Plotting stacked bar chart

Question

I’m trying to create a stacked bar chart, with
xaxis = 'customer_id(count), yaxis = 'age_band',
and the 3 different loyalty groups stacked in the chart (hue), so I should see 6 bars each with 2-3 different colours.

code I’ve tried:

df.groupby(['age_band','loyalty']).agg(Loyalty=('customer_id', pd.Series.nunique)).plot(kind='bar', stacked=True)

Picture for reference:
data frame & current bar chart

Asked By: Ash Fleming

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Source

Answer 1

IIUC use DataFrame.pivot_table:

(df.pivot_table(index='age_band',columns='loyalty', values='customer_id', aggfunc='nunique')
       .plot(kind='bar', stacked=True))

Answered By: jezrael

Plotting stacked bar chart

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