Plotting two different arrays of different lengths

Question

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?

Thanks!

Answer 1

As rth suggested, define

x1 = np.linspace(0, 1, 1000)
x2 = np.linspace(0, 1, 100)

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

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

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()

yields