How to make dual color Line chart This HOWTO guide takes you through the steps that are required in order to create an SVG based dual color Line chart where the upper half is one color (eg green) and the lower half is a different color (eg red). Because SVG has a retained drawing mode you can add elements to the SVG after the charts have been drawn and the effect can still be seen on the resulting SVG. This makes it easy to add the necessary clipping after the charts have been drawn and still see the effect.
How to create a chart without a browser using PhantomJS This HOWTO guide has detailed instructions about how to use the PhantomJS tool to create your charts from the command line. PhantomJS is a Webkit based headless browser that runs from the command line. This means that you can use it to automate (via a scheduled task for example) the creation of charts for the purposes of making images of charts available for download to include in (for example) PDF documents. Note: This HOWTO guide is in the canvas section of the website but applies to SVG charts as well.
How to create a stacked and grouped Bar chart The default types for the Bar chart are regular, stacked and grouped. With a little manipulation though there's one more that can be generated - a combined stacked and grouped chart.
How to make formatting strings easier The SVG libraries String.format() function can be used to easily format strings in a similar way to the C/C++ function sprintf(). It improves the readability of code when compared to simple concatenation.