随机漫步有两个起点 同时开始走 路径不能重叠
## random_walk.py
from random import choice
class RandomWalk:
def __init__(self,num_points=5000):
self.num_points=num_points
self.x_values=[0]
self.y_values=[0]
def fill_walk(self):
while len(self.x_values)<self.num_points:
x_direction = choice([1,-1])
x_distance = choice([0,1,2,3,4])
x_step = x_direction*x_distance
y_direction = choice([1,-1])
y_distance = choice([0,1,2,3,4])
y_step = y_distance *y_direction
if x_step ==0 and y_step ==0:
continue
x = self.x_values[-1] + x_step
y = self.y_values [-1] + y_step
self.x_values .append(x)
self.y_values .append(y)
## random
import matplotlib.pyplot as plt
from random_walk import RandomWalk
while True:
rw = RandomWalk(50_00)
rw.fill_walk()
plt.style.use('classic')
fig, ax = plt.subplots()
point_numbers = range(rw.num_points)
ax.scatter (rw.x_values ,rw.y_values ,c=point_numbers ,cmap=plt.cm.Blues,edgecolors='none', s=10)
#ax.scatter(rw.x_values, rw.y_values, s=15)
ax.scatter (0,0,c='green',edgecolors='none',s=100)
ax.scatter (rw.x_values [-1], rw.y_values [-1], c='red',edgecolors='none',s=100)
#ax.get_xaxis().set_visible(False)
#ax.get_yaxis().set_visible(False)
plt.show()
keep_running = input("Make another waik? (y/n):")
if keep_running =='n':
break
既然是随机漫步,根据伪随机数生成的原理,只要任意两次程序调用的时间戳不同,路径的选择就不会相同。所以你只需要生成两个Random()的实例,就可以保证从你的(0,0)点出发的5000个点随机漫步得到的路径不同了。第二次随机漫步的终点我用橙色标记在图中,第二次随机漫步的颜色我选用灰色系以防止颜色冲突。其余位置的代码使用你原来的图像即可。
while True:
rw1 = RandomWalk(50_00)
rw2 = RandomWalk(50_00)
rw1.fill_walk()
rw2.fill_walk()
plt.style.use('classic')
fig, ax = plt.subplots()
point_numbers = range(rw1.num_points)
ax.scatter (rw1.x_values ,rw1.y_values ,c=point_numbers ,cmap=plt.cm.Blues,edgecolors='none', s=10)
ax.scatter (rw2.x_values ,rw2.y_values ,c=point_numbers ,cmap="Greys",edgecolors='none', s=10)
ax.scatter (0,0,c='green',edgecolors='none',s=100)
ax.scatter (rw1.x_values [-1], rw1.y_values [-1], c='red',edgecolors='none',s=100)
ax.scatter (rw2.x_values [-1], rw2.y_values [-1], c='orange',edgecolors='none',s=100)
plt.show()
keep_running = input("Make another waik? (y/n):")
if keep_running =='n':
break
你这个随机漫步的目的是什么? 具体碰到了哪些问题?
给个思路,记录路径,在路径范围外生成随机点蔓延,代码就不敲了。