Clicking the links below will lead you to important information about 2D spline charts:
About 2D Spline Charts — Gives you a brief description of 2D spline charts, and explains why you would want to use them.
Working with Spline Chart Data — Provides information on the type of data necessary to generate 2D spline charts (e.g., number of numeric columns), as well as how data is mapped to it.
Spline Chart-Specific Properties — Provides a list of all the properties that are specific to 2D spline charts. These properties allow you to customize your chart.