Re: [Matplotlib-users] use shapefile to create a mask?

2011-11-03 Thread Matt S. 
I've used Pyshapelib and Polygon to do this type of analysis in the past.
 Thuban may get ya what you need.

On Thu, Nov 3, 2011 at 3:40 PM, questions anon wrote:

> Hi All,
> Is there a way to select only the values within a particular shapefile to
> analyse.
> I would like to do something like:
>
> array=numpyarraycoveringtemperatureofwholestate
> shapefile=forestedregions.shp
>
> newarray=ma.masked_values(array, shapefile)
> meantemperatureofforestedregions=MA.mean(newarray)
> print meantemperatureofforestedregions
>
>
> Any ideas of functions I could use, examples I could follow?
> thanks
>
>
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Re: [Matplotlib-users] use shapefile to create a mask?

2011-11-03 Thread Paul Hobson 
To the best of my knowledge, this beyond the scope of matplotlib.
Scipy or Shapely *might* have something for you, but you best bet is
to look into the raster clipping functionality of GDAL/OGR.

Hope that helps,
-paul

On Thu, Nov 3, 2011 at 3:40 PM, questions anon  wrote:
> Hi All,
> Is there a way to select only the values within a particular shapefile to
> analyse.
> I would like to do something like:
>
> array=numpyarraycoveringtemperatureofwholestate
> shapefile=forestedregions.shp
>
> newarray=ma.masked_values(array, shapefile)
> meantemperatureofforestedregions=MA.mean(newarray)
> print meantemperatureofforestedregions
>
>
> Any ideas of functions I could use, examples I could follow?
> thanks
> --
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>
>

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[Matplotlib-users] use shapefile to create a mask?

2011-11-03 Thread questions anon 
Hi All,
Is there a way to select only the values within a particular shapefile to
analyse.
I would like to do something like:

array=numpyarraycoveringtemperatureofwholestate
shapefile=forestedregions.shp

newarray=ma.masked_values(array, shapefile)
meantemperatureofforestedregions=MA.mean(newarray)
print meantemperatureofforestedregions


Any ideas of functions I could use, examples I could follow?
thanks
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Re: [Matplotlib-users] Ternary Plot

2011-11-03 Thread Joe Kington 
The link on Nabble is broken, so here's (I think) a fixed version. It looks
like the name of the branch was changed slightly at some point.

https://github.com/kdavies4/matplotlib/compare/master...ternary2

Cheers,
-Joe



On Thu, Nov 3, 2011 at 3:14 PM, Benjamin Root  wrote:

>
>
> On Thu, Nov 3, 2011 at 2:58 PM, elmar werling wrote:
>
>> Hi,
>>
>> could not found anything like plot_ternary() in the matplotlib
>> documentation. Is there an easy to use method to plot data points and
>> lines in a ternary plot using matplotlib?
>>
>> Any hint is wellcome
>>
>> Elmar
>>
>>
> This is a requested feature, but has not been implemented yet within
> matplotlib.  However, some other users have created a hack to do this:
>
> http://old.nabble.com/Ternary-or-triangle-plots-td32506324.html
>
> Ben Root
>
>
>
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Re: [Matplotlib-users] Build MPL with VS 2008 problem

2011-11-03 Thread Mads Ipsen 
On 11/03/2011 04:34 PM, Christoph Gohlke wrote:
>
> On 11/3/2011 6:45 AM, Mads Ipsen wrote:
>> On 11/02/2011 09:46 PM, Christoph Gohlke wrote:
>>> On 11/2/2011 1:39 PM, Mads Ipsen wrote:
 On 11/02/2011 09:28 PM, Christoph Gohlke wrote:
> On 11/2/2011 1:11 PM, Mads Ipsen wrote:
>> On 11/02/2011 08:43 PM, Michael Droettboom wrote:
>>> On 11/02/2011 01:34 PM, Mads Ipsen wrote:
 On 11/02/2011 05:50 PM, Michael Droettboom wrote:
> On 11/02/2011 10:53 AM, Mads Ipsen wrote:
>> Any clues to why ft2build.h cannot be located. The above docs says
>> it should be part of the binary installer.
> The binary for freetype is included with the installer, but the
> headers (needed to build, but not to run) are not. Do you need to
> build matplotlib from source, or just use it?
>
> Mike
 I need to built it from source.

 Mads
>>> In that case, you will need to install the development packages for
>>> freetype, libpng, libz, and numpy.
>>>
>>> I'm not a regular Windows user, so I don't know what the best practice
>>> is for that these days. Some of the other members on this list can
>>> hopefully jump in. There was also a thread on this list about
>>> "Building on Windows"   from 08/18/2011 that might be helpful.
>>>
>>> Mike
>>>
>>> --
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>>> Matplotlib-users@lists.sourceforge.net
>>>  
>>> 
>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>> I can't seem to find this thread anywhere. It it really that difficult
>> to build on Windows? It most be documented somewhere what the prereqs 
>> are?
>>
> Seeand
> 
>
> Prebuilt static link libraries for msvc compilers are available at
> .
>
> It seems you are trying to compile from within cygwin, using the include
> files provided by cygwin. That will probably not work.
>
> Christoph
>
>
>
>> Best regards,
>>
>> Mads
>>
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> 
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 I am building from the VS2008 command prompt. But thanks for the info.
 Will have a look.

 Best regards,

 Mads
>>> OK. The cygwin in your home path looked suspicious:"c:\cygwin\home\mads
>>> ipsen\"
>>>
>>> Christoph
>>>
>>> --
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>>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>> Hi,
>>
>> I am now done with the 32 bit case and am trying to do the same for 64
>> bit now.
>>
>> Here I get the error:
>>
>> Creating library build\temp.win32-2.7\Release\src\ft2font.lib and object
>> buil
>> d\temp.win32-2.7\Release\src\ft2font.exp
>> ft2font.obj : error LNK2019: unresolved external symbol
>> _FT_Set_Transform refere
>> nced in function "public: class Py::Object __thiscall
>> FT2Font::set_size(class Py
>> ::Tuple const&)" (?set_size@FT2Font@@QAE?AVObject@Py@@ABVTuple@3@@Z)
>> ft2font.obj : error LNK2019: unresolved external symbol
>> _FT_Set_Char_Size refere
>> nced in function "public: class Py::Object __thiscall
>> FT2Font::set_size(class Py
>> ::Tuple const&)" (?set_size@FT2Font@@QAE?AVObject@Py@@ABVTuple@3@@Z)
>> ft2font.obj : error LNK2019: unresolved external symbol _FT_Set_Charmap
>> referenc
>> ed in function "public: class Py::Object __thiscall
>> FT2Font::set_charmap(class P
>> y::Tuple const&)" (?set_charmap@FT2Font@@QAE?AVObject@Py@@ABVTuple@3@@Z)
>> ft2font.obj : error LNK2019: unresolved external symbol
>> _FT_Select_Charmap refer
>> enced in function "public: clas

Re: [Matplotlib-users] Ternary Plot

2011-11-03 Thread Benjamin Root 
On Thu, Nov 3, 2011 at 2:58 PM, elmar werling  wrote:

> Hi,
>
> could not found anything like plot_ternary() in the matplotlib
> documentation. Is there an easy to use method to plot data points and
> lines in a ternary plot using matplotlib?
>
> Any hint is wellcome
>
> Elmar
>
>
This is a requested feature, but has not been implemented yet within
matplotlib.  However, some other users have created a hack to do this:

http://old.nabble.com/Ternary-or-triangle-plots-td32506324.html

Ben Root
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Re: [Matplotlib-users] Animation module

2011-11-03 Thread Benjamin Root 
On Thu, Nov 3, 2011 at 12:51 PM, Stuart Mumford wrote:

> Hello,
>
> I discovered the (wonderful) animation module in the v1.1 release today.
>
> However I think I may have quickly outgrown it a bit!
>
> I am plotting some simulation data see:
> http://dl.dropbox.com/u/2796140/mhdmodes_3.mp4 for an example made with
> the animation class.
>
> There is one thing missing from the above, which is colour bars!
>
> I have created the animation using the ArtisitAnimation class because each
> frame takes about 1-2 seconds to calculate the magnetic field lines, so
> using FuncAnimate would result in a very slow animation.
>
> The problem is that I can not add a colorbar instance to the list of
> artists that the animator draws as it is not an artist instance.
>
> This is a slightly modified version of the example [
> http://matplotlib.sourceforge.net/examples/animation/dynamic_image2.html]
> that shows my problem:
>
> #!/usr/bin/env python
>>
>> """
>>
>> An animated image
>>
>> """
>>
>> import numpy as np
>>
>> import matplotlib.pyplot as plt
>>
>> import matplotlib.animation as animation
>>
>> fig = plt.figure()
>>
>> def f(x, y):
>>
>> return np.sin(x) + np.cos(y)
>>
>> x = np.linspace(0, 2 * np.pi, 120)
>>
>> y = np.linspace(0, 2 * np.pi, 100).reshape(-1, 1)
>>
>> # ims is a list of lists, each row is a list of artists to draw in the
>>
>> # current frame; here we are just animating one artist, the image, in
>>
>> # each frame
>>
>> ims = []
>>
>> for i in range(60):
>>
>> x += np.pi / 15.
>>
>> y += np.pi / 20.
>>
>> im = plt.imshow(f(x, y))
>>
>> cb = plt.colorbar()
>>
>> ims.append([im, cb])
>>
>> ani = animation.ArtistAnimation(fig, ims, interval=50, blit=True,
>>
>> repeat_delay=1000)
>>
>> plt.show()
>>
>>
> Which generates the following error
>
>> Traceback (most recent call last):
>>   File "/home/stuart/Documents/VAC/sac_anim_axtest.py", line 28, in
>> 
>> repeat_delay=1000)
>>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
>> 356, in __init__
>> TimedAnimation.__init__(self, fig, *args, **kwargs)
>>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
>> 304, in __init__
>> Animation.__init__(self, fig, event_source=event_source, *args,
>> **kwargs)
>>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
>> 53, in __init__
>> self._init_draw()
>>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
>> 363, in _init_draw
>> artist.set_visible(False)
>> AttributeError: Colorbar instance has no attribute 'set_visible'
>>
>
>
>
> I attempted to add the colorbar to a AxesSubplot instance and then draw
> the axes in the artist list, however when I add a Axes instance to the
> artist list I get a wonderful error:
>
>
> Traceback (most recent call last):
>>   File
>> "/usr/lib64/python2.7/site-packages/matplotlib/backends/backend_gtk.py",
>> line 122, in _on_timer
>> TimerBase._on_timer(self)
>>   File "/usr/lib64/python2.7/site-packages/matplotlib/backend_bases.py",
>> line 1092, in _on_timer
>> ret = func(*args, **kwargs)
>>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
>> 315, in _step
>> still_going = Animation._step(self, *args)
>>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
>> 177, in _step
>> self._draw_next_frame(framedata, self._blit)
>>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
>> 197, in _draw_next_frame
>> self._post_draw(framedata, blit)
>>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
>> 220, in _post_draw
>> self._blit_draw(self._drawn_artists, self._blit_cache)
>>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
>> 235, in _blit_draw
>> a.axes.draw_artist(a)
>>   File "/usr/lib64/python2.7/site-packages/matplotlib/axes.py", line
>> 1994, in draw_artist
>> assert self._cachedRenderer is not None
>> AssertionError
>>
>
>  I also saw the subplots animation example [
> http://matplotlib.sourceforge.net/examples/animation/subplots.html],
> however that is also based on FuncAnimate, would there be a way to create
> something similar for ArtistAnimate?
>
> Thanks
> Stuart
>
>
Do you need the colorbar scale to change with each frame?  If not, you can
create a wholly independent colorbar like so:

cb = mpl.colorbar.ColorbarBase(cax, cmap=cmap, norm=norm)

where 'cax' I usually get by using the axes_grid1 toolkit to pre-allocate a
spot for a colorbar axes (as opposed to using fig.add_subplots()).

However, if you need to the colorbar to change with the frames, then I
would use the FuncAnimator, but a little differently than you are probably
imagining.  The fig.colorbar() function requires a ScalarMappable object
(such as an object from imshow()).  What I would do is "prime the pump" by
creating the first frame.  Then create a func animator that calls a
function that loads the cached results based on an index number and
di

[Matplotlib-users] Ternary Plot

2011-11-03 Thread elmar werling 
Hi,

could not found anything like plot_ternary() in the matplotlib 
documentation. Is there an easy to use method to plot data points and 
lines in a ternary plot using matplotlib?

Any hint is wellcome

Elmar


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[Matplotlib-users] Animation module

2011-11-03 Thread Stuart Mumford 
Hello,

I discovered the (wonderful) animation module in the v1.1 release today.

However I think I may have quickly outgrown it a bit!

I am plotting some simulation data see:
http://dl.dropbox.com/u/2796140/mhdmodes_3.mp4 for an example made with the
animation class.

There is one thing missing from the above, which is colour bars!

I have created the animation using the ArtisitAnimation class because each
frame takes about 1-2 seconds to calculate the magnetic field lines, so
using FuncAnimate would result in a very slow animation.

The problem is that I can not add a colorbar instance to the list of
artists that the animator draws as it is not an artist instance.

This is a slightly modified version of the example [
http://matplotlib.sourceforge.net/examples/animation/dynamic_image2.html]
that shows my problem:

 #!/usr/bin/env python
>
> """
>
> An animated image
>
> """
>
> import numpy as np
>
> import matplotlib.pyplot as plt
>
> import matplotlib.animation as animation
>
> fig = plt.figure()
>
> def f(x, y):
>
> return np.sin(x) + np.cos(y)
>
> x = np.linspace(0, 2 * np.pi, 120)
>
> y = np.linspace(0, 2 * np.pi, 100).reshape(-1, 1)
>
> # ims is a list of lists, each row is a list of artists to draw in the
>
> # current frame; here we are just animating one artist, the image, in
>
> # each frame
>
> ims = []
>
> for i in range(60):
>
> x += np.pi / 15.
>
> y += np.pi / 20.
>
> im = plt.imshow(f(x, y))
>
> cb = plt.colorbar()
>
> ims.append([im, cb])
>
> ani = animation.ArtistAnimation(fig, ims, interval=50, blit=True,
>
> repeat_delay=1000)
>
> plt.show()
>
>
Which generates the following error

> Traceback (most recent call last):
>   File "/home/stuart/Documents/VAC/sac_anim_axtest.py", line 28, in
> 
> repeat_delay=1000)
>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
> 356, in __init__
> TimedAnimation.__init__(self, fig, *args, **kwargs)
>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
> 304, in __init__
> Animation.__init__(self, fig, event_source=event_source, *args,
> **kwargs)
>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
> 53, in __init__
> self._init_draw()
>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
> 363, in _init_draw
> artist.set_visible(False)
> AttributeError: Colorbar instance has no attribute 'set_visible'
>



I attempted to add the colorbar to a AxesSubplot instance and then draw the
axes in the artist list, however when I add a Axes instance to the artist
list I get a wonderful error:


Traceback (most recent call last):
>   File
> "/usr/lib64/python2.7/site-packages/matplotlib/backends/backend_gtk.py",
> line 122, in _on_timer
> TimerBase._on_timer(self)
>   File "/usr/lib64/python2.7/site-packages/matplotlib/backend_bases.py",
> line 1092, in _on_timer
> ret = func(*args, **kwargs)
>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
> 315, in _step
> still_going = Animation._step(self, *args)
>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
> 177, in _step
> self._draw_next_frame(framedata, self._blit)
>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
> 197, in _draw_next_frame
> self._post_draw(framedata, blit)
>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
> 220, in _post_draw
> self._blit_draw(self._drawn_artists, self._blit_cache)
>   File "/usr/lib64/python2.7/site-packages/matplotlib/animation.py", line
> 235, in _blit_draw
> a.axes.draw_artist(a)
>   File "/usr/lib64/python2.7/site-packages/matplotlib/axes.py", line 1994,
> in draw_artist
> assert self._cachedRenderer is not None
> AssertionError
>

 I also saw the subplots animation example [
http://matplotlib.sourceforge.net/examples/animation/subplots.html],
however that is also based on FuncAnimate, would there be a way to create
something similar for ArtistAnimate?

Thanks
Stuart
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Re: [Matplotlib-users] Build MPL with VS 2008 problem

2011-11-03 Thread Christoph Gohlke 


On 11/3/2011 6:45 AM, Mads Ipsen wrote:
> On 11/02/2011 09:46 PM, Christoph Gohlke wrote:
>> On 11/2/2011 1:39 PM, Mads Ipsen wrote:
>>> On 11/02/2011 09:28 PM, Christoph Gohlke wrote:
 On 11/2/2011 1:11 PM, Mads Ipsen wrote:
> On 11/02/2011 08:43 PM, Michael Droettboom wrote:
>> On 11/02/2011 01:34 PM, Mads Ipsen wrote:
>>> On 11/02/2011 05:50 PM, Michael Droettboom wrote:
 On 11/02/2011 10:53 AM, Mads Ipsen wrote:
> Any clues to why ft2build.h cannot be located. The above docs says
> it should be part of the binary installer.
 The binary for freetype is included with the installer, but the
 headers (needed to build, but not to run) are not. Do you need to
 build matplotlib from source, or just use it?

 Mike
>>> I need to built it from source.
>>>
>>> Mads
>> In that case, you will need to install the development packages for
>> freetype, libpng, libz, and numpy.
>>
>> I'm not a regular Windows user, so I don't know what the best practice
>> is for that these days. Some of the other members on this list can
>> hopefully jump in. There was also a thread on this list about
>> "Building on Windows"   from 08/18/2011 that might be helpful.
>>
>> Mike
>>
>> --
>> RSA(R) Conference 2012
>> Save $700 by Nov 18
>> Register now
>> http://p.sf.net/sfu/rsa-sfdev2dev1
>>
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>>    
>> 
>> 
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> I can't seem to find this thread anywhere. It it really that difficult
> to build on Windows? It most be documented somewhere what the prereqs are?
>
 See   and
 

 Prebuilt static link libraries for msvc compilers are available at
 .

 It seems you are trying to compile from within cygwin, using the include
 files provided by cygwin. That will probably not work.

 Christoph



> Best regards,
>
> Mads
>
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 https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>>> I am building from the VS2008 command prompt. But thanks for the info.
>>> Will have a look.
>>>
>>> Best regards,
>>>
>>> Mads
>> OK. The cygwin in your home path looked suspicious:"c:\cygwin\home\mads
>> ipsen\"
>>
>> Christoph
>>
>> --
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>> Save $700 by Nov 18
>> Register now
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>> 
>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
> Hi,
>
> I am now done with the 32 bit case and am trying to do the same for 64
> bit now.
>
> Here I get the error:
>
> Creating library build\temp.win32-2.7\Release\src\ft2font.lib and object
> buil
> d\temp.win32-2.7\Release\src\ft2font.exp
> ft2font.obj : error LNK2019: unresolved external symbol
> _FT_Set_Transform refere
> nced in function "public: class Py::Object __thiscall
> FT2Font::set_size(class Py
> ::Tuple const &)" (?set_size@FT2Font@@QAE?AVObject@Py@@ABVTuple@3@@Z)
> ft2font.obj : error LNK2019: unresolved external symbol
> _FT_Set_Char_Size refere
> nced in function "public: class Py::Object __thiscall
> FT2Font::set_size(class Py
> ::Tuple const &)" (?set_size@FT2Font@@QAE?AVObject@Py@@ABVTuple@3@@Z)
> ft2font.obj : error LNK2019: unresolved external symbol _FT_Set_Charmap
> referenc
> ed in function "public: class Py::Object __thiscall
> FT2Font::set_charmap(class P
> y::Tuple const &)" (?set_charmap@FT2Font@@QAE?AVObject@Py@@ABVTuple@3@@Z)
> ft2font.obj : error LNK2019: unresolved external symbol
> _FT_Select_Charmap refer
> enced in function "public: class Py::Object __thiscall
> FT2Font::select_charmap(c
> lass Py::Tuple const &)"
> (?select_charmap@FT2Font@@QAE?AVObject@Py@@ABVTuple@3@@
> Z)
>
> I am us

Re: [Matplotlib-users] Build MPL with VS 2008 problem

2011-11-03 Thread Mads Ipsen 

On 11/02/2011 09:46 PM, Christoph Gohlke wrote:


On 11/2/2011 1:39 PM, Mads Ipsen wrote:

On 11/02/2011 09:28 PM, Christoph Gohlke wrote:

On 11/2/2011 1:11 PM, Mads Ipsen wrote:

On 11/02/2011 08:43 PM, Michael Droettboom wrote:

On 11/02/2011 01:34 PM, Mads Ipsen wrote:

On 11/02/2011 05:50 PM, Michael Droettboom wrote:

On 11/02/2011 10:53 AM, Mads Ipsen wrote:

Any clues to why ft2build.h cannot be located. The above docs says
it should be part of the binary installer.

The binary for freetype is included with the installer, but the
headers (needed to build, but not to run) are not. Do you need to
build matplotlib from source, or just use it?

Mike

I need to built it from source.

Mads

In that case, you will need to install the development packages for
freetype, libpng, libz, and numpy.

I'm not a regular Windows user, so I don't know what the best practice
is for that these days. Some of the other members on this list can
hopefully jump in. There was also a thread on this list about
"Building on Windows"  from 08/18/2011 that might be helpful.

Mike

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I can't seem to find this thread anywhere. It it really that difficult
to build on Windows? It most be documented somewhere what the prereqs are?


See   and


Prebuilt static link libraries for msvc compilers are available at
.

It seems you are trying to compile from within cygwin, using the include
files provided by cygwin. That will probably not work.

Christoph




Best regards,

Mads


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I am building from the VS2008 command prompt. But thanks for the info.
Will have a look.

Best regards,

Mads

OK. The cygwin in your home path looked suspicious: "c:\cygwin\home\mads
ipsen\"

Christoph

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Hi,

I am now done with the 32 bit case and am trying to do the same for 64 
bit now.


Here I get the error:

   Creating library build\temp.win32-2.7\Release\src\ft2font.lib and 
object buil

d\temp.win32-2.7\Release\src\ft2font.exp
ft2font.obj : error LNK2019: unresolved external symbol 
_FT_Set_Transform refere
nced in function "public: class Py::Object __thiscall 
FT2Font::set_size(class Py

::Tuple const &)" (?set_size@FT2Font@@QAE?AVObject@Py@@ABVTuple@3@@Z)
ft2font.obj : error LNK2019: unresolved external symbol 
_FT_Set_Char_Size refere
nced in function "public: class Py::Object __thiscall 
FT2Font::set_size(class Py

::Tuple const &)" (?set_size@FT2Font@@QAE?AVObject@Py@@ABVTuple@3@@Z)
ft2font.obj : error LNK2019: unresolved external symbol _FT_Set_Charmap 
referenc
ed in function "public: class Py::Object __thiscall 
FT2Font::set_charmap(class P

y::Tuple const &)" (?set_charmap@FT2Font@@QAE?AVObject@Py@@ABVTuple@3@@Z)
ft2font.obj : error LNK2019: unresolved external symbol 
_FT_Select_Charmap refer
enced in function "public: class Py::Object __thiscall 
FT2Font::select_charmap(c
lass Py::Tuple const &)" 
(?select_charmap@FT2Font@@QAE?AVObject@Py@@ABVTuple@3@@

Z)

I am using the

  msvcr90-x64

version of the libraries downloaded from

  http://www.lfd.uci.edu/~gohlke/pythonlibs/#matplotlib

Wrong libraries?

Bestregards,

Mads

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Re: [Matplotlib-users] Certain annotation parameters cause strange error

2011-11-03 Thread Jae-Joon Lee 
I believe I fixed this in this pull request.

https://github.com/matplotlib/matplotlib/pull/566

Unfortunately, I don't think there is a easy workaround other than not
using the "fancy" arrow style.

Regards,

-JJ



On Sun, Oct 30, 2011 at 1:51 PM, Brendan Barnwell  wrote:
>        I encountered a strange error when trying to put some annotations on
> a graph.  I was able to simplify it to this:
>
> pyplot.plot([1, 2, 3, 4], [0, -1, -2, 8])
> pyplot.annotate("Blah", xy=(2, 2), xytext=(-20,-20),
> textcoords='offset points',
>                 bbox=dict(boxstyle='round,pad=0.5'),
>                 arrowprops=dict(arrowstyle='fancy',
> connectionstyle='arc3,rad=0'))
>
> On my system (matplotlib 1.1.0 with Python 2.6 on Windows XP), this
> causes a long traceback culminating in
>
> File "C:\Program Files\Python\lib\site-packages\matplotlib\bezier.py",
> line 129, in find_bezier_t_intersecting_with_closedpath
>     raise ValueError("the segment does not seemed to intersect with
> the path")
>
>        Increasing the xytext coordinates (in absolute value), to for
> instance (-50, -50) works with no error, and it also works without the
> special bbox style.  Just guessing from the error message, it looks
> like certain combinations of fancy patches are causing problems
> because the shapes don't intersect in the way the drawing code assumes
> they should.
>
>        I don't see anything in the docs about such edge cases, so this looks
> like a bug.  Judging from the way that small tweaks to the code can
> cause the error to disappear, I imagine it could be tricky to fix, but
> at the least there should probably be a warning in the docs that some
> kinds of anootation boxes won't work with some kinds of arrows when
> the text is too close to the annotated point.
>
>        Any ideas?
>
> Thanks.
> --
> Brendan Barnwell
> "Do not follow where the path may lead.  Go, instead, where there is
> no path, and leave a trail."
>    --author unknown
>
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Re: [Matplotlib-users] PyPI has version 1.0.1

2011-11-03 Thread John Hunter 




On Nov 2, 2011, at 10:47 PM, Benjamin Root  wrote:

> 
> 
> On Wednesday, November 2, 2011, John Hunter  wrote:
> > On Wed, Nov 2, 2011 at 10:02 PM, Benjamin Root  wrote:
> >>> I just noticed that PyPI lists matplotlib 1.0.1 as the latest version, so
> >>> pip and easy_install install version 1.0.1 instead of version 1.1.0.  Can
> >>> somebody update the listing at the PyPI site?
> >>>
> >>> Thanks,
> >>> Scott
> >>
> >> And if somebody knows how, let me know so I can add it to the notes for the
> >> developer section?
> >
> > I updated pypi, so please let us know if there are any more problems
> >
> 
> So the instruction should be to remind John Hunter to update the entry in 
> PyPi? Got it.
> 

Even better, it should be:

1) update the release notes in the devel docs

2) give Ben access to the pypi acct. 

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