Display hoverlabel before value

Question

I have a dataframe (x,y,z), i want to plot:

x vs y,
display z value as hovertext, with label 'z'.

I can get it to display z value but would like to add a label 'z: ' before the value to clarify what it is. This is the code so far

import plotly.graph_objects as go

df=pd.DataFrame({'x':[0, 1, 2, 3, 4, 5, 6, 7, 8],
                 'y':[0, 11, 31, 21, 41, 31, 41, 61, 51],
                 'z':[0,2,4,6,7,8,9,10,12] })


fig = make_subplots(specs=[[{"secondary_y": True}]])

fig.add_trace(go.Scatter(
   x=df['x'],
   y=df['y'],
   hovertext=df['z'] #displays hover value
   #somehting like: hoverlabel='Z :'
))

user_1523693 · Answer

You can use the hovertemplate argument:

fig = make_subplots(specs=[[{"secondary_y": True}]])
fig.add_trace(go.Scatter(
   x=df['x'],
   y=df['y'],
   hovertext=df['z'],
   hovertemplate = 'Z: %{hovertext}'
))

See more here: https://plotly.com/python/hover-text-and-formatting/#customizing-hover-text-with-a-hovertemplate

Display hoverlabel before value

1 Answers