project-SDV 5

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✓ Published1🌍 Public

Last edited Dec 5, 2025

Created on Nov 4, 2025

A multi-line chart displays retail gasoline prices for four US regions (A1, R1, M1, D1) as weekly time-series data from the provided CSV. Four colored lines show price trends, each represented with a legend button. Clicking a legend button highlights the selected region’s line while dimming others; clicking again restores all. The chart uses D3 v7 with `scaleTime`, `scaleLinear`, `line`, and `curveMonotoneX`, while rendering via SVG. Points include an HTML tooltip showing exact values and dates. The visualization is built with `d3.csv`, axes via `axisBottom` and `axisLeft`, and interactive filtering through `selection.on` and `selection.attr`.

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MIT Licensed

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