D3: Adding and removing values from a chart (dynamic labels included)

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D3: Adding and removing values from a chart (dynamic labels included)

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Last edited Mar 26, 2018

Created on Mar 26, 2018

Twenty randomly generated bars appear in an SVG bar chart, each labeled with its numeric value. Buttons add a new bar to the end or remove the first bar, triggering a 500-millisecond transition via `selection.merge` and `transition.attr` to animate position, height, and label placement. The chart uses `d3.scaleBand` and `d3.scaleLinear` to map data to coordinates, with a blue color scale derived from each value.

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