Is it possible to add multiple text labels, or equivalently, multi-line text labels in Plotly using the official JSON API?
I tried entering labels as arrays, strings with <br/>
, 
, \n
, etc. to no avail. My fallback option is to render it with some delimiter and then use D3 to break the into multiple lines.
The blue text below is what Id like, the grey text is what I;m getting.
Almost!
In python you need to use </br></br>
but should work for you too :)
Reproducible example:
(Made it for chart title, plots titles, legends, xlabels... But should work for everything else.)
from plotly.subplots import make_subplots
import plotly.graph_objects as go
fig = make_subplots(rows=2, subplot_titles=("Plot</br></br>Number 1", "Plot</br></br>Number 2"))
fig.add_scatter(y=[2, 1, 3], row=1, col=1, name='TEST</br></br>HEHE')
fig.add_scatter(y=[1, 3, 2], row=2, col=1, name='TEST2</br></br>HEHE')
fig.update_xaxes(tickmode='array',
tickvals=[0,1,2,3],
ticktext=['AAA</br></br>AAA','BBB</br></br>BBB', 'CCC</br></br>CCC'])
fig.update_layout(title_text='Your title</br></br>here', showlegend=True)
Output:
(Don't know why my uploaded pic looks more like a thumbnail than an image. Click on it to zoom in.)