D3: Adding values and elements to a chart

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D3: Adding values and elements to a chart

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Last edited Aug 2, 2016

Created on Aug 2, 2016

This example demonstrates an interactive bar chart that starts with 20 values and adds a randomly generated data point each time the user clicks the text prompt. The visualization shows a static bar chart with data labels, and the interactive element updates both the chart's scales and geometry. Built with D3 v4, it uses `d3.scaleBand` and `d3.scaleLinear` to manage axes, and `transition` to animate the repositioning and resizing of rectangles and text elements over 500 milliseconds. The data is an inline JavaScript array, rendered as SVG.

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