I’m trying to animate a bar plot. Consider the following bit of code (which works fine):
import numpy as np
from matplotlib import pyplot as plt
from matplotlib import animation, rc
def animate(i):
xx = np.linspace(0, 5, 2+i)
yy = xx**2
line.set_data(xx, yy)
ax.set_title("Frame = {:d}".format(i))
return (line,)
fig, ax = plt.subplots()
ax.set_xlim(0,5)
ax.set_ylim(0,25)
line, = ax.plot([], [], "ro-")
anim = animation.FuncAnimation(fig, animate,
frames=10, interval=500, blit=True)
This animates a section of a parabola as more and more points are added to it. I would like to do the analog with a bar plot, where both the number of bars and their heights change with each frame. But I haven’t seen an example handling this, and I’m not sure where to begin.