Python 畫3D心形圖

原文

因為需要再列印中文，再原始碼上做了修改，引入了字型檔案。

• 程式碼

#coding=utf-8
#3D心形 
from mpl_toolkits.mplot3d import Axes3D
from matplotlib import cm
from matplotlib.ticker import LinearLocator, FormatStrFormatter
import matplotlib.pyplot as plt
import numpy as np
import matplotlib

#設定字型
myfont = matplotlib.font_manager.FontProperties(fname="SIMLI.TTF"
 
)#SIMLI.TTF與.py在同一目錄下 字型檔案庫Windows一堆
matplotlib.rcParams['axes.unicode_minus'] = False

def heart_3d(x,y,z):
 return (x**2+(9/4)*y**2+z**2-1)**3-x**2*z**3-(9/80)*y**2*z**3


def plot_implicit(fn, bbox=(-1.5, 1.5)):
 xmin, xmax, ymin, ymax, zmin, zmax = bbox*3
 fig = plt.figure()
 ax = fig.add_subplot(111
 
, projection='3d')
 A = np.linspace(xmin, xmax, 100) # resolution of the contour
 B = np.linspace(xmin, xmax, 40) # number of slices
 A1, A2 = np.meshgrid(A, A) # grid on which the contour is plotted

 for z in B: # plot contours in the XY plane
  X, Y = A1, A2
  Z = fn(X, Y, z)
  cset = ax.contour(X, Y, Z+z, [z], zdir='z'
 
, colors=('r',))
  # [z] defines the only level to plot
  # for this contour for this value of z

 for y in B: # plot contours in the XZ plane
  X, Z = A1, A2
  Y = fn(X, y, Z)
  cset = ax.contour(X, Y+y, Z, [y], zdir='y', colors=('red',))

 for x in B: # plot contours in the YZ plane
  Y, Z = A1, A2
  X = fn(x, Y, Z)
  cset = ax.contour(X+x, Y, Z, [x], zdir='x',colors=('red',))

 # must set plot limits because the contour will likely extend
 # way beyond the displayed level. Otherwise matplotlib extends the plot limits
 # to encompass all values in the contour.
 ax.set_zlim3d(zmin, zmax)
 ax.set_xlim3d(xmin, xmax)
 ax.set_ylim3d(ymin, ymax)
 #標題
 plt.title(u"這是一個標題",fontproperties=myfont)
 #取消座標軸顯示
 plt.axis('off')
 plt.show()

if __name__ == '__main__':
 plot_implicit(heart_3d) 

最後效果

End