Looks pretty good - although I converted it to a line from histogram (personal preference!).
thanks! --- In [email protected], "tradingarthur" <[EMAIL PROTECTED]> wrote: > > Hi, > > I have taken the formula from below and put into regular BB > indicator. How does this look? > > P = ParamField("Price field",-1); > Periods = Param("Periods", 15, 2, 100, 1 ); > Width = Param("Width", 2, 0, 10, 0.05 ); > Color = ParamColor("Color", colorCycle ); > Style = ParamStyle("Style"); > lowerBB = BBandBot( P, Periods, Width ); > upperBB = BBandTop( P, Periods, Width ); > PercentBB = (C- lowerBB) / (upperBB - lowerBB); > PercentBB_norm = (PercentBB - 0.5) * 2.0; > Plot( PercentBB_norm * 2 , "%BBnorm" + _PARAM_VALUES(), IIf > (PercentBB_norm*2>0,colorGreen, colorRed), styleHistogram ); > Plot(2,"2 Standard Deviations above average",colorGreen,styleLine); > Plot(-2,"-2 SD",colorRed, styleLine); > > > Arthur > > > --- In [email protected], "brian_z111" <brian_z111@> wrote: > > > > Hello John, > > > > Thanks for that. > > > > Simple but effective. > > If you don't mind me saying, I think I prefer %b to BB themselves. > > > > I see you include the equation in your tutorial section. > > > > http://www.bollingerbands.com/services/bb/?page=5 > > > > > > Any tips on how to trade %b? > > > > BB (also known as brian_z) > > > > > > > > > > --- In [email protected], "bbands" <BBands@> wrote: > > > > > > --- In [email protected], "droskill" <droskill@> wrote: > > > > > > > > Hey all - I'm trying to put together an indicator based on > > Standard > > > > Deviation. The difference, from, say Bollinger Bands in this > > case is > > > > that I want to show the Std Dev from a moving average in terms > of > > 1,2 > > > > and 3 standard deviations from mean, where mean is an N day > moving > > > > average. So, the mean would be represented by a constant > straight > > > > line on a chart, and then a line would go up/down around it. > > > > > > > > For an example, check this out: > > > > > > > http://www.indexindicators.com/charts/sp500-vs-sp500-50d-rsma- > > params-3y-x-x/ > > > > > > > > I really don't know how to approach this - anybody have any > > > > thoughts/ideas? Or maybe someone has done it before (or it's > in > > AB > > > > already) and I just haven't found it. > > > > > > > > Thanks! > > > > > > I think %b is what you want. > > > > > > %b = (last - lowerBB) / (upperBB - lowerBB) > > > > > > (%b is derived from the formula for Stochastics.) > > > > > > Using the standard BB parameters of +/- 2 sd: > > > > > > +2, %b = 1.0 > > > +1, %b = 0.75 > > > 0, %b = 0.5 > > > -1, %b = 0.25 > > > -2, %b = 0.0 > > > > > > If you need centered numbers you can subtract 0.5 from %b and > > multiply > > > the result by two, or whatever constant suits your ap. Again > using > > the > > > defaults of +/- 2 sd: > > > > > > %b_norm = (%b - 0.5) * 2.0 > > > > > > Which would give: > > > > > > +2, %b = 1.0 > > > +1, %b = 0.5 > > > 0, %b = 0.0 > > > -1, %b = -0.5 > > > -2, %b = -1.0 > > > > > > Or, again sing the default parms od +/1 2 sd, multiplying by 4 > would > > > give you the intuitive number you seek: > > > > > > +2, %b = 2.0 > > > +1, %b = 1.0 > > > 0, %b = 0.0 > > > -1, %b = -1.0 > > > -2, %b = -2.0 > > > > > > Enjoy, > > > > > > jab > > > www.bbands.com > > > > > >
