Для расчета в форекс системе PIvot Point есть формулы
Resistance 3 = High + 2*(Pivot Point - Low)
Resistance 2 = Pivot Point + (R1 - S1)
Resistance 1 = 2 * Pivot Point - Low
Pivot Point = ( High + Close + Low )/3
Support 1 = 2 * Pivot Point - High
Support 2 = Pivot Point - (R1 - S1)
Support 3 = Low - 2*(High - Pivot Point)
где брать значения high, low и close?