If two or more series are displayed in a combo chart, and some of these series start at different points, set the 'seriex_startpoint' parameter to a value representing the index of the first data point to be painted. Only data points with an index equal or higher are painted. This applet shows three series. Two of them, the green line series and the blue bar series, had their starting point set to "3" and "6" respectively. Multiple tooltips display is enabled. See page source for details.