Creating a Bar Graph with HTML5 Canvas and JavaScript

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This tutorial will show how to create a simple bar graph on an HTML5 Canvas using JavaScript. The code is available at the end of the article for download.
The example below represents the number of sightings of watermelon duck by region updated each second.
First we will look at the bar graph and what it can do, followed by an example of the graph in action. Then we go step by step through the code and learn how it was done. You can download the source code at the... more...