问题：在Matplotlib中，如何在同一图形上绘制多个函数？
我如何可以绘制以下3个功能（即sin，cos并增加），在域t，在相同的数字？
from numpy import *
import math
import matplotlib.pyplot as plt
t = linspace(0, 2*math.pi, 400)
a = sin(t)
b = cos(t)
c = a + b回答 0
要在同一图形上绘制多个图形，您必须执行以下操作：
from numpy import *
import math
import matplotlib.pyplot as plt
t = linspace(0, 2*math.pi, 400)
a = sin(t)
b = cos(t)
c = a + b
plt.plot(t, a, 'r') # plotting t, a separately
plt.plot(t, b, 'b') # plotting t, b separately
plt.plot(t, c, 'g') # plotting t, c separately
plt.show()
To plot multiple graphs on the same figure you will have to do:
from numpy import *
import math
import matplotlib.pyplot as plt
t = linspace(0, 2*math.pi, 400)
a = sin(t)
b = cos(t)
c = a + b
plt.plot(t, a, 'r') # plotting t, a separately
plt.plot(t, b, 'b') # plotting t, b separately
plt.plot(t, c, 'g') # plotting t, c separately
plt.show()
回答 1
也许是更Python化的方式。
from numpy import *
import math
import matplotlib.pyplot as plt
t = linspace(0,2*math.pi,400)
a = sin(t)
b = cos(t)
c = a + b
plt.plot(t, a, t, b, t, c)
plt.show()
Perhaps a more pythonic way of doing so.
from numpy import *
import math
import matplotlib.pyplot as plt
t = linspace(0,2*math.pi,400)
a = sin(t)
b = cos(t)
c = a + b
plt.plot(t, a, t, b, t, c)
plt.show()
回答 2
只需使用功能plot如下
figure()
...
plot(t, a)
plot(t, b)
plot(t, c)