Span Chart

Span charts (floating bar charts) show the range between two values for each category. They effectively visualize temperature ranges, price fluctuations, or any data with meaningful upper and lower bounds, making it easy to compare ranges across categories.

Example Visualization

Span chart showing daily temperature ranges for a week

Try this prompt

"Create a span chart (floating bar chart) showing 'Daily Temperature Ranges' for a week in Denver, Colorado. Generate realistic spring weather data: Monday (min: 38°F, max: 62°F), Tuesday (42°F, 68°F), Wednesday (45°F, 71°F), Thursday (50°F, 75°F - warmest), Friday (44°F, 65°F), Saturday (35°F, 55°F - cold front), Sunday (32°F, 52°F). Each bar spans from min to max temperature. Color bars by range size using a gradient (narrow range: blue, wide range: orange). Add horizontal reference lines for freezing (32°F) and comfortable (70°F). Mark the daily average with a diamond marker. Include gridlines, format Y-axis in °F. Title: 'Denver Weekly Temperature Range - Spring 2024'."

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Python Code Example

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Common Use Cases

1Temperature range visualization
2Price range comparison
3Scheduling time windows
4Measurement tolerance display

Pro Tips

Color code by range size

Add mean markers within spans

Sort by midpoint or range size