Communicating logic with flowcharts

Flowcharts are effective ways of communicating a process, such as code execution or how your code’s domain logic should work.

In Polyglot Notebooks we can add a new code cell and then change the language to mermaid – Mermaid in order to work with Mermaid.

Next, let’s add in some Mermaid notation specific to flowcharts:

flowchart LR
    load[Load Data] --> split[Split Data]
    split --> train[Train Model]
    train --> test[Test Model]
    split --> test --> predict[Predict New Values]

This notation starts with flowchart LR, which informs Mermaid of the specific diagram type – a flowchart. This is important because each diagram type in Mermaid has a different syntax, as you’ll see in this chapter.

The LR indicator is optional but tells the flowchart diagram we want it to render in left-to-right mode instead...