Dash Plotly 多个 y 轴

Question

I have the following Dataframe: Dataframe

I want to plot it into a bar chart. With 3 bars, 1 for Positive, 1 for Neutral and 1 for Negative. Im trying this:

fig = px.bar(senti_df, x=senti_df.index, y=['Positive', 'Neutral', 'Negative'])
fig.show()

But all I get as a result is this: Output

How can I plot them side by side? And is there a possibility to plot it into a pie chart? Thank you so much for your help, I'm a beginner :(

Answer 1

I'd like to use raw-like data, therefore, we have some transformation via melt()

df = pd.DataFrame({'Positive':[17], 'Neutral':[26], 'Negative':[7], 'Währung':['Bitcoin(BTC)']})
df2 = df.melt(value_vars=['Positive','Neutral','Negative'], id_vars=['Währung'], var_name='connotation')

print(df2)

        Währung connotation  value
0  Bitcoin(BTC)    Positive     17
1  Bitcoin(BTC)     Neutral     26
2  Bitcoin(BTC)    Negative      7

Plot bar chart

fig_bar = px.bar(df2, x='Währung', y='value', color='connotation', barmode='group')
fig_bar.show()

Plot pie chart

fig_pie = px.pie(df2, values='value', names='connotation')
fig_pie.show()

Answer 2

You can do this by adding the parameter barmode='group' :

fig = px.bar(senti_df, x='Währung', y=['Positive', 'Neutral', 'Negative'],  barmode='group')

Output:

Documentation

barmode (str (default 'relative')) – One of 'group', 'overlay' or 'relative' In 'relative' mode, bars are stacked above zero for positive values and below zero for negative values. In 'overlay' mode, bars are drawn on top of one another. In 'group' mode, bars are placed beside each other.