highlightValue2 method
Highlights the value at the given x-value and y-value in the given DataSet.
Provide -1 as the dataSetIndex to undo all highlighting.
This method will call the listener.
@param x The x-value to highlight
@param y The y-value to highlight. Supply NaN
for "any"
@param dataSetIndex The dataset index to search in
Implementation
void highlightValue2(double x, double y, int dataSetIndex) {
highlightValue4(x, y, dataSetIndex, true);
}