On Wednesday, June 30, 2010 06:24:12 pm Philippe Crave wrote:
> Hello,
>
> I have a subplot with 4 lines.
> I display the legend.
> I can remove a line easily with something like del(self.ax.lines[n]).
> But how can I remove the line in the legend ?
>
> I found that I can remove all the lines, add news ones, but all the
> lines (new and deleted) remain in the legend.
Hi Philippe,
I think you simply can set up a new legend replacing the old one. I attached
an example script of that.
Kind regards,
Matthias
import numpy as np
from matplotlib import pyplot as plt
x = np.linspace(0.0, 2*np.pi, 100)
plt.ion()
ax = plt.gca()
ax.plot(x, +np.sin(x), label='sin(x)')
ax.plot(x, +np.cos(x), label='cos(x)')
ax.plot(x, -np.sin(x), label='-sin(x)')
ax.plot(x, -np.cos(x), label='-cos(x)')
plt.legend()
raw_input("press >Enter< to continue -> ")
# remove some lines
ax.lines.pop(-1)
ax.lines.pop(2)
# set up a new legend
plt.legend()
plt.ioff()
plt.show()
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