1. A non-transitory computer-readable medium having stored thereon computer-readable instructions that when executed by a computing device cause the computing device to: receive a first indicator indicating a first graph element type to present in a canvas panel; generate first sample data to render an instance of the first graph element type; render the instance of the first graph element type in the canvas panel using the generated first sample data; render a second instance of the first graph element type in an overview axis using the generated first sample data; receive a second indicator indicating a second graph element type as a basis for presenting the overview axis, wherein the second graph element type is a different graph element type from the first graph element type; generate second sample data to render an instance of the second graph element type; and render the instance of the second graph element type, using the generated second sample data, in the overview axis to replace the rendered second instance of the first graph element type.