Animated bar chart shows a dataset of 20 values as vertical bars that re-sort between ascending and descending order when clicked. Built with D3.js version 4.5.0, the SVG visualization uses `d3.scaleBand` for the x-axis, `d3.scaleLinear` for the y-axis, and a transition with `duration(1000)` to animate bar repositioning. Each bar’s fill color is derived from its value via an RGB string, and click events toggle the `sortBars` function, which applies `d3.ascending` or `d3.descending` ordering.