A geochartis a map of a country, a continent, or a region with areas identified in one of three ways: regionmode, markersmode and textmode. A geochart is rendered within the browser using SVGor VML. Note that the geochart is not scrollable or draggable, and it's a line drawing rather than a terrain map. The regionsstyle fills entire regions (typically countries) with colors corresponding to the values that you assign.

A trendlineis a line superimposed on a chart revealing the overall direction of the data. Google Charts can automatically generate trendlines for Scatter Charts, Bar Charts, Column Charts, and Line Charts. Here, we display a generated trendline for Bar chart for each of two series, setting the labels in the legend to "Bug line" (for series 0) and "Test line" (series 1).

A candlestickchart is used to show an opening and closing value overlaid on top of a total variance. Candlestick charts are often used to show stock value behavior. In this chart, items where the opening value is less than the closing value (a gain) are drawn as filled boxes, and items where the opening value is more than the closing value (a loss) are drawn as hollow boxes.

A diffchart is a chart designed to highlight the differences between two charts with comparable data. By making the changes between analogous values prominent, they can reveal variations between datasets. You create a diff chart by calling the computeDiff method with two datasets to generate a third dataset representing the diff, and then drawing that.

A sankey diagramis a visualization used to depict a flow from one set of values to another. The things being connected are called nodesand the connections are called links. Sankeys are best used when you want to show a many-to-many mapping between two domains (e.g., universities and majors) or multiple paths through a set of stages.