surface3d.py

# -*- coding: utf-8 -*-
# https://matplotlib.org/3.2.1/gallery/mplot3d/surface3d.html

import sys

import numpy as np
from matplotlib import cm
from matplotlib.backends.backend_qt5agg import FigureCanvas
from matplotlib.figure import Figure
from matplotlib.ticker import FormatStrFormatter, LinearLocator
from PyQt5.QtWidgets import QApplication

app = QApplication(sys.argv)

fig = Figure(figsize=(8, 6))
canvas = FigureCanvas(fig)
canvas.resize(640, 480)
canvas.show()

ax = fig.gca(projection="3d")

# Make data.
X = np.arange(-5, 5, 0.25)
Y = np.arange(-5, 5, 0.25)
X, Y = np.meshgrid(X, Y)
R = np.sqrt(X ** 2 + Y ** 2)
Z = np.sin(R)

# Plot the surface.
surf = ax.plot_surface(X, Y, Z, cmap=cm.coolwarm, linewidth=0, antialiased=False)

# Customize the z axis.
ax.set_zlim(-1.01, 1.01)
ax.zaxis.set_major_locator(LinearLocator(10))
ax.zaxis.set_major_formatter(FormatStrFormatter("%.02f"))

# Add a color bar which maps values to colors.
fig.colorbar(surf, shrink=0.5, aspect=5)

sys.exit(app.exec_())