Python实现读取txt文件并画三维图简单代码示例_Python

Python实现读取txt文件并画三维图简单代码示例

2020-12-23 00:42Mirror_Yu_Chen Python

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刚接触python，最近又需要画一个三维图，然后就找了一大堆资料，看的人头昏脑胀的，今天终于解决了！好了，废话不多说，直接上代码！

1	`#由三个一维坐标画三维散点`

									#coding:utf-8 

									import numpy as np 

									import matplotlib.pyplot as plt 

									from mpl_toolkits.mplot3d.axes3d import Axes3D 

									x = [] 

									y = [] 

									z = [] 

									f = open("data\\record.txt") 

									line = f.readline() 

									while line: 

									  c,d,e = line.split() 

									  x.append(c) 

									  y.append(d) 

									  z.append(e) 

									  line = f.readline()   

									f.close() 

									#string型转int型 

									x = [ int( x ) for x in x if x ] 

									y = [ int( y ) for y in y if y ] 

									z = [ int( z ) for z in z if z ] 

									print x 

									fig=plt.figure() 

									ax=Axes3D(fig) 

									ax.scatter3D(x, y, z) 

									ax.set_xlabel('x') 

									ax.set_ylabel('y') 

									ax.set_zlabel('z') 

									plt.show()

最关键的步骤就是那个string类型转int类型，之前缺了这一步，死活的报错，好了，终于搞定！

#画三维线

									#

									coding: utf - 8

									from mpl_toolkits.mplot3d

									import axes3d

									import matplotlib.pyplot as plt

									x = []

									y = []

									z = []

									f = open("data\\record.txt")

									line = f.readline()

									while line:

									  c, d, e = line.split()

									x.append(c)

									y.append(d)

									z.append(e)

									line = f.readline()

									f.close()

									# string型转int型

									x = [int(x) for x in x

									  if x

									]

									y = [int(y) for y in y

									  if y

									]

									z = [int(z) for z in z

									  if z

									]

									# print x

									fig = plt.figure()

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

									ax.plot(x, y, z)

									ax.set_xlabel('x')

									ax.set_ylabel('y')

									ax.set_zlabel('z')

									plt.show()