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%R
Williams %R (%R, Williams— Percent Range) is a momentum indicator that fluctuates between 0 and -100 and displays overbought and oversold levels.
To use the indicator, the WilliamsR class should be used.
Calculation
The formula for calculating the Williams— Percent Range indicator is similar to that used for calculating the Stochastic Oscillator:
%R = - (MAX(HIGH(i - n)) - CLOSE(i)) / (MAX(HIGH(i - n)) - MIN(LOW(i - n))) * 100
where:
CLOSE(i) - today's closing price;
MAX(HIGH(i - n)) - the highest maximum of the past n periods;
MIN(LOW(i - n)) - the lowest minimum of the past n periods.
The value of n is set as the indicator parameter.
