轴不在情节上

我一直在尝试使用坐标显示区域.
当我将坐标直接输入到列表中时,它将显示该区域.
但是,当我使用变量时,它没有.

#plotting a triangle using coordinates
print('Enter the coordinates')
Na = input('Northings of A = ')
Ea = input('Eastings of A = ')

Nb = input('Northings of B = ')
Eb = input('Eastings of B = ')

Nc = input('Northings of C = ')
Ec = input('Eastings of C = ')

import matplotlib.pyplot as plt
x = [Ea,Eb,Ec,Ea]
y = [Na,Nb,Nc,Na]
plt.plot(x,y,'yellow')
plt.show()


x = [1500,1720,1244.52,1500]
y = [5930.15,6230.25,3254.62,5960.15]
plt.plot(x,'purple')
plt.show()

最佳答案

我认为从输入强制转换为int是一个问题,并且缺少Nd和Ed变量.

print('Enter the coordinates')
Na = input('Northings of A = ')
Ea = input('Eastings of A = ')
Nb = input('Northings of B = ')
Eb = input('Eastings of B = ')
Nc = input('Northings of C = ')
Ec = input('Eastings of C = ')
Nd = input('Northings of D = ')
Ed = input('Eastings of D = ')
import matplotlib.pyplot as plt
x = [int(Ea),int(Eb),int(Ec),int(Ed)]
y = [int(Na),int(Nb),int(Nc),int(Nd)]
plt.plot(x,'green')
plt.show()
x = [1500,'purple')
plt.show()