Matplotlib 中如何繪製 x，y 座標列表
Jinku Hu
2020年6月25日
2020年1月28日
假設我們有一個類似 (x, y) 的二元組列表，我們需要將它們繪製為 (x, y) 座標。
data = [
[1, 2],
[3, 2],
[4, 7],
[2, 4],
[2, 1],
[5, 6],
[6, 3],
[7, 5],
]
在 Matplotlib 中繪製此 (x, y) 座標列表的完整程式碼如下，
import matplotlib.pyplot as plt
data = [
[1, 2],
[3, 2],
[4, 7],
[2, 4],
[2, 1],
[5, 6],
[6, 3],
[7, 5],
]
x, y = zip(*data)
plt.scatter(x, y)
plt.show()
x, y = zip(*data)
它使用 zip 函式將資料從成對的資料包解壓縮到列表。
plt.scatter(x, y)
我們需要建立散點圖，因此 scatter 是在此例中使用的正確的圖型型別。
Author: Jinku Hu
Founder of DelftStack.com. Jinku has worked in the robotics and automotive industries for over 8 years. He sharpened his coding skills when he needed to do the automatic testing, data collection from remote servers and report creation from the endurance test. He is from an electrical/electronics engineering background but has expanded his interest to embedded electronics, embedded programming and front-/back-end programming.
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