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# Stochastic Index Blau_TStochI - indicator for MetaTrader 5

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3329
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Published:
2011.06.24 13:56
Updated:
2016.11.22 07:32

Author: Andrey N. Bolkonsky

Stochastic Index (normalized smoothed q-period Stochastic) by William Blau, described in the book Momentum, Direction, and Divergence: Applying the Latest Momentum Indicators for Technical Analysis.

The values of q-period smoothed Stochastic is normalized and mapped into the [0,+100] interval. It allows to determine the overbought/oversold of the market.

• WilliamBlau.mqh must be placed in terminal_data_folder\MQL5\Include\
• Blau_TStochI.mq5 must be placed in terminal_data_folder\MQL5\Indicators\

Stochatic Index Indicator by William Blau

Calculation:

The Stochastic Index Indicator is calculated by formula:

100 * EMA(EMA(EMA( price-LL(q) ,r),s),u)       100 * TStoch(price,q,r,s,u)
TStochI(price,q,r,s,u) = ------------------------------------------------- = ----------------------------------
EMA(EMA(EMA( HH(q)-LL(q) ,r),s),u)          EMA(EMA(EMA( HH(q)-LL(q) ,r),s),u)

where:

• price - close price;
• q - number of bars, used in calculation;
• LL(q) - lowest price of the q bars;
• HH(q) - highest price of the q bars;
• stoch(q)=price-LL(q) - q-period Stochastic;
• TStoch(price,q,r,s,u) - triple smoothed q-period Stochastic;
• HH(q)-LL(q) - q-period price range;
• EMA(...,r) - first smoothing 1st smoothing- exponentially smoothed moving average with period r, applied to:
1. q-period Stochastic;
2. q-period Price Range;
• EMA(EMA(...,r),s) - 2nd smoothing - EMA of period s, applied to result of the 1st smoothing;
• EMA(EMA(EMA(...,r),s),u) - 3rd smoothing - EMA of period u, applied to result of the 2nd smoothing.

if EMA(EMA(EMA(HH(q)-LL(q),r),s),u)=0, the TStochI(price,q,r,s,u)=0.

Input parameters:

• q - period, used for the calculation of Stochastic (by default q=5);
• r - period of the 1st EMA, applied to Stochastic (by default r=20);
• s - period of the 2nd EMA, applied to result of the 1st smoothing (by default s=5);
• u - period of the 3rd EMA, applied to result of the 2nd smoothing (by default u=3);
• AppliedPrice - price type (by default AppliedPrice=PRICE_CLOSE).

Note:

• q>0;
• r>0, s>0, u>0.  If r, s or u =1, smoothing is not used;
• Min. rates =(q-1+r+s+u-3+1).

Translated from Russian by MetaQuotes Software Corp.
Original code: https://www.mql5.com/ru/code/364

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