Plot group bar chart plotly python

Question

I am trying to make a grouped bar chart in plotly python. But I have not been able to get it to work. It has drawn me the general groups (API1, API2, API3) but it draws me the accumulated bars and I want differentiated bars for each of the S1, S2 and S3

	API1	API2	API3
s1	41	56	48
s2	40	50	45
s3	15	24	8

This is the output I have, but I can't get individual bars to be created for each of the groups.

post your dataframe as a dict please, so we can recreate your issue. — Barry the Platipus
– Barry the Platipus, Commented Jul 27, 2022 at 13:00
Try the following code. import plotly.express as px;df = df.T;px.bar(df, x=df.index, y=['s1','s2','s3'], barmode='stack') — r-beginners
– r-beginners, Commented Jul 27, 2022 at 13:00

Baron Legendre · Accepted Answer · 2022-07-27 13:10:32Z

2

df.reset_index(inplace=True)
df.rename(columns={'index': 'group'}, inplace=True)
df
##
  group  API1  API2  API3
0    s1    41    56    48
1    s2    40    50    45
2    s3    15    24     8

df_plot = df.melt(value_vars=df.columns, id_vars='group')
df_plot
###
  group variable  value
0    s1     API1     41
1    s2     API1     40
2    s3     API1     15
3    s1     API2     56
4    s2     API2     50
5    s3     API2     24
6    s1     API3     48
7    s2     API3     45
8    s3     API3      8

Plot

fig = px.histogram(df_plot, x='variable', y='value', color='index', barmode='group')
fig.show()

fig2 = px.histogram(df_plot, x='variable', y='value', color='index')
fig2.show()

answered Jul 27, 2022 at 13:10

Baron Legendre

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