Gantt graphs plot data intervals. The horizontal axis usually displays a range of dates or times (CX_AXIS_GANTT_DATE), though numeric scaling can be used (CX_AXIS_GANTT_VALUE). The vertical axis is scaled and labeled using SRGGroupScale according to the number of data series.

The data for each series is taken from two groups. The first group contains the start times; the second contains the end times. Horizontal bars are drawn between the start and end times.

The bar’s appearance is determined by the style object of the individual data item specifying the start time.

Gantt Axis. Two groups per series.