记忆力差的孩子得勤做笔记！
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 |
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
#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
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
#coding: utf - 8from mpl_toolkits.mplot3dimport axes3dimport matplotlib.pyplot as pltx = []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 xfig = 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() |
总结
以上就是本文关于Python实现读取txt文件并画三维图简单代码示例的全部内容，希望对大家有所帮助。感兴趣的朋友可以继续参阅本站其他相关专题。如有不足之处，欢迎留言指出。感谢朋友们对本站的支持！
原文链接：http://blog.csdn.net/sinat_31425585/article/details/52351224
