matplotlib-users Mailing List for matplotlib

Hi all,
I'm pleased to announce that the book about Matplotlib has been
published. More info at:
 http://sandrotosi.blogspot.com/2009/11/matplotlib-for-python-developers.html
Regards,
-- 
Sandro Tosi (aka morph, morpheus, matrixhasu)
My website: http://matrixhasu.altervista.org/
Me at Debian: http://wiki.debian.org/SandroTosi

Hi,
I would like to have a different marker facecolor in the legend that in
the plot. Is there any way to change this color?=20
In more detail my problem is the following. I plotted 6 dataset. They
are divided in 2 groups; one with blue and the other with red color.
In each group I have used 3 different markers. I have annotated the
meaning of the color in the plot, so I don't need a legend with 6 lines.
I only need 3, but I would like that the markers in this plot will be
empty (markerfacecolor=3Dwhite). Is it possible?
Best regards,
Zunbeltz
-- 
Zunbeltz Izaola

Le 18 novembre 2009 17:24, Michael Droettboom <md...@st...> a écrit :
>
> This is a bug -- but it has a fairly straightforward fix: to use Sphinx's
> "include" directive rather than roll our own as we currently do. This has
> been fixed in SVN r7972. plot-directive now takes an "encoding" option,
> exactly like the Sphinx include directive. It does not do automatic
> encoding detection (meaning it ignores the "# coding: latin1" comments),
> just as the Sphinx include directive does.
>
Hello Michael,
thank you for your fast reply and action. I just tried with the version from
trunk (r7978) and I still have an encoding problem on the same test case. It
seems to happen when the file is ran (to produce the figure) rather. I do
not understand what is happenning, I would have expected imp to proprely
guess the encoding.
Could you tell me if you have the same problem ? Do you have any idea of
what is going on ?
Thanks !
$ git clone git://github.com/sbarthelemy/SphinxEncoding.git
$ cd SphinxEncoding/
$ make html
sphinx-build -b html -d _build/doctrees . _build/html
Making output directory...
Running Sphinx v0.6.2
loading pickled environment... not found
building [html]: targets for 1 source files that are out of date
updating environment: 1 added, 0 changed, 0 removed
/home/barthelemy/.local/lib/python2.6/site-packages/matplotlib/sphinxext/plot_directive.py:273:
UserWarning: Exception running plot ./fileutf8.py
Traceback (most recent call last):
 File
"/home/barthelemy/.local/lib/python2.6/site-packages/matplotlib/sphinxext/plot_directive.py",
line 270, in render_figures
 run_code(plot_path, function_name, plot_code)
 File
"/home/barthelemy/.local/lib/python2.6/site-packages/matplotlib/sphinxext/plot_directive.py",
line 182, in run_code
 "__plot__", fd, fname, ('py', 'r', imp.PY_SOURCE))
 File "fileutf8.py", line 2, in <module>
 print(u"accent aigus é")
UnicodeEncodeError: 'ascii' codec can't encode character u'\xe9' in position
13: ordinal not in range(128)

Hi Jeff,
I finally had a chance to try this. I can't get it to work but I think 
I'm close - for some reason, the way I'm creating the geos polygons 
seems to always intersect the boundary polygon. It's hard to think of a 
good minimal example for this so I've attached an example that 
illustrates the problem - it tries to plot an icosahedron on the 
Mollweide plot.
Gary R.
Jeff Whitaker wrote:
> Gary Ruben wrote:
>> I'm plotting a coverage map of a sphere using the Mollweide plot in
>> basemap. The attachment is an example that is produced by sending an
>> array of polygons (one polygon per row described as four corners, one
>> per column) described using polar (theta) and azimuthal (phi) angles to
>> the following function. As a kludge, I discard any polygons that cross
>> the map boundary, but this produces artefacts and it would be better to
>> subdivide these and keep the parts. I was wondering whether there's a
>> function I missed that allows me to add polygons and performs the split
>> across the map boundary.
>>
>> Gary R.
> 
> Gary: You might be able to use the _geoslib module to compute the 
> intersections of those polygons with the map boundary. I do a similar 
> thing with the coastline polygons in the _readboundarydata function. 
> The _boundarypolyll and _boundarypolyxy instance variables have the 
> vertices of the map projection region polygons in lat/lon and projection 
> coords. You could do somethig like this:
> 
> from mpl_toolkits.basemap import _geoslib
> poly = _geoslib.Polygon(b) # a geos Polygon instance 
> describing your polygon)
> b = self._boundarypolyxy.boundary
> bx = b[:,0]; by= b[:,1]
> boundarypoly = _geoslib.Polygon(b) # a geos Polygon instance 
> describing the map region
> if poly.intersects(boundarypoly):
> geoms = poly.intersection(boundarypoly)
> polygons = [] # polygon intersections to plot.
> for psub in geoms:
> b = psub.boundary # boundary of an intersection
> polygons.append(zip(b[:,0],b[:,1]))
> 
> -Jeff