绘制连接点的线 [英] Plotting lines connecting points

问题描述

我知道还有另一个非常相似的问题，但是我无法从中提取所需的信息.

I know there is another very similar question, but I could not extract the information I need from it.

成对绘制线

我在(x,y)平面上有4个点:x=[x1,x2,x3,x4]和y=[y1,y2,y3,y4]

I have 4 points in the (x,y) plane: x=[x1,x2,x3,x4] and y=[y1,y2,y3,y4]

x=[-1 ,0.5 ,1,-0.5]
y=[ 0.5,  1, -0.5, -1]

现在，我可以这样做来绘制四个点:

Now, I can plot the four points by doing:

import matplotlib.pyplot as plt

plt.plot(x,y, 'ro')
plt.axis('equal')
plt.show()

但是，除了四点之外，我想写两行:

But, apart from the four points, I would like to have 2 lines:

1)将(x1,y1)与(x2,y2)连接的一个 2)第二个连接(x3,y3)和(x4,y4).

1) one connecting (x1,y1) with (x2,y2) and 2) the second one connecting (x3,y3) with (x4,y4).

这是一个简单的玩具示例.在实际情况下，我在飞机上有2N个点.

This is a simple toy example. In the real case I have 2N points in the plane.

如何获得所需的输出:对于具有两条连接线的点?

How can I get the desired output: for points with two connecting lines ?

谢谢.

推荐答案

我认为您将需要为每个细分市场使用单独的行:

I think you're going to need separate lines for each segment:

import numpy as np
import matplotlib.pyplot as plt

x, y = np.random.random(size=(2,10))

for i in range(0, len(x), 2):
    plt.plot(x[i:i+2], y[i:i+2], 'ro-')

plt.show()

(numpy导入只是为了设置一些随机的2x10样本数据)

(The numpy import is just to set up some random 2x10 sample data)

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