在numpy图中更改轴比例 [英] Changing the axis scale in numpy plot

问题描述

我正在基于一个numpy数组绘制图:

I am drawing a plot based on a numpy array:

A = np.array([[4,5,6],[2,3,6]])

使用plt.plot(A)可以正常工作，并基于6个元组绘制:(0,4)，(1,5)，(2,6)，(0,2)等.

with plt.plot(A) it works fine and draws based on 6 tuples: (0,4), (1,5), (2,6), (0,2) etc.

我想缩放x轴.单位应除以120.所以我要绘制:

I want to scale the x-axis though. The units should be divided by 120. So I want to plot:

(0,4), (1/120,5), (2/120, 6), etc. 

有没有简单的方法可以做到这一点，而无需遍历数组并手动将元组供入图?

Is there any easy way to do it, without looping through the array and manually feeding the tuples to the plot?

推荐答案

指定x轴

scaling_factor = 120.
x = np.arange(A.shape[0])/scaling_factor
plt.plot(x, A)

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