How to write values over matplotlib bar charts without distorted figures

Question

NOTE

The answers here produce a distorted figure; here is the bad result:

Here is the modified code that produces the bad resu

Answer 1

You should not hard-coded the text. Instead, try to extract the values from patches:

def plot_compare_bar(col1, col2, frame, fig_prefix=''):
    frame = frame.sort_values(by=col1)
    ind = np.arange(len(frame))
    width = 0.4
    fig, ax = plt.subplots(figsize=(10,10))
    ax.barh(ind, frame[col1], width, color='red', label=col1)
    ax.barh(ind + width, frame[col2], width, color='blue', label=col2)
    ax.set(
        yticks=ind + width, yticklabels=frame['Class Name'],
        ylim=[2 * width - 1, len(frame)], title=(
            f'{fig_prefix} {col1} vs {col2} evaluation results'))

    # annotation here
    for patch in ax.patches:
        # extract information from patch
        pw = patch.get_width()
        _,y = patch.get_xy()
        color = patch.get_facecolor()

        ax.text(pw + 3, y + width/2, str(pw), 
                color=color,verticalalignment='center')

    ax.legend(loc='lower right')

Output: