Reusable Area Chart – ICE7
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Jjanisha30gowda@gmail.com
Last edited Oct 26, 2025
Created on Oct 26, 2025
This example visualizes the average yearly temperature in Dallas from 2015 to 2023, transforming a CSV file of monthly readings into a single trend line with a shaded area beneath it. The chart uses a monotone cubic interpolation curve to emphasize the gradual yearly shifts in climate data. The code relies on D3 v7 APIs such as `d3.scaleLinear`, `d3.area`, `d3.rollup`, `d3.curveMonotoneX`, and `d3.axisBottom` to construct the scalable vector graphic (SVG), which includes a steelblue fill, gridlines, and labeled axes for temperature and year.
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