在 seaborn python 的分组条形图中注释文本

Question

I have difficulties to annotate text to bars in the grouped barplots that i created with seaborn. I've done some researches in here and google but cannot find the fixes. Below are codes that I have some far.

risk_df = df.groupby(['Year', 'Risk'], as_index=False).size().rename(columns= 'size':'Risk_count'}).set_index('Year')

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

x = risk_df.index
y = risk_df['Risk_count']

ax = sns.barplot(x=x,
                 y=y,
                 hue=risk_df['Risk'],
                 data = risk_df)

for p in ax.patches:
   ax.annotate(format(p.get_height()),
              (p.get_x() + p.get_width() / 2),
               p.get_height(),
               ha='center', 
               va='center',
               xytext=(0, 9),
               textcoords='offset points')

plt.title('Reports by risk rating', size = 18)
plt.tight_layout()

The code above show me the error that "TypeError: init () got multiple values for argument 'xytext'"

The current plot is look like this, but I would like to add number of observations per category of risk per year. Thanks first for your helps!!

Answer 1

The coordinates of the annotations need to be set in tuples, so the parentheses are wrongly bound.

for p in ax.patches:
    ax.annotate(format(p.get_height()),
              (p.get_x() + p.get_width() / 2, p.get_height()),
               ha='center', 
               va='center',
               xytext=(0, 9),
               textcoords='offset points')