| 
 | virtual | 
Sets a new minimum or maximum value.
This method is called when a new data point is being added to a series, or when RecalcMinMaxValues() method loops over all data points to recalculate minimum and maximum values on a series. dblValue is compared to the current minimum and maximum values and replaces one of them if it's exceeded.
| val | A value to test. | 
| ci | Component index. | 
| nDataPointIndex | Index of a data point that contains the value. | 
Reimplemented in CBCGPChartTernarySeries.