[Matplotlib-users] Marker positioning accuracy

[João L. S. <js...@fc...>]

The positioning of markers seems a bit off, especially when a line is 
moved around with the pan and zoom tool. They don't follow the line they 
are in, and seem to follow a much lower resolution line. Try the 
following example, and use the pan and zoom tool to move the lines around.

mpl svn rev 7310 / Ubuntu 9.04 / GTKAgg

Regards,
João Silva

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

import numpy as np
import matplotlib.pyplot as plt

delta = 0.2
x = np.arange(-5,5,0.05)
plt.plot(x,x,marker="o")
plt.plot(x,x+delta,"g",lw=1.5)
plt.plot(x,x-delta,"g",lw=1.5)
ax = plt.gca()
ax.set_xlim((-4.25,4.7))
ax.set_ylim((-5.5,5.1))
plt.show()

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