Showing total on stacked bar Plotly

Question

How do you show the total on a stacked bar graph in Plotly.

I can hover and see the individual values for each group but not the total.

Answer 1

You could set the sum in the text attribute and show in the hoverinfo.

import plotly
plotly.offline.init_notebook_mode()

animals = ['giraffes', 'orangutans', 'monkeys']
zoo_sf = [20, 14, 23]
zoo_la = [12, 18, 29]

trace1 = plotly.graph_objs.Bar(
    x=animals,
    y=zoo_sf,
    name='SF Zoo',
    hoverinfo='text',
    text=[('Total: ' + str(x + y) + '<br>SF: ' + str(y)) for x, y in zip(zoo_la, zoo_sf)] 
)

trace2 = plotly.graph_objs.Bar(
    x=animals,
    y=zoo_la,
    name='LA Zoo',
    hoverinfo='text',
    text=[('Total: ' + str(x + y) + '<br>LA: ' + str(x)) for x, y in zip(zoo_la, zoo_sf)]
)

data = [trace1, trace2]
layout = plotly.graph_objs.Layout(barmode='stack')
fig = plotly.graph_objs.Figure(data=data, layout=layout)
plotly.offline.iplot(fig)