Simple tooltips in v4

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Simple tooltips in v4

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Last edited Aug 14, 2016

Created on Aug 14, 2016

This example shows a simple line chart of stock closing prices over time, with interactive tooltips that appear when the user hovers over each data point. The tooltip displays the formatted date and closing value near the cursor. Built with d3.js v4, it uses `d3.timeParse` and `d3.scaleTime` for the date axis, `d3.line` to draw the path, and mouseover/mouseout events to animate the tooltip's opacity via `transition`. Data comes from a CSV file and is rendered as SVG circles and axes.

AI-generated description

This is a simple graph demonstrating the addition of tooltips with a graph. This was written using d3.js v4 and is a follow on to the simple scatter plot example here.

This graph is part of the code samples for the update to the book D3 Tips and Tricks to version 4 of d3.js.

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