如何避免在不删除线图 Matplotlib 中的零条目的情况下绘制零？

Question

我尝试了一个示例代码，我用我的图形来绘制：

import matplotlib.pyplot as plt
import numpy as np

l = [1.10867,1.10894,1.10914,1.10926,1.10930,0.00000,0.00000,0.00000,0.00000,0.00000,1.10867,1.10894,1.10914,1.10926,1.10930]
x = np.arange(len(l))
y = np.array(l)

plt.ion()

fig = plt.figure()
ax = fig.add_subplot(111)
line1, = ax.plot(x, y, 'r-') # Returns a tuple of line objects, thus the comma
fig.canvas.draw()
fig.canvas.flush_events()

出来的图如下：

但我希望有一个这样的数字：

当我从列表中删除零时获得了预期的数字。但是我想如果有一种方法可以在不从列表中删除零的情况下进行绘图，并且该图仍然看起来像预期的那样。

请分享任何想法。

Answer 1

您可以插入 y 等于 0 的点并绘制：

import matplotlib.pyplot as plt
import numpy as np

l = [1.10867,1.10894,1.10914,1.10926,1.10930,0.00000,0.00000,0.00000,0.00000,0.00000,1.10867,1.10894,1.10914,1.10926,1.10930]
x = np.arange(len(l))
y = np.array(l)


y_interp = np.interp(x, x[np.where(y != 0)], y[np.where(y != 0)])
plt.plot(x, y_interp)