Drawing filled circles (discs)

Community matplotlib-users
1

sidimok <sidimok@...287...> writes:

I'm using matplotlib to draw (from matplotlib.Patches import Circle) filled
circles (disks) from a formatted data file, and would give each disk a
color relative to a variable, as done by the "scatter" function.

Here's one way to do it:

2

Jouni K. Seppänen wrote:

sidimok <sidimok@...287...> writes:

I'm using matplotlib to draw (from matplotlib.Patches import Circle)
filled
circles (disks) from a formatted data file, and would give each disk a
color relative to a variable, as done by the "scatter" function.

Here's one way to do it:

#!/usr/bin/env python

import matplotlib
from matplotlib.patches import Circle
import pylab

def myscatter(ax, colormap, x, y, radii, colors):
    for x1,y1,r,c in zip(x, y, radii, colormap(colors)):
        ax.add_patch(Circle((x1,y1), r, fc=c))

fig=pylab.figure()
ax=fig.add_subplot(111)

myscatter(ax, matplotlib.cm.jet,
          pylab.rand(20), pylab.rand(20), 0.1*pylab.rand(20),
pylab.rand(20))

ax.axis('equal')
pylab.show()

Hi!

It works just fine, however the colorbar I'm getting with the following
commands is very tiny.

norm = matplotlib.colors.Normalize(vmin=x[0], vmax=x[-1]) # just an example

cb = matplotlib.colorbar.ColorbarBase(ax, cmap=matplotlib.cm.jet, norm=norm)

Any idea?
Thanks guys.

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