August 2014
Intermediate to advanced
180 pages
3h 41m
English
Content preview from Leaflet.js EssentialsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Animating a heatmap
So far, you have created a heatmap that showed you the current density of points and intensities, but what if you wanted to show a heatmap that changed over time? In this last example, you will learn how to create a heatmap animation.
An animated heatmap is not as complicated as it might sound. Animation is nothing more than adding and removing data from the map, and you have covered these skills earlier in the chapter. The trick to this example is in the organization of your data and taking advantage of timing events in JavaScript. The following steps will walk you through making an animated heatmap:
- Reference the heatmap plugin:
<script src="Leaflet-heat.js"></script>
- Next, separate your data into an array per time period. Name ...
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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.