Old Faithful Dataset

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Old Faithful Dataset

✓ Published0🌍 Public

Last edited Sep 27, 2019

Created on Sep 27, 2019

This example visualizes the Old Faithful geyser dataset, plotting eruption duration against waiting time to reveal a clear bimodal clustering pattern. The code uses D3.js to render a scatterplot, with `d3.scaleLinear` mapping the data to pixel coordinates and `d3.axisBottom` and `d3.axisLeft` generating the axes. Each point is drawn as a circle using SVG elements. The data is loaded from a TSV file via `d3.tsv`, containing 272 observations of eruption lengths in minutes and subsequent waiting times. The visualization highlights the two distinct groups of short and long eruptions.

AI-generated description

Classic dataset about geyser eruptions.

Each row represents an observed eruption of the Old Faithful Geyser in Yellowstone National Park. The eruptions column represents the duration of the eruption in minutes, and the waiting column represents the duration in minutes until the next eruption.

Extracted from TSV file published in Bl.ocks.org: Density Contours. Also published as a built-in dataset with R. Primary source: Härdle, W. (1991) Smoothing Techniques with Implementation in S. New York: Springer.

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This scatter plot visualizes the Old Faithful dataset, showing the relationship between eruption time and waiting time. The visualization uses overlapping semi-transparent green circles to convey data density, with larger circles at lower opacity revealing concentrated clusters. Built with D3 v4, the code loads tab-separated data via `d3.tsv` and renders SVG circles with dynamically adjusted radii. The interactive component responds to mouse movement on the page, recalculating the circle radius based on cursor position to explore different density levels. Axes are styled with custom tick marks and labels using D3's axis components.

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