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python3dcontour
Mahin
Mahin

Reputation: 459

Multiple 2D contour plots in one 3D figure in python

Is there any way available in python to plot multiple 2D contour plots in one 3D plot in python. I am currently using matplotlib for contouring, but not finding any option for what I am searching for. A sample image I have added. But I want to do it on Z-axis.

enter image description here

Upvotes: 5

Views: 4750

Answers (2)

Dmitry Yarantsev
Dmitry Yarantsev

Reputation: 11

In order to plot true 2-D contour plots in one 3D plot, try this:

import numpy as np
import matplotlib.pyplot as plt

fig    = plt.figure()
ax     = fig.gca(projection='3d')

x      = np.linspace(0, 1, 100)
X, Y   = np.meshgrid(x, x)
Z1 = .1*np.sin(2*X)*np.sin(4*Y)
Z2 = .1*np.sin(3*X)*np.sin(4*Y)
Z3 = .1*np.sin(4*X)*np.sin(5*Y)

levels=np.linspace(Z1.min(), Z1.max(), 100)
ax.contourf(X, Y,Z1, levels=levels, zdir='z', offset=0, cmap=plt.get_cmap('rainbow'))

levels=np.linspace(Z2.min(), Z2.max(), 100)
ax.contourf(X, Y,Z2, levels=levels, zdir='z', offset=1, cmap=plt.get_cmap('rainbow'))

levels=np.linspace(Z3.min(), Z3.max(), 100)
ax.contourf(X, Y,Z3, levels=levels, zdir='z', offset=2, cmap=plt.get_cmap('rainbow'))

ax.set_xlim3d(0, 1)
ax.set_ylim3d(0, 1)
ax.set_zlim3d(0, 2)

plt.show()

enter image description here

Upvotes: 1

Eiji
Eiji

Reputation: 165

You can try this. 

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

fig    = plt.figure()
ax     = fig.gca(projection='3d')

x      = np.linspace(0, 1, 100)
X, Y   = np.meshgrid(x, x)
levels = np.linspace(-0.1, 0.4, 100)  #(z_min,z_max,number of contour),

a=0
b=1
c=2
Z1 = a+.1*np.sin(2*X)*np.sin(4*Y)
Z2 = b+.1*np.sin(3*X)*np.sin(4*Y)
Z3 = c+.1*np.sin(4*X)*np.sin(5*Y)

plt.contourf(X, Y,Z1, levels=a+levels,cmap=plt.get_cmap('rainbow'))
plt.contourf(X, Y,Z2, levels=b+levels,cmap=plt.get_cmap('rainbow'))
plt.contourf(X, Y,Z3, levels=c+levels,cmap=plt.get_cmap('rainbow'))

ax.set_xlim3d(0, 1)
ax.set_ylim3d(0, 1)
ax.set_zlim3d(0, 2)

plt.show()

picture

Upvotes: 4

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