matplotlib日誌規模導致缺少點

Question

我遇到了matplotlib一個非常奇怪的問題。繪製一些要點如下：

當我切換到在y軸的對數刻度，一些觀點是不連接：

這是一個錯誤？我錯過了什麼嗎？代碼如下。將日誌比例線註釋掉以查看第一個圖。

import matplotlib.pyplot as plt 

fig = plt.figure() 
ax1 = fig.add_subplot(111) 

x = [1.0, 2.0, 3.01, 4.01, 5.01, 6.01, 7.04, 8.04, 9.04, 10.05, 
    11.05, 12.09, 13.17, 14.18, 15.73, 16.74, 17.74, 18.9, 19.91, 
    20.94, 22.05, 23.15, 24.33, 25.48, 26.51, 27.58, 28.86, 29.93, 
    30.93, 32.23, 33.25, 34.26, 35.27, 36.29, 37.33, 38.35, 39.36, 
    40.37, 41.37] 
y = [552427, 464338, 446687, 201960, 227238, 265140, 148903, 134851, 
    172234, 120263, 115385, 100671, 164542, 171176, 28, 356, 0, 0, 
    195, 313, 9, 0, 132, 0, 249, 242, 81, 217, 159, 140, 203, 215, 
    171, 141, 154, 114, 99, 97, 97] 

ax1.plot(x, y, c='b', marker='o') 

ax1.set_yscale('log') 
plt.ylim((-50000, 600000)) 
plt.show() 

Answer 1

log(0)未定義。我猜測matplotlib只是忽略了這裏出現的NaN。