Get Plotly offline working in Jupyter Lab

You might encounter blank plot image if you install and use plotly module for Jupyter Lab in the first place.

When plotting data using library like Plotly, you will be asked to create user account and login in order to use the online APIs. However, Plotly does provide an offline version for use. It takes a couple of steps to resolve this manually.

This solutions work on Windows platform, but may also work on Linux/MacOS platform. Mileage varies.

To make sure plotly offline working on Jupyter Lab, please try the followings:

Try install plotly extension for Jupyter Lab:

> jupyter labextension install @jupyterlab/plotly-extension

For details, please visit https://github.com/jupyterlab/jupyter-renderers

You might also encounter ETIMEOUT error while install labextension if your computer is behind a known proxy server. Here's how to resolve:

>
> npm config set http-proxy <proxy address: port>
> npm config set https-proxy <proxy address: port>

For the issue of Plotly chart output from big dataset, the key is to increase maximum rate for output stream on Jupyter Lab server.
Edit the following entry in configuration file C:\Users\%USERNAME%\.jupyter\jupyter_notebook_config.py:
c.NotebookApp.iopub_data_rate_limit = 1.0e10


Here's an Plotly offline sample code block tested to be running on Jupyter Lab v0.31.12:

from plotly import __version__
import plotly
from plotly.offline import init_notebook_mode, plot
from plotly.graph_objs import Scatter

init_notebook_mode()

print("plotly version:", __version__)
plotly.offline.iplot([Scatter(x=[1, 2, 3], y=[3, 1, 6])])