calcMinMaxY method
Implementation
@override
void calcMinMaxY(double fromX, double toX) {
if (_values == null || _values!.isEmpty) return;
_yMax = -double.infinity;
_yMin = double.infinity;
int indexFrom = getEntryIndex1(fromX, double.nan, Rounding.down);
int indexTo = getEntryIndex1(toX, double.nan, Rounding.up);
for (int i = indexFrom; i <= indexTo; i++) {
// only recalculate y
calcMinMaxY1(_values![i]);
}
}