Does anybody know which library IBM uses to create the charts in their design guidelines?
closed as off-topic by Shreyas Tripathy, Midas, Andrew Martin, locationunknown, Matt Obee Oct 26 '17 at 10:49
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They are definitely using D3.js with some custom styling (open "Sources" tab in Chrome, design/assets/language/app.js clearly is a bundle with D3 v4.9.1 imported at the top).