绘制两个不同长度的不同数组 [英] Plotting two different arrays of different lengths

问题描述

我有两个数组.一个是长度为(1000，)的原始信号，另一个是长度为(100，)的平滑信号.我想直观地表示平滑信号如何表示原始信号.由于这些数组的长度不同，因此我无法在另一个数组上绘制它们.在matplotlib中有办法吗?

I have two arrays. One is the raw signal of length (1000, ) and the other one is the smooth signal of length (100,). I want to visually represent how the smooth signal represents the raw signal. Since these arrays are of different length, I am not able to plot them one over the other. Is there a way to do so in matplotlib?

谢谢！

推荐答案

As 然后绘制原始与 x1 以及平滑与 x2 的关系:

and then plot raw versus x1, and smooth versus x2:

plt.plot(x1, raw)
plt.plot(x2, smooth)

np.linspace(0，1，N) 返回长度为 N 的数组，其值从 0 到 1(含)等距.

np.linspace(0, 1, N) returns an array of length N with equally spaced values from 0 to 1 (inclusive).

import numpy as np
import matplotlib.pyplot as plt
np.random.seed(2015)

raw = (np.random.random(1000) - 0.5).cumsum()
smooth = raw.reshape(-1,10).mean(axis=1)

x1 = np.linspace(0, 1, 1000)
x2 = np.linspace(0, 1, 100)
plt.plot(x1, raw)
plt.plot(x2, smooth)
plt.show()

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