Pandas stacked bar chart

Question

I have the following dataset:

SessionId    Query
   1           a   
   1           b
   2           a
   3           b
   3           b
   3           c
            


        

Answer 1

Pandas stacked bar chart relies on plotting different columns, so you'd need to pivot your data table to get the queries as columns holding the number of queries in rows.

Try this:

df = pd.DataFrame({"session":[1,1,2,2,3,3],
              "query":list("ababab"), "count":[5,7,32,5,8,1]})
df.pivot("session","query").plot(kind="bar", stacked=True)

Output: