# _*_ coding: utf-8 _*_

__author__ = ‘pythonwu’

__date__ = “2018/6/15 16:09”

from random import choice,randint

import matplotlib.pyplot as plt

class PersonMovement():

def __init__(self,walk_nums = 10):

self.walk_nums = walk_nums #移动的次数

self.x_values = [0] #x方向轨迹坐标

self.y_values = [0] #y方向的轨迹坐标

def move(self):

while len(self.x_values) < self.walk_nums:

x_direction = choice([-1,1]) # x轴运动方向

x_distance = randint(0,20) #x轴运动距离

x_step = x_direction *x_distance

y_direction = choice([-1,1]) #y轴运动方向

y_distance = randint(0,20) #y轴运动距离

y_step = y_direction *y_distance

if x_step !=0 or y_step !=0:

next_x = self.x_values[-1] + x_step

next_y = self.y_values[-1] + y_step

self.x_values.append(next_x)

self.y_values.append(next_y)

for i in range(5):

pm = PersonMovement(10000)

pm.move()

point_numbers = range(pm.walk_nums)

#绘制运动的轨迹图，且颜色由浅入深

plt.scatter(pm.x_values, pm.y_values, c=point_numbers, cmap=plt.cm.Blues, edgecolors=’none’, s=15)

#将起点和终点高亮显示，s=100代表绘制的点的大小

plt.scatter(pm.x_values[0], pm.y_values[0], c=’green’, s=100)

plt.scatter(pm.x_values[-1], pm.y_values[-1], c=’red’, s=100)

# 隐藏x、y轴

plt.axes().get_xaxis().set_visible(True)

plt.axes().get_yaxis().set_visible(True)

#显示运动轨迹图

plt.show()