6 data visualization javascript libraries

A recent web visualization project forced me to explore some data visualization libraries for JavaScript. Below are a few I narrowed down during the development phase.

Leaflet

Leaflet is the leading open-source JavaScript library for mobile-friendly interactive maps. Weighing around 38 KB of JS, it has all the mapping features most developers will ever need.

Although Leaflet is lightweight, and focuses on a core set of features, an easy way to extend its functionality is to use third-party plugins. There are hundreds of nice leaflet plugins you can choose from to extend the functionality of Leaflet. This is one of my favorite mapping libraries and which I’ll surely cover in another post.
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PHP built in functions map

Wordle is a online Java Applet for generating word clouds. The application is simple. You enter a bunch of text and Wordle does the rest. The applet provides options to change color, font and layout. Just for fun I created a Wordle cloud to display php’s built in functions. Two samples are shown below. The size of the font in the cloud is proportional to the number of functions starting with the particular name.
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