February 2019
Beginner to intermediate
284 pages
6h 20m
English
Content preview from Learn Chart.js
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Data structures used in charts
Data used as sources for visualizations is usually organized in some kind of structure. The most common structures are probably lists (arrays) and tables (maps), stored in some standard data format. When using data from external sources, you usually need to clean it up, removing unnecessary values, simplifying its structure, applying bounds, and so on. After that, you can parse it and finally store it locally in a JavaScript array or JavaScript object that can be used by the chart.
Once your data is stored in a JavaScript data structure, you can transform it further by applying mathematical operations on the stored values. You can change the structure, create new fields, merge, and delete data. Typical operations ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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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.