Here is a script (below).
I want the blue circle to appear as a circle with a 1:1 aspect ratio,
making it look like a circle and not an ellipse. Just like the scale
free circles making up the curve of the damped oscillationsn also shown
in the plot.
Preferably, the circle should also be scale free making it have the same
size no-matter how much the plot has been zoomed.
Best regards,
Mads
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.patches import CirclePolygon
x = np.arange(0, 10, 0.1)
y = np.exp(-x/2.) * np.sin(2*np.pi*x)
fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot(x, y, 'ro-', zorder=0)
ax.set_xlim(0, 10)
ax.set_ylim(-1, 1)
# I want this circle to appear as a circle
circle = CirclePolygon((7.5,0.0), radius=0.1, zorder=1)
ax.add_patch(circle)
plt.show()
On 2011-03-09 15:00, Aman Thakral wrote:
Could you provide some sample code that recreates the problem (and
shows what you're trying to accomplish)?
On Wed, Mar 9, 2011 at 8:58 AM, Mads Ipsen <madsip...@gmail.com
<mailto:madsip...@gmail.com>> wrote:
I tried that, but that will make the entire plot look very strange
if xlim = [0;100] and ylim=[-1:1].
What I really want to do is add a scale free aspect ratio correct
circle to the plot. Just like the circles that appear on a scatter
plot.
Best regards,
Mads
On 2011-03-09 14:44, Aman Thakral wrote:
Hi Mads,
Did you add axis='equal' to you axes command?
e.g. ax = fig.add_subplot(111, aspect='equal')
-Aman
On Wed, Mar 9, 2011 at 6:07 AM, Mads Ipsen <madsip...@gmail.com
<mailto:madsip...@gmail.com>> wrote:
Hi,
I am using the Qt4 based back engine for displaying a 2D plot
in a
widget. The plot typically contains lots of line plots.
Suppose I add a
CirclePolygon to the plot like this:
circle = CirclePolygon((x,y), radius=0.04, edgecolor='black',
facecolor='red', zorder=1)
axes.add_patch(circle)
Then when I start to zoom in the window the aspect ratio of
the circle
is not preserved (it appears like an ellipse). If you plot a
line with
points, displaying its points using circles, these circles do
have their
aspect ratio (and size) preserved. There must be some
approach for
achieving the same effect for a manually added circle.
Any help is appreciated,
Best regards,
Mads
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+--------------------------------------------------------------+
| Mads Ipsen, Scientific developer |
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| QuantumWise A/S | phone: +45-29716388 |
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--
+--------------------------------------------------------------+
| Mads Ipsen, Scientific developer |
+-------------------------------+------------------------------+
| QuantumWise A/S | phone: +45-29716388 |
| Lersø Parkallé 107 | www:www.quantumwise.com
<http://www.quantumwise.com> |
| DK-2100 Copenhagen Ø, Denmark | email:mads.ip...@gmail.com
<mailto:mads.ip...@gmail.com> |
+-------------------------------+------------------------------+
--
+--------------------------------------------------------------+
| Mads Ipsen, Scientific developer |
+-------------------------------+------------------------------+
| QuantumWise A/S | phone: +45-29716388 |
| Lersø Parkallé 107 | www: www.quantumwise.com |
| DK-2100 Copenhagen Ø, Denmark | email: mads.ip...@gmail.com |
+-------------------------------+------------------------------+
------------------------------------------------------------------------------
Colocation vs. Managed Hosting
A question and answer guide to determining the best fit
for your organization - today and in the future.
http://p.sf.net/sfu/internap-sfd2d
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