[Question]How to add animation to MatplotlibChart in Flet app?

[CoderMaximus]

Question

I made a matplotlib animated chart and tried to turn it to a flet app, but can't get it to animate, and can i also add the toolbar at the bottom?

Code sample

############################################MATPLOTLIB##############################################
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.animation import FuncAnimation

# Define the range of θ values
theta = np.linspace(0, 10 * np.pi, 10000)

Z = np.exp(1j * theta) + np.exp(1j * np.pi * theta)


x = np.real(Z)
y = np.imag(Z)

fig, ax = plt.subplots(figsize=(10, 10))


ax.set_facecolor("black")
ax.set_aspect("equal")
ax.grid(False)
ax.set_xlim(-2.5, 2.5)
ax.set_ylim(-2.5, 2.5)

line, = ax.plot([], [], color="white")

def animate(i):
    line.set_data(x[:i], y[:i])
    return line

ani = FuncAnimation(fig, animate, frames=len(theta), interval=1, blit=False)

plt.show()


########################################FLET###################################################
from flet import *
from flet.matplotlib_chart import MatplotlibChart
import numpy as np
import matplotlib.pyplot as plt


def main(page: Page):
    # Define the range of θ values
    theta = np.linspace(0, 10 * np.pi, 10000)

    Z = np.exp(1j * theta) + np.exp(1j * np.pi * theta)

    x = np.real(Z)
    y = np.imag(Z)

    fig, ax = plt.subplots(figsize=(10, 10))


    ax.set_facecolor("black")
    ax.set_aspect("equal")
    ax.grid(False)
    ax.set_xlim(-2.5, 2.5)
    ax.set_ylim(-2.5, 2.5)
    ax.plot(x, y, color="white", linewidth=0.5)
    
    page.add(MatplotlibChart(fig, expand=True))

if __name__ == '__main__':
    app(target=main)

Error message

No response

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• I have searched for answers to my question both in the issues and in previous discussions.

[SIRGPrice]

You can only animate Flet native charts, like a flet LineChart.

Matplot or any other 3ºparty charts are only available in static image format.

(I tryed it)