python绘制折线图

a~qie

怎么把两个横坐标不一样的数据绘制在一起


它们数据都不会并到一起，横坐标0.18407后面接着跟4.86334e-14了
import re
import matplotlib.pyplot as plt
import numpy as np
from matplotlib.pyplot import MultipleLocator

def file_view(file):            #这个是抓取目标数据的，和这个没有关系
    x = []
    y = []
    p = re.compile(r'\s+')
    q = re.compile(':|Line')
    line = 0
    f = open(file,'r')
    for i in f:
        if line < 400:
            result = q.match(i)
            answer = p.split(i)
            if result or answer[1]=='':
                pass
            else:
                x.append(answer[0])
                y.append(answer[1])
                line += 1
    return x,y


#x_1,y_1 = file_view(r"C:\Users\123\Desktop\you2pi.txt")
#x_2,y_2 = file_view()
x_3,y_3 = file_view(r"C:\Users\123\Desktop\you3pi.txt")
x_4,y_4 = file_view(r"C:\Users\123\Desktop\you5pi.txt")

#print(x_4[-1])
plt.figure()
#plt.plot(x_1,y_1,label='well_num = 5')
#plt.plot(x_2,y_2,label='well_num = 6')
plt.plot(x_3,y_3,label='well_num = 7')
plt.plot(x_4,y_4,label='well_num = 8')

#plt.xticks(np.arange(0,0.03,0.0001))
#plt.yticks(y_1,y_1)
plt.legend()

#x_major_locator=MultipleLocator(10)
#y_major_locator=MultipleLocator(10)
#ax=plt.gca()
#ax.xaxis.set_major_locator(x_major_locator)
#ax.yaxis.set_major_locator(y_major_locator)

plt.show()
附上代码

suchocolate

一个axes只能有一套横坐标

1. import matplotlib.pyplot as plt
   
2. import numpy as np
   
3. 
   
4. x = np.linspace(0, 2, 100)
   
5. plt.plot(x, x, label='linear')
   
6. plt.plot(x, x**2, label='quadratic')
   
7. plt.plot(x, x**3, label='cubic')
   
8. plt.xlabel('x label')
   
9. plt.ylabel('y label')
   
10. plt.title("Simple Plot")
    
11. plt.legend()
    
12. plt.show()

复制代码