getMaxMinValue method
record.$1 : min value record.$2: max value
Implementation
@override
(double, double) getMaxMinValue(
KLineEntity entity, double minV, double maxV) {
if (entity.macd != null) {
minV = min(minV, entity.macd!);
maxV = max(maxV, entity.macd!);
}
if (entity.dea != null) {
minV = min(minV, entity.dea!);
maxV = max(maxV, entity.dea!);
}
if (entity.dif != null) {
minV = min(minV, entity.dif!);
maxV = max(maxV, entity.dif!);
}
return (minV, maxV);
}