PriceAndStoch.efs – EFS

PriceAndStoch.efs

File Name: PriceAndStoch.efs

Description:
This formula converts the Stochastic outputs to the price scale of the chart to create an overlay of the Stochastic where the study shares the same y-axis as price. This creates a fixed, or scaled, relationship between the price and the Stochastic study.

Formula Parameters:
%K Length: 14
%K Smoothing: 1
%D Length: 3
Length for Scaling: 50

Notes:
The "Length for Scaling" parameter determines the conversion factor for the Stochastic outputs. The basic rule of thumb here is to enter a number equal to the number of visible bars in your chart.

Download File:
PriceAndStoch.efs

EFS Code:

/*********************************Provided By : eSignal. (c) Copyright 2003*********************************/function preMain() {    setPriceStudy(true);    setStudyTitle("Price And Stochastics ");    setCursorLabelName("%K", 0);    setCursorLabelName("%D", 1);    setDefaultBarThickness(1, 0);    setDefaultBarThickness(1, 1);    setDefaultBarFgColor(Color.blue, 0);    setDefaultBarFgColor(Color.red, 1);        var fp1 = new FunctionParameter("nKlength", FunctionParameter.NUMBER);    fp1.setName("%K Length");    fp1.setLowerLimit(1);    fp1.setDefault(14);    var fp2 = new FunctionParameter("nKsmooth", FunctionParameter.NUMBER);    fp2.setName("%K Smoothing");    fp2.setLowerLimit(1);    fp2.setDefault(1);    var fp3 = new FunctionParameter("nDlength", FunctionParameter.NUMBER);    fp3.setName("%D Length");    fp3.setLowerLimit(1);    fp3.setDefault(3);    var fp4 = new FunctionParameter("nScaleLength", FunctionParameter.NUMBER);    fp4.setName("Length for Scaling");    fp4.setLowerLimit(1);    fp4.setDefault(50);}var aHighs = null;var aLows = null;var study = null;var vHH = null;var vLL = null;function main(nKlength, nKsmooth, nDlength, nScaleLength) {    var nState = getBarState();    var vK = null;    var vD = null;        if (study == null) {        study = new StochStudy(nKlength, nKsmooth, nDlength);        aHighs = new Array(nScaleLength);        aLows = new Array(nScaleLength);    }        if (nState == BARSTATE_NEWBAR) {        aHighs.pop();        aLows.pop();        aHighs.unshift(high());        aLows.unshift(low());    } else {        aHighs[0] = high();        aLows[0] = low();    }    if (aHighs[nScaleLength-1] == null) return; // arrays are not filled yet    vK = study.getValue(StochStudy.FAST);    vD = study.getValue(StochStudy.SLOW);    if (vK == null || vD == null) return;        //define price scale from Highest High and Lowest Low from the last nScaleLength bars.    vHH = high();    vLL = low();    for (i = 0; i < nScaleLength; ++i) {        vHH = Math.max(vHH, aHighs[i]);        vLL = Math.min(vLL, aLows[i]);    }        /*** convert stochastics to price scale (rsy equation:          old stock value * ((price scale max - price scale min) / 100) + price scale min    ************/    vK = ( vK * (( vHH - vLL )/100) ) + vLL;    vD = ( vD * (( vHH - vLL )/100) ) + vLL;    return new Array(vK, vD);}