matplotlib-users Mailing List for matplotlib

Is this really the current solution to building matplotlib on OSX,
installing a new compiler and hacking the python Makefile?

I was able to build matplotlib 0.91.2 just fine on OSX, sometime
around March I checked out the truck to fix a bug and discovered I
couldn't build the svn version.  Matplotlib is the only package with a
dependency on gcc 4.2, all the other packages I build, numpy, scipy,
ipython, etc... build with gcc 4.0.  Why do you have this dependency?
Is there an easier solution?

I'm reluctant to upgrade to gcc 4.2 and loose the ability to build
other packages I need.

Chris

On Thu, May 29, 2008 at 4:51 AM, Joshua Lippai <dis...@gm...> wrote:
> I've consistently been able to build matplotlib on OS X. Just make
> sure you have all the dependencies installed. Personally, I have lbpng
> and whatnot installed in /usr/local instead of /usr/X11. I don't know
> if that'll help. Also, I use the GCC 4.2 that Apple has available for
> download on developer.apple.com. Then you just change the Makefile in
> the /Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/config/
> directory to not use Wno-long-double or no-cpp-precomp. I also took
> out all the ppc arch flags since it was causing some issues there with
> my versions of libpng and whatnot technically not being universal
> binaries. If you don't want to build univeral binary versions of your
> dependencies or use the ones alread provided in /usr/X11 (which are
> universal I think), you should make Python only build for your
> architecture, which is what I did.
>
> My only issue with matplotlib thusfar seems to be the inability to do
> the plot3d examples from the scipy website, but I'm told that stuff is
> officially unsupported anyway.
>
> Josh
>

-- 
Christopher Burns
Computational Infrastructure for Research Labs
10 Giannini Hall, UC Berkeley
phone: 510.643.4014
http://cirl.berkeley.edu/

Bryan,

Thanks for pointing this out.  Mike D. has made a change in the svn 
trunk to restore the automatic closing of polygons made with the 
patches.Polygon constructor, which is used by the fill command.

Eric

Bryan Fodness wrote:
> It seems like it does not connect the last point to the first point.  
> This also happens with the matplotlib.patches Polygon.
>  
>  
> from pylab import fill, xlim, ylim, savefig
> x1, x2, y1, y2 = -4, 4, -4, 4
> fill([x1,x2,x2,x1], [y1,y1,y2,y2], fc='None', ec='r')
> xlim(-5,5)
> ylim(-5,5)
> savefig('edge_test')
> 
> 
> On Thu, Jun 5, 2008 at 1:18 AM, Eric Firing <ef...@ha... 
> <mailto:ef...@ha...>> wrote:
> 
>     Bryan Fodness wrote:
> 
>         I just upgraded to 0.98.0 and recreated a few graphs.  I am
>         missing parts of the edges of a fill and polygon.  Any suggestions?
> 
> 
>     Please post an illustrative script, as simple as possible.
> 
>     Eric
> 
> 
> 
> 
> -- 
> "The game of science can accurately be described as a never-ending 
> insult to human intelligence." - João Magueijo

I just read your question more closely -- that you want to multiply an 
array by an array that describes the polygon.  Do you mean the array of 
vertices that describe the polygon or something like a 2D rasterization 
(image) of the polygon?

I perhaps wrongfully assumed you just wanted to do hit-testing on a 
polygon.  What I was thinking (and this still may be relevant to your 
problem) was:

====

from matplotlib.path import Path

# Create a unit square
path = Path([[0, 0], [1, 0], [1, 1], [0, 1], [0, 0]])

# Test for some points that are inside and outside of the square
assert path.contains_point([0.5, 0.5])
assert not path.contains_point([1.5, 0.5])

====

If you want to get an image of the polygon, it's probably theoretically 
doable, but won't be straightforward.  It will involve working directly 
with the Agg backend, I think.  Let me know your use case is, and we can 
step through that.  Perhaps there's another way to achieve the same end 
result that won't require as much wrestling.

Cheers,
Mike

Bryan Fodness wrote:
> Could you help me set this up?  I am still fairly new to python.
>  
> On Thu, Jun 5, 2008 at 1:05 PM, Michael Droettboom <md...@st... 
> <mailto:md...@st...>> wrote:
>
>     If you're using 0.98, you can create a Path object (see path.py)
>     from your polygon and then use the point_in_polygon method to test
>     whether a point is inside or outside the polygon.  This doesn't
>     require rendering the polygon at all and works entirely in vector
>     space.  Let me know if you need help with the details.
>
>     Cheers,
>     Mike
>
>     Bryan Fodness wrote:
>
>         Is there a way to get the underlying array that the fill
>         function uses to graph a polygon?
>          This is assuming that it uses an array.  I would like to be
>         able to multiple an array by an array that describes the
>         polygon (one if inside the polygon and zero if outside)
>          
>
>         -- 
>         "The game of science can accurately be described as a
>         never-ending insult to human intelligence." - João Magueijo
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>
>     -- 
>     Michael Droettboom
>     Science Software Branch
>     Operations and Engineering Division
>     Space Telescope Science Institute
>     Operated by AURA for NASA
>
>
>
>
> -- 
> "The game of science can accurately be described as a never-ending 
> insult to human intelligence." - João Magueijo 

-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

Johan Mazel wrote:
> Hi
> I can't find any deb package of matplotlib in the url that you gave
> me. The sources are there but I'm not interested in the sources since
> I can find them on the official website of matplotlib.
> Is there any problem ?
> Thanks for the answer by the way.
> Johan mazel
They are there.

For i386:

http://debs.astraw.com/hardy/python-matplotlib_0.98.0-0ads2_i386.deb

For amd64:

http://debs.astraw.com/hardy/python-matplotlib_0.98.0-0ads2_amd64.deb

For all arch:

http://debs.astraw.com/hardy/python-matplotlib-data_0.98.0-0ads2_all.deb
http://debs.astraw.com/hardy/python-matplotlib-doc_0.98.0-0ads2_all.deb

Hi
I can't find any deb package of matplotlib in the url that you gave me. The
sources are there but I'm not interested in the sources since I can find
them on the official website of matplotlib.
Is there any problem ?
Thanks for the answer by the way.
Johan mazel

2008/6/3 Andrew Straw <str...@as...>:

> I have .debs for Ubuntu Hardy available at http://debs.astraw.com/hardy/
> . Note that these packages don't follow all Debian/Ubuntu guidelines and
> are of lower quality than the official packages, which I recommend over
> these. Nevertheless, I've packaged these things up for my personal and
> my laboratory's use, and anyone is welcome to use them, too. As always,
> please let me know if you find any bugs.
>
> (The source .dsc packages are also available at the same site, and might
> work with recompilation for Debian testing and possibly older Ubuntu
> versions.)
>
> -Andrew
>
> Johan Mazel wrote:
> > Hi
> > I'd like to know when the latest packages in *.deb or *.rpm (from the
> > 0.98.0 version) will be available in the repositories ?
> > If you have any addresses of "custom" repositories where I could get
> > this package, it would be nice too.
> >
> > I prefer to have a package installed than installed the software
> > myself since I think it would be easier for me if I want to uninstall it.
> >
> > Thanks.
> > Johan Mazel
> > ------------------------------------------------------------------------
> >
> > -------------------------------------------------------------------------
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> > Defy all challenges. Microsoft(R) Visual Studio 2008.
> > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
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> >
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> >
>
>

Is there a way to get the underlying array that the fill function uses to
graph a polygon?

This is assuming that it uses an array.  I would like to be able to multiple
an array by an array that describes the polygon (one if inside the polygon
and zero if outside)



-- 
"The game of science can accurately be described as a never-ending insult to
human intelligence." - João Magueijo

It seems like it does not connect the last point to the first point.  This
also happens with the matplotlib.patches Polygon.


from pylab import fill, xlim, ylim, savefig
x1, x2, y1, y2 = -4, 4, -4, 4
fill([x1,x2,x2,x1], [y1,y1,y2,y2], fc='None', ec='r')
xlim(-5,5)
ylim(-5,5)
savefig('edge_test')


On Thu, Jun 5, 2008 at 1:18 AM, Eric Firing <ef...@ha...> wrote:

> Bryan Fodness wrote:
>
>> I just upgraded to 0.98.0 and recreated a few graphs.  I am missing parts
>> of the edges of a fill and polygon.  Any suggestions?
>>
>>
> Please post an illustrative script, as simple as possible.
>
> Eric
>



-- 
"The game of science can accurately be described as a never-ending insult to
human intelligence." - João Magueijo

Bryan Fodness wrote:
> I just upgraded to 0.98.0 and recreated a few graphs.  I am missing 
> parts of the edges of a fill and polygon.  Any suggestions?
> 

Please post an illustrative script, as simple as possible.

Eric