February 2019
Beginner to intermediate
284 pages
6h 20m
English
Content preview from Learn Chart.js
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Pie and doughnut charts
Pie and doughnut charts are used to display numerical proportion between data as parts of a whole. Each data value is represented as a slice, which represents a proportional quantity. These charts are very popular but are also widely criticized. Since we don't perceive angles very well, it's much harder to compare data displayed in a pie chart, than in a bar or line chart. Using pie charts to compare only very small sets of data can avoid or reduce these problems.
A pie chart is usually used to display a single dataset. The type property of the chart object should be pie. Doughnut charts are equivalent to pie charts, but they are created with type: doughnut. You can also transform any pie chart into a doughnut by simply ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.