Price Rate of Change

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PriceRateOfChange(Vector, Periods)
PROC(Vector, Periods)

Overview
The Price ROC shows the difference between the current price and the price one or more periods in the past.

Interpretation
A 12-day Price ROC is most often used as an overbought/oversold indicator.

Recommended Parameters
Vector: CLOSE
Periods: 12

Example
set PROC12= PROC(CLOSE, 12)
set BUY = PROC12 > 0 AND (REF(PROC12,1) < 0)
Evaluates to buy when the Price ROC recently shifted into positive territory.

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