May 2019
Beginner to intermediate
650 pages
14h 50m
English
Content preview from Learn D3.js
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Moving, rotating and scaling a projected map
A projected map has two centers: the geographical center is expressed in [longitude,latitude] and determines the point in the map that will be aligned with the other center, the viewport center, expressed in [x,y] pixel coordinates. The geographical center is controlled by the center() method, and defaults to [0°,0°], which is where the prime meridian crosses the equator. The viewport center is controlled by the translate() method, and defaults to [480,250], which is the center of the default 900x500 viewport.The centers are always connected, that is, the default location [0°,0°] is shown at the default position [480,250], which is the center of the viewport. If you change the viewport center ...
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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.