d3-annotation
Full documentation: http://d3-annotation.susielu.com
Setup
Include the file directly
You must include the d3 library before including the annotation file. Then you can add the compiled js file to your website
Using NPM
You can add d3-annotation as a node module by running
npm i d3-svg-annotation -S
Feedback
I would love to hear from you about any additional features that would be useful, please say hi on twitter @DataToViz.
Prior art
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Andrew Mollica, d3-ring-note D3 plugin for placing circle and text annotation, and HTML Annotation
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Scatterplot with d3-annotate, by Chris Polis, example using d3-annotate
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Rickshaw has an annotation tool
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Benn Stancil has an annotation example for a line chart
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Adam Pearce has arc-arrows and swoopy drag
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Micah Stubbs has a nice VR chart based on swoopy drag
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Scott Logic evokes “line annotation” in a graph (different concept).
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Seven Features You’ll Want In Your Next Charting Tool shows how the NYT does annotations
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John Burn-Murdoch example with adding/removing and repositioning annotations