Matplotlib fill between horizontal threshold line and plot

Question

How can I fill between my plot and a horizontal line that's not zero?

I've used the fill_betwee() method and it detects the correct points but it fills all the way from the x axis to my plot

Here's the code that I've done so far:

plt.fill_between(df.index, df['Data'], where= (df['Data'] > 205), color='orange')

Answer 1

在 matplotlib 之间填充，y0：起始值，y1：结束值，其中：范围有限。

plt.fill_between(df.index, 205, df.Data, where=(df.Data > 205), color='orange')

Answer 2

not sure but..

add a list with the same length as df["data"] with 205 for every entry.

plt.fill_between(df.index, df['Data'], [205, 205, ...], where= (df['Data'] > 205), color='orange')