May 2019
Beginner to intermediate
650 pages
14h 50m
English
Content preview from Learn D3.js
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Scales
Scales map abstract dimensions to visual representations. They are functions that receive a value in one dimension (usually a dimension that fits the input data) and return a corresponding value in another dimension (usually a dimension that represents output variables that are used in the visualization, such as positions, lengths, or colors).
For example, if your data consists of a list of 20 values (between 0 and 1,000) and you wish to plot them on a 700 x 500 Cartesian grid using all the space available, you need to multiply each value so that its position is proportional to the space available. To fit the 20 items on the x axis, for example, you might divide 700 by 20 and multiply it by the index of each data item. Multiplying ...
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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.