Hi, thanks Ryan for the interest. Here is a short script to produce the data. The method also breaks if I change too much the radius of the sphere or the size at which they are plotted.
I am using:
Python 2.5.4
Matplotlib 0.98.5.2
Regards,
Code follows:
###############################################################
#!/usr/bin/env python
from matplotlib import pyplot as plt
import matplotlib.mlab as mlab
import numpy as np
NN=9
xmin=0.1
xmax=3.5
x= np.arange(xmin,xmax,.10)
y=np.square(np.sin(x))
# Creamos la figura
fig = plt.figure()
ax = fig.add_subplot(111)
ax.set_yscale('log')
# Sphere radius (also radius and centers for all inner circles)
radio=.1
rads= radio*(1.  np.arange(0,NN)/(1.*NN))
dl= np.array([(radior) for r in rads])*radio
ylimits=(0.01,1.2)
for x1,y1 in zip(x,y):
ax.scatter(x1*(1+dl),y1+(y1*dl), cmap=plt.cm.Blues, c=rads,s=2500*rads, edgecolors='none')
ax.set_xlim(xmin,xmax)
ax.set_ylim(ylimits)
plt.show()
###############################################################
 On Mon, 4/27/09, Ryan May <rmay31@...> wrote:
> From: Ryan May <rmay31@...>
> Subject: Re: [Matplotlibusers] custom symbols for scatter
> To: fiolj@...
> Cc: matplotlibusers@...
> Date: Monday, April 27, 2009, 5:04 PM
> On Mon, Apr 27, 2009 at 7:50 AM, Juan Fiol
> <fiolj@...> wrote:
>
> > Hi, I am trying to put a sphere (rather than circles
> or disks) as markers
> > for a
> > plot. I am a newbiew so I tried the poor man approach:
> I plotted several
> > circles
> > one over the other for each point to mimic a sphere
> (looking it from very
> > far).
> > It kind of worked, except that all are not exactly the
> same and they
> > distort
> > when I change the aspect ratio of the plot. I am
> attaching two figures
> > to show what I mean.
> > I looked around in the mailing list and searched all
> over the web but did
> > not
> > find nothing mentioned. Any help is appreciated.
> >
>
> Can you post a selfcontained version of your code so that
> we can see
> exactly how you make the spheres? You can just use
> random/hardcoded numbers
> for the data in the plot.
>
> Ryan
>
> 
> Ryan May
> Graduate Research Assistant
> School of Meteorology
> University of Oklahoma
