用python画 pareto front

傷城~ 2024-04-20 10:48 61阅读 0赞

# 用python画 pareto front #

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## 2D pf ##

import os import matplotlib.pyplot as plt import numpy as np def Read_Files(filename): X_axis = [] # X Y_axis = [] # Y with open(filename, 'r') as f: for line in f.readlines(): x = line.split(" ")[0] y = line.split(" ")[1] X_axis.append(float(x)) Y_axis.append(float(y)) f.close() return X_axis, Y_axis def plot_PF(X_axis, Y_axis): # 可以通过c 参数设置颜色 # T = np.arctan2(Y_axis, X_axis) # plt.scatter(X_axis, Y_axis, s=2, c=T, alpha=0.5) plt.scatter(X_axis, Y_axis, s=20, alpha=0.5) plt.savefig(Figname + '.png', dpi=600) plt.show() Filename = './data/CIHS1_hType_circle.pf' Figname='CIHS1_hType_circle' X_axis, Y_axis = Read_Files(Filename) T = np.arctan2(Y_axis, X_axis) plot_PF(X_axis, Y_axis)

![949241-20190808212354640-619091420.png][]

## 3D pf ##

import os import matplotlib.pyplot as plt import numpy as np from mpl_toolkits.mplot3d import Axes3D def Read_Files(filename): X_axis = [] # X Y_axis = [] # Y Z_axis = [] # Z with open(filename, 'r') as f: for line in f.readlines(): # print(line) x = line.split("\t")[0] # 注意，这里不是使用空格，而是使用Tab制表符进行分割 # print(x) y = line.split("\t")[1] # print(y) z = line.split("\t")[2] # print(z) X_axis.append(float(x)) Y_axis.append(float(y)) Z_axis.append(float(z)) f.close() return X_axis, Y_axis, Z_axis def plot_PF(X_axis, Y_axis, Z_axis): ax = plt.figure().add_subplot(111, projection='3d') # c 设置颜色，alpha设置透明度，s设置点的大小 ax.scatter(X_axis, Y_axis, Z_axis, c='b', alpha=0.5, s=3) plt.savefig(Figname + '.png', dpi=600) plt.show() Filename = './data/hType_sphere.pf' Figname = 'hType_sphere' X_axis, Y_axis, Z_axis = Read_Files(Filename) plot_PF(X_axis, Y_axis, Z_axis)

## Note ##

*  如果使用Pycharm的图片展示，则画出来的3D图形是不能够旋转的,此时必须关闭pycharm的"Show plots in tool windows"
    
    > [https://blog.csdn.net/u013555719/article/details/83896790][https_blog.csdn.net_u013555719_article_details_83896790]
 *  **以下是使用pycharm画出的图形**  
    ![949241-20190810161328837-1948027297.png][]

1.  “File—>Settings”，打开Settings窗口。  
    ![949241-20181109111302464-508458270.jpg][]
2.  找到“Python Scientific”，去除右边候选框中的勾号。  
    ![949241-20181109111413994-1484582816.jpg][]

*  **用上述步骤后使用python原生画图工具显示的图形**  
    ![949241-20190810161908999-1274228832.gif][]

转载于:https://www.cnblogs.com/cloud-ken/p/11323955.html

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[https_blog.csdn.net_u013555719_article_details_83896790]: https://blog.csdn.net/u013555719/article/details/83896790
[949241-20190810161328837-1948027297.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/90e77bae2c9b4a1a97cb462da671df56.png
[949241-20181109111302464-508458270.jpg]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/aa89241992f6432c97134e8c7f753e56.jpg
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[949241-20190810161908999-1274228832.gif]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/99afb4384a324b53a1a1fcd91f5c714a.gif