D3js and Polymer Web Components
This example demonstrates a pie chart built as a custom Polymer web component that reads financial data from a CSV file. Sliders let the user adjust each spending category’s amount, and the chart updates in real time. The component uses Polymer’s `domReady` and `urlChanged` callbacks to load the data via `d3.csv` from the specified `url` attribute. D3’s `d3.layout.pie`, `d3.svg.arc`, and `d3.scale.ordinal` handle the layout, arc generation, and color mapping, while an SVG group element is updated on each slider input.
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forked from <a href='http://bl.ocks.org/anonymous/'>anonymous</a>'s block: <a href='http://bl.ocks.org/anonymous/47a34ba5604f85aa7cbe054db93c9463'>D3js and Polymer Web Components</a>