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import matplotlib.pyplot as plt
import numpy as np
# Generate some sample data
x = np.linspace(0, 10, 100)
y = np.sin(x)
# Plotting
fig, ax = plt.subplots()
im = ax.scatter(x, y, c=y, cmap='plasma')
plt.colorbar(im)
plt.show()
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plt.set_cmap("seismic")
# to have discrete colormap
plt.set_cmap(mpl.cm.get_cmap("seismic", 11))