我有一个使用matplotlib绘制的3D图表。
我想将3D绘图投影到特定角度,但使用 axis.view_init(elevation_angle,azimuthal_angle)不包括我想要的角度,这是由于3个维度中有3个可能的旋转平面,而且只能在matplotlib中指定2个角度。
这是一个最低限度的工作示例。
//Decorator Design Pattern
interface Coffee {
public double getCost();
public String getIngredients();
}
class Simplecoffee implements Coffee {
public double getCost() {
return 1;
}
public String getIngredients() {
return "Coffee";
}
}
abstract class CoffeeDecorator implements Coffee {
protected Coffee decoratedcoffee;
protected String ingredientseparator = ":";
public CoffeeDecorator(Coffee decoratedcoffee) {
this.decoratedcoffee = decoratedcoffee;
}
public double getCost() {
return decoratedcoffee.getCost();
}
public String getIngredients() {
return decoratedcoffee.getIngredients();
}
}
class Milk extends CoffeeDecorator {
public Milk(Coffee decoratedcoffee) {
super(decoratedcoffee);
System.out.println("Milk Constructor");
}
public double getCost() {
return super.getCost() + 0.5;
}
public String getIngredients() {
return super.getIngredients() + ingredientseparator + "milk";
}
}
public class Decorator {
public static void main(String[] ar) {
System.out.println("calling simplecoffee in main");
Coffee c = new Simplecoffee();
System.out.println("Cost:" + c.getCost());
c = new Milk(c);
System.out.println("Cost:" + c.getCost());
}
}
这将生成下图中所示的图形,在ms画面中,匆匆用ms绘制,添加线条以显示旋转和轴。
红色表示方位角的角度控制,绕Y轴旋转。
蓝色显示仰角,绕X轴旋转。
黑色显示我需要的旋转,它将围绕Z轴旋转,这是使用axis.view_init(elevation_angle,azimuth_angle)无法实现的。
任何人都可以提供有关如何实现此轮换的任何帮助或见解吗? 感谢
答案 0 :(得分:1)
关于z轴的旋转可以仅使用方位角来实现。
import numpy as np
import matplotlib.animation
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d.axes3d import Axes3D
pi=np.pi
w= np.arange(0,5000,1)
def lorentzian(x,center,width,time,tau):
return 1.0/((1+((x-center)/width)**2)*width*pi)*np.exp(-time/tau)
centers= [1000.0,2000.0,4000.0]
widths = [100.0,300.0,50.0]
taus=np.zeros(len(widths))
for i in xrange(0,len(widths),1):
taus[i] = 1.0/widths[i]
time = np.array([0,0.019,0.033])
B = np.zeros((3,len(w)))
for z in xrange(0,len(time),1):
a= np.zeros(len(w))
for i in xrange(0,len(centers),1):
a = a + lorentzian(w,centers[i],widths[i],time[z],taus[i])
B[z] = a
fig = plt.figure()
ax = fig.add_subplot(111, projection="3d")
colour = ["purple","green","orange"]
for i in xrange(len(time)-1,-1,-1):
ax.plot(time[i]*np.ones_like(w), w ,B[i]*np.ones_like(w),color=colour[i],linewidth=3)
ax.set_xlabel("x")
ax.set_ylabel("y")
ax.set_zlabel("z")
#(elev, azim)
ax.view_init(45,0)
phi = np.linspace(0, 2*np.pi)
def update(phi):
ax.view_init(45, phi*180./np.pi)
ani = matplotlib.animation.FuncAnimation(fig, update, frames=phi)
ani.save(__file__+".gif", writer='imagemagick', fps=10)
plt.show()