Jurik-S-Spandex-Band
The Jurik-S-Spandex-Band AFL could be related to a specific band indicator designed by Jurik. It might offer insights into volatility or price movements using bands. With an Amibroker data feed, this AFL computes and visualizes signals or bands aligned with Jurik’s indicator for traders’ analysis.
/SetChartBkGradientFill( ParamColor("Inner panel upper",colorBlack),ParamColor("Inner panel lower",colorBlack));
Title =EncodeColor( colorWhite) + " Spandex Band " + EncodeColor(36)+ Title = Name() + " " + EncodeColor(36) + Date() ;
HalfLife = Param("channel halflife", 4.5, 0, 10, 0.1, 0);
ChanLen = Param("channel length", 1, 1, 100, 1, 0);
shrink = 2^(-HalfLife);
shrink2 = 1 - shrink;
topChan[0] = High[0];
botChan[0] = Low[0];
HH = HHV(High, ChanLen);
LL = LLV(Low, Chanlen);
for( i = 1; i < BarCount; i++ ) {
topChan[i] = shrink * H[i] + shrink2 * topChan[i-1] ;
botChan[i] = shrink * L[i] + shrink2 * botChan[i-1] ;
if (HH[i] >= topChan[i]) topChan[i] = HH[i];
if (LL[i] <= botChan[i]) botChan[i] = LL[i];
}
Plot(topChan,"spandex top", colorRed, styleThick);
Plot(botChan,"spandex bot", colorRed, styleThick);
Plot(C,"",colorBrightGreen,styleCandle);
for( i = 1; i < BarCount; i++ ) {
if (HH[i] >= topChan[i-1]) topChan[i] = HH[i];
else topChan[i] = shrink * HH[i] + shrink2 * topChan[i-1] ;
if (LL[i] <= botChan[i-1]) botChan[i] = LL[i];
else botChan[i] = shrink * LL[i] + shrink2 * botChan[i-1] ;
}