loading multiple stock data from dataset
This example displays multiple stock price time series from a CSV dataset, with one line per company symbol (MSFT, AMZN, IBM) plotted over time. A legend identifies each series by color. The visualization uses D3 v4 with SVG rendering, loading data via `d3.text` and `d3.dsvFormat`, nesting records by symbol with `d3.nest`, and drawing paths with `d3.line` and `curveBasis`. Axes are generated using `d3.axisBottom` and `d3.axisLeft`.
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forked from <a href='http://bl.ocks.org/romsson/'>romsson</a>'s block: <a href='http://bl.ocks.org/romsson/57eb273e01761b829aaa95b28c8193c1'>loading multiple stock data from dataset</a>
forked from <a href='http://bl.ocks.org/Kylaste/'>Kylaste</a>'s block: <a href='http://bl.ocks.org/Kylaste/476ce79ab595cb3ea1f75a6fa2327fbb'>loading multiple stock data from dataset</a>