matplotlib-users Mailing List for matplotlib

Hello -
I searched the mailing list, but couldn't find an answer.
I want to vary the color (or width for that matter) of a line according to=
=20
an additional array of values. Very much like the 's' array in scatter plot=
.
In this fashion every (x0,y0), (x1,y1) segment has either a different color=
=20
or width.
Can this be done easily, or should I just loop through my x,y array and cal=
l=20
plot every time with a different color/width?
Thanks,
Mark

>>>>> "Darren" == Darren Dale <dd...@co...> writes:
 Darren> I am making a polar plot, and the ticklabels are
 Darren> overlapping the plot a little bit. I tried to compensate
 Darren> by increase the tick.major.pad rc setting, but it does not
 Darren> seem to be respected.
 Darren> Any suggestions on where to look for this?
See ax.set_thetagrids, where ax is PolarAxes instance. In
particular the "frac" arg. Note that your approach would be more
consistent (eg respecting the tick pad) but this should work.
JDH

I am making a polar plot, and the ticklabels are overlapping the plot a little 
bit. I tried to compensate by increase the tick.major.pad rc setting, but it 
does not seem to be respected.
Any suggestions on where to look for this?
from matplotlib import rcParams
rcParams['tick.major.pad']=10
rcParams['tick.labelsize']=16
from pylab import cos, figure, frange, pi, polar, sin, show
figure(figsize=(4,4))
ang = frange(0,10,.01)*2*pi
polar(ang, sin(ang)*cos(ang))
show()
 
Darren

The basemap add-on toolkit for matplotlib allows you to plot your data 
on a wide variety of map projections, with coastlines and political 
boundaries.
For an example of what it can do, see See 
http://www.scipy.org/wikis/topical_software/Maps.
This is mainly a bugfix release, with one significant new feature - the 
ability to plot data in ESRI shapefiles (thanks to pyshapelib by 
Bernhard Herzog).
Download it at http://sourceforge.net/projects/matplotlib/
-Jeff
-- 
Jeffrey S. Whitaker Phone : (303)497-6313
NOAA/OAR/CDC R/CDC1 FAX : (303)497-6449
325 Broadway Web : http://www.cdc.noaa.gov/~jsw
Boulder, CO, USA 80305-3328 Office: Skaggs Research Cntr 1D-124

N. Volbers schrieb:
> Hello everyone,
> 
> I intended to use the capabilities of mathtext as presented on the 
> matplotlib example page and the tutorial page. The examples given are 
> quite clear; yet they always assume that you pass the string that should 
> be interpreted as raw string, e.g.
> 
> r'$\sum_{i=0}^\infty x_i$'
> 
> However, in my application the user types the labels/title/whatever text 
> in a gtk entry field and this string, which is a unicode string, is then 
> passed on to the matplotlib OO interface. And as it is right now, I 
> just get the text as it is, so no fancy sum or infinity sign.
> 
> I'd appreciate your help,
> 
> Niklas.
> 
> 
Sorry to have bothered you with this!
There was no problem at all with the string passing; my problem was 
somehow different, and now mathtext works just fine. Great!
So just forget about my question ;-)
Niklas.

Hi all,
The title is not illustrated but for what reason ?
Nils

>>>>> "cglackin" == cglackin <cgl...@lk...> writes:
 cglackin> of the svg header as 1. below. If I adjust the header
 cglackin> as in 2. with a viewBox setting I get an image that
 cglackin> will scall to the browser window, and is centered. Is
 cglackin> there a way to do this from with in Matplotlib? 
Should be pretty easy. Take a look at
matplotlib/backends/backend_svg.py and submit a patch.
Thanks!
JDH

>>>>> "Les" == Les Schaffer <sch...@op...> writes:
 Les> John Hunter wrote:
 >> Try installing the latest release (0.83.2), removing your
 >> ~/.matplotlib/tex.cache, and rerunning your script.
 Les> i still get the problem:
Have you satisfied the requirements for usetex, eg, what does this
report
 > dvipng --version
JDH

Hello everyone,
I intended to use the capabilities of mathtext as presented on the 
matplotlib example page and the tutorial page. The examples given are 
quite clear; yet they always assume that you pass the string that should 
be interpreted as raw string, e.g.
r'$\sum_{i=0}^\infty x_i$'
However, in my application the user types the labels/title/whatever text 
in a gtk entry field and this string, which is a unicode string, is then 
passed on to the matplotlib OO interface. And as it is right now, I 
just get the text as it is, so no fancy sum or infinity sign.
I'd appreciate your help,
Niklas.

>>>>> "W" == W Pessenhofer <w.p...@tu...> writes:
 W> Hi, I really like the possibility to create labels with tex
 W> support. Unfortunately, using this feature, svg export seems
 W> to be no longer available. This is sad, because creating svg's
 W> was one of my major reasons using matplotlib. Using latex most
 W> of the time, it was possible to create high quality vector
 W> based images with the possibility to change them later
 W> (e.g. with inkscape). I use this feature mostly for language
 W> changings of labels or titles.
As you've discovered, tex support has not been implemented yet for the
svg backend. Feel free to submit a support request on the sf site.
Perhaps the path of least resistance would be to embed the tex
graphics as images, just as we do for agg, since SVG already has image
support.
JDH

>>>>> "Les" == Les Schaffer <sch...@op...> writes:
 >> Have you satisfied the requirements for usetex, eg, what does
 >> this report
 >> 
 >> > dvipng --version
 
 Les> ahem ... all better after 'apt-get install dvipng'
 Les> thnx
No problem. As penance, you can write the patch to texmanager.py or
__init__,py (on the usetex rc param check) that issues a proper
warning if dvipng is not installed. I personally think it should be
made in matplotlib.texmanager.TexManager.get_dvipng_version. Frankly,
I don't understand why the current implementation failed 
 def get_dvipng_version(self):
 if self.dvipngVersion is not None: return self.dvipngVersion
 sin, sout = os.popen2('dvipng --version')
 for line in sout.readlines():
 if line.startswith('dvipng '):
 self.dvipngVersion = line.split()[-1]
 return self.dvipngVersion
 raise RuntimeError('Could not obtain dvipng version')
OK, on a second read of the texmanager code, I do understand.
Apparently the error is that this function is not called by make_png.
I think all that is needed is to add a version check to make_png
which calls get_dvipng_version which will raise if dvipng is not
defined. Send patches to me, to this thread, to the devel list, or to
the sourceforge site.
Thanks!
JDH