matplotlib绘制拟合大象曲线

通过十个参数绘制大象曲线

import matplotlib.pyplot as plt
import numpy as np
import matplotlib.animation as animation

num=101
k=np.arange(1,6)
t=np.linspace(0,2*np.pi,num)

Ax=[0,0,12,0,-14]
Bx=[50,18,0,0,0]

Ay=[-60,0,0,0,0]
By=[-30,8,-10,0,0]

eye=20

x=(np.matmul(np.array(Ax).reshape(1,5),np.cos(k.reshape(5,1)*t.reshape(1,101)))+np.matmul(np.array(Bx).reshape(1,5),np.sin(k.reshape(5,1)*t.reshape(1,101)))).reshape((101,))
y=(np.matmul(np.array(Ay).reshape(1,5),np.cos(k.reshape(5,1)*t.reshape(1,101)))+np.matmul(np.array(By).reshape(1,5),np.sin(k.reshape(5,1)*t.reshape(1,101)))).reshape((101,))

plt.plot(y,-x,eye,eye,'o')
plt.show()

让大象的鼻子动起来

num=101
k=np.arange(1,6)
t=np.linspace(0,2*np.pi,num)

Ax=[-60,0,0,0,0]
Bx=[-30,8,-10,0,0]

Ay=[0,0,-12,0,14]
By=[-50,-18,0,0,0]

eye=20
wigg=40

x=(np.matmul(np.array(Ax).reshape(1,5),np.cos(k.reshape(5,1)*t.reshape(1,101)))+np.matmul(np.array(Bx).reshape(1,5),np.sin(k.reshape(5,1)*t.reshape(1,101)))).reshape((101,))
y=(np.matmul(np.array(Ay).reshape(1,5),np.cos(k.reshape(5,1)*t.reshape(1,101)))+np.matmul(np.array(By).reshape(1,5),np.sin(k.reshape(5,1)*t.reshape(1,101)))).reshape((101,))

A=20
nose=np.where(x>wigg)
nose_m=np.where(x>=np.max(x))

class Scope:
	def __init__(self,ax):
		self.ax=ax
		self.move_num=100
		self.i=0

	def paint(self,j):
		if self.i==self.move_num:
			self.i=0
		y0=np.zeros((101,))
		# import pdb;pdb.set_trace()
		y0[nose]=A*np.sin(2*np.pi*self.i/self.move_num)*np.exp(-np.power((nose[0]-nose_m[0]),2)/40)
		self.ax.cla()
		self.ax.plot(x,y+y0,eye,eye,'o')
		self.i+=1

fig,ax=plt.subplots()
scope=Scope(ax)
ani=animation.FuncAnimation(fig,scope.paint,interval=100)
plt.show()

参考链接：

使用matplotlib的动画模块快速更新曲线

在Python MatPlotLib中使用动画时，如何更改绘制曲线的颜色？

如何用四个参数画一头大象？

创建于2407101112，修改于2407101112