Plotly legend title

Question

I\'d like to be able to add a title to the legend, in the following code. However, looking at the docs, I don\'t think there is a method for this.

import plo         


        

Answer 1

Just a slight addition of property name to the already proposed solution,

import plotly
import plotly.plotly as py
import plotly.graph_objs as go

plotly.offline.init_notebook_mode(connected=True)

trace0 = go.Scatter(
x=[1, 2, 3, 4, 5],
y=[1, 2, 3, 4, 5],
name="Data1")

data = [trace0]
layout = go.Layout(
legend=dict(
    x=0,
    y=1,
    traceorder='normal',
    font=dict(
        family='sans-serif',
        size=12,
        color='#000'
    ),
    bgcolor='#E2E2E1',
    bordercolor='#FFFFFF',
    borderwidth=2
),
annotations=[
    dict(
        x=0,
        y=1.05,
        xref='paper',
        yref='paper',
        text='Legend Title',
        showarrow=False
    )
])
fig = go.Figure(data=data, layout = layout)
plotly.offline.iplot(fig)

The name property helps in adding custom names to the legends defined.