The GCG Plugin will insert a page called “Google Chart Generator” under your Settings in WordPress 2.7+ that allows you to select from the available charts in the Google Chart API. Knowledge of the API *is not required*. The options page allows you to select from the available charts in the API, add labels, select the size, colors, etc. Once you have designed a chart to your liking, you may either copy & paste the
tag directly into your post, or you can save your chart for use in the provided widget. You will also have an insert button in the write post box that allows you to insert a saved chart into a post or page.
It will soon be able to do more than static charts: you’ll be able to link it to your WordPress database so that your charts update automatically. Some example charts might be: number of comments per month represented as a line chart, average number of days between posts, and a few others.
It was accidentally release to the plugin repository (oops) on 6.1.2009 before development was complete. It got a ton of downloads in one day, so I went ahead and released version 1.0.1 that cleans thinks up a bit and actually links here. I’ll be adding more features this week. 1.0.3 is out with things like labels, titles and colors. Download it today!