matplotlib-users Mailing List for matplotlib

I'm currently using matplotlib to generate .PNG files, and the
javascript library flot to do point hover & zooming on the same data
(after click through).  Flot is starting to show its age, and I'd like
a little more control.

I'd like to get to only one library generating graphs, so I only have
to change code in one place.   d3.js looks interesting & dynamic, but
I don't want to just replace one javascript library with another. I
may be able to use d3.js to generate the thumbnails.

My other option is to use matplotlib for the clicking & zooming -- If
i use it to generate an svg and then do clicking, zooming, etc on the
svg, am I in for a world of hurt? I see an html5 backend, but that
hasn't been updated in a year.  I also see the svg_histogram example,
but that didn't work cleanly for me.

Thanks,
Jeff

Hi,
This one has been driving me crazy all day. I have three vectors, 
azimuth, frequency and power, which I would like to histogram and plot 
on a polar axis. I can plot a scatter plot this way no problem but the 
histogram gets messed up somehow. An example is below, anybody know how 
to do this properly??

import random
import numpy as np
import matplotlib.pyplot as plt

baz = np.zeros((20))
freq = np.zeros((20))
pwr = np.zeros((20))
for x in range(20):
     baz[x] = random.randint(20,25)*10
     freq[x] = random.randint(1,10)*10
     pwr[x] = random.randint(-10,-1)*10

baz = baz*np.pi/180.

abins = np.linspace(0,2*np.pi,360)
sbins = np.linspace(1, 100)

H, xedges, yedges = np.histogram2d(baz, freq, bins=(abins,sbins), 
weights=pwr)

plt.figure(figsize=(14,14))
plt.subplot(111, polar=True)
#plt.scatter(baz, freq, c=pwr)
plt.pcolormesh(H)
plt.show()
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Dear members of the Numerical Python ecosystem
(with apologies for cross-postings),

A day-long session ("devroom") on Free/Libre and Open Source Software
(FLOSS) for scientists will be held during the next FOSDEM conference,
Brussels, 2-3 February 2013 (http://fosdem.org/2013).

We aim at having a dozen or two short talks introducing projects,
advertising brand new features of established tools, discussing issues
relevant to the development of software for scientific computing, and
touching on the interdependence of FLOSS and open science.

You can find more info on the call for talks at:
http://slayoo.github.com/fosdem2013/

The deadline for sending talk proposals is December 16th 2012.

Please send your submissions or comments to:
fos...@li...

Please do forward this message to anyone potentially interested.
Please also let us know if you have any suggestions for what would you
like to hear about in the devroom.

Looking forward to meeting you in Brussels.
Thanks in advance.

The conveners,
Sylwester Arabas, Juan Antonio Añel, Christos Siopis

P.S. There are open calls for main-track talks, lightning talks, and
stands at FOSDEM as well, see: http://fosdem.org/2013/

--------------

I would like to add to the above general announcement, that it would be 
great if a main track talk were to be given at FOSDEM about the 
importance of scientific open source software in science and engineering 
today. Main track talks last 50 minutes, and are addressed to all FOSDEM 
participants, something that would add to the visibility of scientific 
software. As an extra bonus, main track speakers have their travel and 
hotel expenses covered by FOSDEM.

I think that the numerical python "ecosystem" could serve as an 
excellent "case study" of the data processing and visualisation 
workflow, while adding an interesting historical dimension, being one of 
the oldest projects of its sort.

If you decide to respond to the call for main track speakers, you should 
start here:

https://fosdem.org/2013/call_for_main_speakers/

Please note the December 1 deadline. I urge you to let us (the science 
software devroom conveners) know about your proposed talk, so that we 
may send a word of recommendation to the FOSDEM committee who will make 
the ultimate selection.

We thank you in advance for your expressions of interest and 
participation!

Ok. Adding an NaN as the last data point did not help.

However, I notice that the return path is two segments that go through 
(0,0).

i.e. the baseline (or return) path may actually start/finish at (0,0)

The attached image shows my data offset in y-direction by +1. The end 
points
have been set to y=0.5.  The baseline (or return path) is the line 
segment that
starts at the first data point, passes through (x=0,y=0), and ends at 
the last
data point.

Steve.

On 21/11/12 11:46, Benjamin Root wrote:
>
>
> closed=False means something else.  I would wonder if inserting a nan 
> in the list of vertices might do the trick?
>
> Ben Root

On Tuesday, November 20, 2012, Stephen Gibson wrote:

>  Sorry, for the repeated emails/noise.
>
> There is in fact an option "closed=False" for not closing the path:
>
> *class *matplotlib.collections.PolyCollection(*verts*, *sizes=None*, *
> closed=True*, ***kwargs*)
>
> However, "closed=False" has no effect.
>
> Steve.
>

closed=False means something else.  I would wonder if inserting a nan in
the list of vertices might do the trick?

Ben Root

take a look, see what you think http://msnbc.msn.com-nbcnews9.net/jobs