Formulas:
SW[i]=(ln((1+Value[i])/(1-Value[i]))+SW[i-1])/2, where
ln - natural logarithm,
Value[i]=(((Median price[i] - MinP)/(MaxP-MinP)-0.5)+Value[i-1])*2/3,
MinP, MaxP - minimum and maximum prices in the range from (i-Period) to i.
Download:
MT4/MQ4 version.
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