Website | Add new composite chart section and dual axis chart

[lee00678]

• Adding a new section for composite chart. (With more examples coming)
• Add an example for dual axis chart.

I ported over the one example in dev. Used generated data. Since it's pretty controversial in terms of whether/when people should use it, I figure we simply demo the way to do it, so users know it's a possibility.

[rokotyan]

@lee00678 Great, thanks!

I think we should add to the description some brief text and references about pros and cons of using dual axis charts. Datawrapper has a great blog post on the subject: https://blog.datawrapper.de/dualaxis/

[rokotyan]

Also, I don't really like the style of the chart I created (I think there's too much red), but maybe it will help scare people away from using two-axis charts 😄

[lee00678]

Also, I don't really like the style of the chart I created (I think there's too much red), but maybe it will help scare people away from using two-axis charts 😄

I'm happy to change it to bright orange 🔶 to make it more scary.

Flip blue and red?

[rokotyan]

@lee00678 Yes, let's just flip them, thanks!

[lee00678]

@lee00678 Great, thanks!

I think we should add to the description some brief text and references about pros and cons of using dual axis charts. Datawrapper has a great blog post on the subject: https://blog.datawrapper.de/dualaxis/

I added the following description, honestly I don't think there are much pros out there. Happy to edit.

This example shows how to create dual axis chart by overlapping two charts. Dual Axis chart maybe good at showing correlations, or compare two datasets with different measurement units. But we suggest using it with caution. Here are some good articles from [Datawrapper](https://blog.datawrapper.de/dualaxis/) and [Florish](https://flourish.studio/blog/dual-axis-charts/).

[rokotyan]

@lee00678 Nice, I like it, thanks!

[reb-dev]

Looks good!

[lee00678]

Thanks for the reviews!