Working in the Notebook — Anaconda Enterprise 4.4 documentation

Anaconda Enterprise: Documentation

# Working in the Notebook

## Inline Plots

To display Bokeh plots inline in an Jupyter/Zeppelin notebook, use the `output_notebook()` function from bokeh.io instead of (or in addition to) the `output_file()` function we have seen previously. No other modifications are required. When `show()` is called, the plot will be displayed inline in the next notebook output cell. You can see a Jupyter screenshot below:

In order to embed Bokeh plots inside of JupyterLab, you need to install the “jupyterlab_bokeh” JupyterLab extension. This can be done by running the command: `jupyter labextension install jupyterlab_bokeh`.

By defaults, `output_notebook()` apply to Juypter. If you want to use bokeh to display inline plots in Zeppelin, you need to specify notebook_type to zeppelin in `output_notebook()`. Here’s one Zeppelin screenshot.

## Notebook Slides

It is possible to use the Jupyter notebook in conjunction with Reveal.js to generate slideshows from notebook cell content. It is also possible to include standalone (i.e. non-server) Bokeh plots in such sideshows, however some steps must be followed for output to correctly display. Primarily:

The cell containing `output_notebook` must not be skipped.

The rendered cell output of the `output_notebook` call is responsible for making sure the BokehJS library is loaded. Without that, Bokeh plots cannot function. If this cell type is marked “skip” then BokehJS will not be loaded, and Bokeh plots will not display. An alternative, if you wish to hide this cell, is to mark it as the “notes” slide type.

## Notebook Handles

It is possible to update a previously shown plot in-place. When the argument `notebook_handle=True` is passed to `show()` then a handle object is returned. This handle object can be used with the `push_notebook()` function to update the plot with any recent changes to plots properties, data source values, etc. This notebook handle functionality is only supported in classic Jupyter notebooks and is not implemented in JupyterLab or Zeppelin yet.

The following screenshots walk through the basic usage of notebook handles.

- First, import standard functions, as well as `push_notebook()`:

- Next, create some plots, and make sure to pass `notebook_handle=True` to `show()`:

- Looking at the handle, see that it is associated with the output cell for `In[2]` that was just displayed:

- Now, update any properties of the plot, then call `push_notebook()` with the handle:

- After doing so, note that the earlier output cell for `In[2]` has changed (without being re-executed)

More detailed demonstrations of using notebook handles can be found in the following example notebooks:

- examples/howto/notebook_comms/Basic Usage.ipynb
- examples/howto/notebook_comms/Jupyter Interactors.ipynb

## Jupyter Interactors

It is possible to drive updates to Bokeh plots using Jupyter notebook widgets, known as interactors. The key doing this is the `push_notebook()` function described above. Typically it is called in the update callback for the interactors, to update the plot from widget values. A screenshot of the examples/howto/notebook_comms/Jupyter Interactors.ipynb example notebook is shown below: