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python - How to create a legend for 3D bar in matplotlib?

e-mallz contact answered on September 3, 2022 Popularity 3/10 Helpfulness 1/10

answer python - How to create a legend for 3D bar in matplotlib?

python - How to create a legend for 3D bar in matplotlib?

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from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
import numpy as np

fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
x, y = np.random.rand(2, 100) * 4
hist, xedges, yedges = np.histogram2d(x, y, bins=4)

elements = (len(xedges) - 1) * (len(yedges) - 1)
xpos, ypos = np.meshgrid(xedges[:-1]+0.25, yedges[:-1]+0.25)

xpos = xpos.flatten()
ypos = ypos.flatten()
zpos = np.zeros(elements)
dx = 0.5 * np.ones_like(zpos)
dy = dx.copy()
dz = hist.flatten()

ax.bar3d(xpos[:8], ypos[:8], zpos[:8], dx, dy, dz, color='b', zsort='average')
blue_proxy = plt.Rectangle((0, 0), 1, 1, fc="b")
ax.bar3d(xpos[8:], ypos[8:], zpos[8:], dx, dy, dz, color='r', zsort='average')
red_proxy = plt.Rectangle((0, 0), 1, 1, fc="r")
ax.legend([blue_proxy,red_proxy],['cars','bikes'])

plt.show()

Popularity 3/10 Helpfulness 1/10 Language python

Source: pythonhowto.org

Tags: 3d legend python

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Contributed on Sep 03 2022

e-mallz contact

0 Answers Avg Quality 2/10

python - How to create a legend for 3D bar in matplotlib?

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