How to show percentage alongside of values in plotly bar charts?

Question

I want to plot percentage alongside values of each bar chart, something like that, or in one line with values (value + percentage)

I can achieve it with a pie chart with the help of this line: fig.update_traces(hoverinfo='label+percent', textinfo='value+percent', textposition='outside'). But struggling to do it with a bar chart. Can anyone help me to to it in fig.update_traces or by editing fig.add_trace(go.Bar()

Example of code I am using for plotting:

data = {'bin': [1, 2, 1, 2, 3], 'id': [1, 2, 3, 3, 3], 'type': [0, 1, 1, 1, 0]}
df = pd.DataFrame(data=data)
df1 = df[df['type']==0]
df2 = df[df['type']==1]


# dict for the dataframes and their names
dfs = {"df1" : df1, "df2" : df2}

# plot the data
temp=dict(layout=go.Layout(font=dict(family="Franklin Gothic", size=12), height=1000, width=1000))
fig = go.Figure()

for i in dfs:
        tmp = dfs[i]
        print(i, ': ', tmp.groupby(['bin'])['id'].nunique().keys()) 
        X = tmp.groupby(['bin'])['id'].nunique().keys()
        Y = tmp.groupby(['bin'])['id'].nunique().tolist()
        fig = fig.add_trace(go.Bar(x = X,
                                   y = Y, 
                                   name = i))

fig.update_traces(texttemplate='%{y}', textposition='outside')
fig.show()

Answer 1

Here's an example keeping your code structure. It uses the argument text in go.Bar(...). Here you can use HTML tags to properly format the text.

data = {'bin': [1, 2, 1, 2, 3], 'id': [1, 2, 3, 3, 3], 'type': [0, 1, 1, 1, 0]}
df = pd.DataFrame(data=data)
df1 = df[df['type']==0]
df2 = df[df['type']==1]


# dict for the dataframes and their names
dfs = {"df1" : df1, "df2" : df2}

# plot the data
temp=dict(layout=go.Layout(font=dict(family="Franklin Gothic", size=12), height=1000, width=1000))
fig = go.Figure()

for i in dfs:
        tmp = dfs[i]
        print(i, ': ', tmp.groupby(['bin'])['id'].nunique().keys()) 
        X = tmp.groupby(['bin'])['id'].nunique().keys()
        Y = tmp.groupby(['bin'])['id'].nunique().tolist()
        Y_text = [str(i) + f'<br>({i}%)</br>' for i in Y]
        
        fig = fig.add_trace(go.Bar(x = X,
                                   y = Y,
                                   text = Y_text, 
                                   name = i))

fig.update_traces(textposition='outside')
fig.show()