Documentation needed: How are Reports different from Visualizations?

I've just started playing with reportr---I love the concept and I'm interested in helping to extend it.

Can someone explain the concepts of a Report? They're not documented in the README, and I can read the source code, but the intent isn't clear.

It looks like a Report wraps a Visualization and adds an id and title. It looks Reports are one-to-one with Visualizations.

Is that right? If so, why separate the two objects?

[andheiberg]

Reports are a group of visualizations. It could be imagined you had a "Health" and a "Goals" report.

"Health" has visualizations for monitoring your physical and mental health.

"Goals" has visualizations for monitoring how you are reaching your goals.

They are two different concerns they should be different objects.

Reports have a title and many visualizations. Visualizations have many attributes and one report.