[Matplotlib-users] Y-Axis scaling bug?

[Karl-Heinz G. <gl...@kh...>]

Hallo,

it seems to me that the scaling of the Y-axis gets wrong if the
y-values are below 1e-4. (Release 0.61.0, OS=Windows 2000 SP4, Python 
2.3.4, actual wxPython Release)
The previous release did not show this behavior.

Example Code:

import wx
import matplotlib
matplotlib.use('WXAgg')
#with TK it is the same...

from matplotlib.matlab import *

t1 = arange(0.0, 5.0, 0.1)

figure(1)
subplot(211)
plot(t2, cos(2*pi*t2), 'r')
grid(1)
ylabel('As expected')
title('Y-axis scaling OK')

subplot(212)
plot(t2, 1e-4*cos(2*pi*t2), 'r')
ylabel('A lot of zeros')
title('Y-axis scaling wrong, should be 1e-4')
grid(1)
show()

Here you can find a screenshot (about 50 kByte) at

http://home.arcor.de/glahe/Screenshot.jpg



Best regards,

Kalle.