Sorry Louis, a mistake there. I am getting my standard deviations mixed up between programs.
In AB StDev is 1 by default and is in $values. To use AB's StDev at 2,3 deviations etc just multiply StDev(C,10) * 2 etc To use it as StDev% StDevPercent = StDev(C,Periods)/MA(C,Periods) * 100; For STANDARD measures of deviation use StDev. For relative measures of deviation use ATR as % or StDev as % One example: Say you want to compare the performance of a fast horse and a slow horse. If they both travel 1 StDev in the same time (number of periods) their performance is equal but the VALUE (QUALITY) of the fast horses performance is higher - it's a grade one horse compared to the other horse, which is a grade 2 (using speed as the criteria). In practice - profit/loss stops might be set at +- 1 standard devation and then filtered for the top performers. The top performers could then be segregated into two watchlists - those with 1 stdev > 2% (high volatility stocks) and those with stdev <=2% (low volatility stocks) - this would allow a comparison of the performance of that trading signal/stop loss combination on high and low volatility stocks. brian_z --- In amibroker@yahoogroups.com, "brian_z111" <[EMAIL PROTECTED]> wrote: > > Louis, > > >Does anyone know if it is possible to get an absolute value ATR? > > The Abs() function serves that purpose but I think you mean something > else. > > ATR is a measure of volatility and it is specific for each stock (or > instrument). The whole idea of it (AFAIK) is to use it on an > individual > stock basis. > > It can be useful to compare volatility: > > 1) internally e.g. against an average of the last (x) days OR against > the StDev (standard deviation) of the volatility measure OR just use > StDev of the Close etc on its own. > > StDev() function does allow to change the setting between 1 or 2 etc > > 2) externally to the volatility of the market OR a sector that the > stock is a member of OR compared to another stock in the same sector > etc. > > brian_z > > > > --- In amibroker@yahoogroups.com, Graham <kavemanperth@> wrote: > > > > you could try a percentage type > > > > ATR(10)/ref(c,-1)*100 > > > > -- > > Cheers > > Graham Kav > > AFL Writing Service > > http://www.aflwriting.com > > > > > > On 24/02/2008, louisprefontaine <rockprog80@> wrote: > > > Does anyone know if it is possible to get an absolute value ATR? > I > > > already use the ATR, but it changes from stock to stock, > depending on > > > the value of the stock. Would it be possible to get an absolute > value > > > indicator, like CMF, RSI, etc.? Thanks! > > > > > > > > > > > > Please note that this group is for discussion between users only. > > > > > > To get support from AmiBroker please send an e-mail directly to > > > SUPPORT {at} amibroker.com > > > > > > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG: > > > http://www.amibroker.com/devlog/ > > > > > > For other support material please check also: > > > http://www.amibroker.com/support.html > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > >