Question

如何在同一窗口中清晰地绘制三条线？此外，我还希望能够将这些线条点缀。

这是我到目前为止所做的：

# -*- coding: utf-8 -*-
import matplotlib.pyplot as plt
import numpy as np 
import math
# opgave 4
def f_opgave4 (x):
    return x**x

def area_under(f, a, b, N):
    return (b-a) / N * (sum ([f_opgave4(a + (b-a)*k/N) for k in range(1,N)]) )

print area_under(f_opgave4, 0.0, 1.0, 100000)

# opgave 5
def f_opgave5(x):
    return math.sin(x)

def area_under(f, a, b, N):
    return (b-a) / N * (sum ([f_opgave5(a + (b-a)*k/N) for k in range(1,N)]) )

    print area_under(f_opgave5, 0.1, 2.0 , 100000)

    # opgave 6
    def f(x):
        return math.sin(x**2)

    def area_under(f, a, b, N):
        return (b-a) / N * (sum ([f(a + (b-a)*k/N) for k in range(1,N)]) )

    print area_under(f, 0.0, math.pi , 100000)

    # nu laten we tekenen 
    x_all = []
    y_opgave4 = []
    y_opgave5 = []
    y_opgave6 = []
    for x in np.arange(-10,10,0.01):
       y4 = f_opgave4(x)
      y5 = f_opgave5(x)
      y6 = f(x)
     x_all.append(x)
     y_opgave4.append(y4)
     y_opgave5.append(y5)
      y_opgave6.append(y6)
    plt.plot(x_all, y_opgave4, 'g-')
    plt.show()
    plt.plot(x_all, y_opgave5, 'r-')
    plt.show()
    plt.plot(x_all, y_opgave6, 'b-')
    plt.show()

Answer 1

plt.plot(x_all, y_opgave4, 'ro', x_all, y_opgave5, 'bo', x_all, y_opgave6, 'go')
plt.show()

Answer 2

哈利路亚谢谢Stackoverflow 这是结局代码但我还是有问题我需要在同一个窗口中绘制所有函数现在每件事情都很好，但我收到了错误（double_scalars）但我不能使用相同的x范围值或我所拥有的所有f的想法如果你试过（我的意思是一个x列表），图形将不清晰，因为（c ^ x）提升得如此之快并且会使y轴变大，而结果其他f函数将显示为直线< / p>

    # -*- coding: utf-8 -*-
import matplotlib.pyplot as plt
import numpy as np 
import math
    # opgave 4
def f_opgave4 (x):
    return x**x

    def opp_under(f, a, b, N):
    return (b-a) / N * (sum ([f_opgave4(a + (b-a)*k/N) for k in range(1,N)]) )

print opp_under(f_opgave4, 0.0, 1.0, 100000)

# opgave 5
def f_opgave5(x):
    return math.sin(x)

def areaa_under(f, a, b, N):
    return (b-a) / N * (sum ([abs(f_opgave5(a + (b-a)*k/N)) for k in range(1,N)]) )

    print areaa_under(f_opgave5, 0.1, 2.0 , 100000)

# opgave 6
def f(x):
        return math.sin(x**2)

def area_under(f, a, b, N):
    return (b-a) / N * (sum ([abs(f_opgave5(a + (b-a)*k/N)) for k in range(1,N)]) )

print area_under(f, 0.0, math.pi , 100000)

# nu laten we tekenen 
    x1_all = []
y_opgave4 = []
for x in np.arange(-2,2,0.01):
    y4 = f_opgave4(x)
        x1_all.append(x)
    y_opgave4.append(y4)

plt.plot(x1_all, y_opgave4, 'r')

x2_all = []
y_opgave5 = []
y_opgave6 = []
    for x in np.arange(-4,4,0.01):
    y5 = f_opgave5(x)
    y6 = f(x)
    x2_all.append(x)
        y_opgave5.append(y5)
    y_opgave6.append(y6)

plt.plot(x2_all, y_opgave5, 'b', x2_all, y_opgave6, 'g')

plt.axvline(x=0.,color='k',ls='dashed')
plt.axhline(y=0.,color='k',ls='dashed')
for line in [0,0.1,2,math.pi]:
        plt.axvline(x=line ,color='y',ls='dashed')
plt.text( 2, 3.5, " $f(x)=x^x$  ", color = 'red', fontsize = 20) 
plt.text( 1.2, 1.2, " $f(x)= sin(x)$  ", color = 'blue', fontsize = 20) 
plt.text( -3.8, 1.5, " $f(x)=sin(x^2)$  ", color = 'green', fontsize = 20) 
    plt.show()

在同一个窗口中清晰地画出三条线并点缀一条线？

2 个答案: