You won’t believe how easy it is to create animated bar charts in the R programming language to show rankings over time. Racing bar charts can be a useful way to visualize comparative data over time.

Data visualization is an important part of telling stories, but you can get lost in the weeds with D3.js for hours just to make a few simple charts. If charts are all you need, there are plenty of ...

Today Quartz is open-sourcing the code behind Chartbuilder, the application we use to make most of our charts. Along with the underlying charting library — called Gneisschart — the tool has given ...

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