loading multiple stock data from dataset
The visualization displays monthly closing prices for multiple technology stocks—Microsoft, Amazon, and IBM—as a set of overlaid line charts, with each stock distinguished by a unique color and identified by a legend. It encodes the data from a CSV file containing symbol, date, and price fields, parsed using `d3.dsvFormat`. The code leverages d3.v4's syntax, including `d3.nest` to group by symbol, `d3.scaleTime` and `d3.scaleLinear` for axes, and `d3.line` with `d3.curveBasis` for smooth paths. A color scale via `d3.scaleOrdinal` applies the categorical palette, while axes are rendered with `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>