Animating a gridded surface

This example demonstrates how to animate gridded data using pcolormesh().

Once Loop Reflect

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

import cartopy.crs as ccrs


fig = plt.figure(figsize=(10, 5))
ax = plt.axes(projection=ccrs.Robinson())
ax.set_global()
ax.coastlines()

x = np.linspace(-80, 80)
xs, ys = np.meshgrid(2 * x + 180, x)
zs = xs + ys
vmin, vmax = np.min(zs), np.max(zs)
mesh = ax.pcolormesh(xs, ys, np.zeros_like(zs), transform=ccrs.PlateCarree(),
                     shading='auto', vmin=vmin, vmax=vmax)

n = 10


def update_mesh(t):
    mesh.set_array(zs.ravel() * t)


ts = [i / n for i in range(n)]
# Go back to the start to make it a smooth repeat
ts += ts[::-1]
ani = FuncAnimation(fig, update_mesh, frames=ts,
                    interval=100)

plt.show()