and my figures have rotated
> order of color bars stacked upon each other. Here is a small testcase I sketched
> now and two generated png files are attached, generated by the two different
> matplotlib versions. The colornames are just bad in the legend, just to show that
> the order of input data is same in both cases.
> 
> I would be grateful for any comments on this.
> Thank you,
> Martin
> 
> 
> Martin,
> 
> Could you file a bug report on this, please? I would definitely would like to see a fix for this for v1.2.1.
> 
> Cheers!
> Ben Root
> 

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