v = 1; % line velocity
w = 1; % Angular velocity
t = 1:.1:100; % time
t = -t; % control direction
x = v.*t.*cos(w*t); % x coordinates
y = v.*t.*sin(w*t); % y coordinates
plot(x,y); % plot figure
axis equal % make figure squre

import matplotlib.pyplot as plt
import numpy as np
fig=plt.figure()
ax=fig.add_subplot(111,polar=True)
r=np.arange(0,1,0.001)
theta=5*2*np.pi*r
ax.plot(theta,r)
plt.show()

Originally posted by libralibra at 2011-06-12 16:47:54:
阿基米德螺线

[code]v = 1; % line velocity
w = 1; % Angular velocity
t = 1:.1:100; % time
t = -t; % control direction
x = v.*t.*cos(w*t); % x coordinates
y = v.*t.*sin(w*t); % y coordinates
...

Originally posted by lzbbc at 2011-06-12 20:01:53:
请问下，如果想把这个螺旋曲线的圈数定为10，怎么改啊？谢谢啊！