Update d3.js data with button press

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Update d3.js data with button press

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Last edited Dec 19, 2016

Created on Dec 19, 2016

This example demonstrates how a line chart can be updated with new data when a user presses an Update button. The visualization initially plots date-stamped stock close values from `data.csv` as a steel-blue line, with axes scaled to the data range. Pressing the button triggers the `updateData()` function, which loads `data-alt.csv` and redraws the line and axes with a smooth 750-millisecond transition. Built with d3.v3, the code relies on `d3.csv` for file loading, `d3.time.scale` and `d3.scale.linear` for scaling, and `d3.svg.line`, `d3.svg.axis`, and `transition()` for animated updates.

AI-generated description

This is a follow on from the simple d3.js graph used as an example in the book D3 Tips and Tricks.

It demonstrates the loading of new data and updating a graph on a button press. It should be taken in context with the text of the book which can be downloaded for free from Leanpub.

forked from <a href='http://bl.ocks.org/d3noob/'>d3noob</a>'s block: <a href='http://bl.ocks.org/d3noob/7030f35b72de721622b8'>Update d3.js data with button press</a>

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