Python实现读取txt文件并画三维图简单代码示例
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!
#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()
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