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Ribbon Charts

Ribbon charts show how categories change rank over time. The "ribbons" connect each category across time periods, making it easy to see which ones rise or fall in position.

Ribbon charts are awesome for competitive analysis. Which product category is winning this month? Which one is losing ground? The ribbons make it instantly obvious.

When to Use Ribbon Charts

Tracking market share rankings over time
Showing which products/regions move up or down
Visualizing competitive positioning changes
Any scenario where relative rank matters more than absolute values

Reading a Ribbon Chart

Categories are stacked by their value (highest on top)
Ribbons show how each category moves between time periods
Crossing ribbons indicate a change in ranking
The width of each ribbon represents the value

Assignment

Create a new page (Page 7) and rename it "Rankings"
Insert a Ribbon Chart spanning the full page
Configure the chart to show total_revenue by product_category for each day of the week.

The Legend field determines which categories get their own ribbon. The X-axis should be your time dimension (use day of week, date_weekday), and Y-axis is the metric you're ranking by.
Format the title: General → Title → Text → "Category Rankings by Weekday"

It's interesting that while weekends are obviously the biggest sales days by revenue, it's actually just the appliance category that's doing so well on those days.

Save the project and, from the course directory, submit the CLI tests.