May 2019
Beginner to intermediate
650 pages
14h 50m
English
Content preview from Learn D3.js
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GeoJSON
GeoJSON is an open standard format (IETF RFC 7946) for geographical information systems (GIS), supported by most GIS applications, GPS software and Web-based mapping applications. Many public data portals provide geographical data in GeoJSON or derived formats such as TopoJSON. GeoJSON files contain geographical coordinates for points and shapes. You can use GeoJSON to draw maps using vector graphics.
GeoJSON is a JSON format. You already know how to load JSON files and extract their data, so it shouldn't be hard for you to load a GeoJSON file, access its properties and plot its coordinates in a Cartesian grid. You may recall that we already did that in Chapter 4, Data Binding (see the section called Drawing a map with SVG) using ...
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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.