Python读取txt文件，并画三维图

来源：互联网发布：美国总统访华网络直播编辑：程序博客网时间：2024/04/28 11:15

<span style="font-family: Arial, Helvetica, sans-serif;"><p>记忆力差的孩子得勤做笔记！</p><p>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！</p></span>

#由三个一维坐标画三维散点

#coding:utf-8import numpy as npimport matplotlib.pyplot as pltfrom mpl_toolkits.mplot3d.axes3d import Axes3Dx = []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=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-8from mpl_toolkits.mplot3d import 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()

0 0