How to make part of a bar plot transparent to unhide the filled region beneath it using matplotlib in Python?

Question

I have a pandas dataframe df which looks as follows:

CSP Min Max
A   107.0   111.0
B   126.0   156.0

df.to_dict() is as follows:

{'Min': {'A': 107.0, 'B': 126.0}, 'Max': {'A': 111.0, 'B': 156.0}}

I want to plot a bar plot for A and B by hiding the part between 0 and Min, and only showing the part between Min and Max. Therefore, I chose to color the Min as white color. The code looks as follows:

fig, ax = plt.subplots(figsize = (12, 8))

df.plot(kind = "bar",
        stacked = True, color = ["white", "orange"],
        ax = ax)

plt.legend([])

And the resulting plot is as shown:

I also want to plot a colored range between 55 and 148. So I used plt.fill_between() for this purpose.

fig, ax = plt.subplots(figsize = (12, 8))

ax.fill_between(x = [-1, 2],
                y1 = [55, 55],
                y2 = [148, 148],
                color = "gray",
                alpha = 0.15,
                )

plt.legend([])

It looks as follows:

Now I want to combine these two into one single plot. I used the following code:

fig, ax = plt.subplots(figsize = (12, 8))

df.plot(kind = "bar",
        stacked = True, color = ["white", "orange"],
        ax = ax)

ax.fill_between(x = [-1, 2],
                y1 = [55, 55],
                y2 = [148, 148],
                color = "gray",
                alpha = 0.15,
                )

plt.legend([])

The resulting plot is as shown:

The problem is that the white bar is overlapping the gray region which it should not. So, how can I make the bottom part of the bar transparent so that the gray region beneath it is still visible?

Answer 1

You can just plot (no stack) df['Max'] with bottom option using df['Min']:

df['Max'].plot(kind = "bar",
               color="orange",
               ax = ax,
               bottom=df['Min'])