May 2019
Beginner to intermediate
650 pages
14h 50m
English
Content preview from Learn D3.js
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A step-by-step grouping example
To demonstrate nesting with multiple keys, we will use a complete step-by-step example using d3.nest(). The code is available in the StepByStepNest/ folder.
Consider the following CSV file (Data/rain_sao_paulo.csv), which contains the average amount of rain in millimeters measured monthly in the city of São Paulo, Brazil, from 1984 to 2017:
Month,Year,Rain_mm01,1984,259.302,1984,32.503,1984,5404,1984,96.805,1984,113... +400 lines0,2017,149.411,2017,159.812,2017,151.3
The data can be loaded using d3.csv(), which makes it available as a JavaScript object when it has finished loading. This process is illustrated as follows:
Loading a CSV and converting it into an object
Now, you need to display that data in an ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.