Chorlton, Sorry, I haven't really looked much at SAR. I'd say you'd need to calculate a modified version of your own for what you want though. You can find the formula on Wikipedia here:
http://en.wikipedia.org/wiki/Parabolic_SAR Take a look at how that works and see if you can see what needs changing to get it to do what you want. Regards, GP --- In [email protected], "chorlton_c_hardy" <[EMAIL PROTECTED]> wrote: > > > Hello GP, > > Thanks for the reply. > > I wasn't really expecting a response but I'm so glad that you did as > you have explained it very well. > > Many Thanks.... > > On a slightly different topic, as you've already been most helpful, > would you have any ideas/opinions with regard to my other recent post > entitled SAR Indicator (post # 117994) > > Once again Thanks, > > Chorlton > > --- In [email protected], "gp_sydney" <gp.investment@> > wrote: > > > > Chorlton, > > > > The loop code does the same thing as the first three lines, but > allows > > you to remove extra buy signals as you go so that they don't affect > > the sell array (since sell signals are based on the date of buy > signals). > > > > The HighestSince line just says set hsb to the highest value of the > > AccDist array since the most recent buy signal (which is where you > can > > get a problem if there's a new buy signal while you're still > holding). > > Sell is then the AccDist value dropping more than 10% below that > > highest value. Note that hsb is an array in this case. > > > > The loop is broken into two main cases: when it's not holding > already, > > and when it is. When it's not holding, it's looking for buy signals. > > When it is holding, it removes any more buy signals and just looks > for > > sell signals. When not holding and a buy signal is encountered, it > > changes the state to holding (ie. doHold = True) and sets the > highest > > AccDist value (hsb) to the current bar's AccDist value. When > holding, > > it first checks for the current bar's AccDist value being higher > than > > the highest already recorded, and changes the highest to the new > > higher value if so, then checks to see if the current bar's AccDist > > value is more than 10% below the currently-recorded highest value. > If > > so, then that's a sell signal, in which case it sets the Sell array > to > > True at that bar, and changes the state to not holding (doHold = > > False). Note that hsb is a single value in this case, not an array. > > > > Hope this helps. > > > > Regards, > > GP > > > > > > --- In [email protected], "chorlton_c_hardy" > > <chorlton-c-hardy@> wrote: > > > > > > > > > Hello GP, > > > > > > Thanks for your detailed reply. > > > > > > Looking at the code posted, I think I will need to refer back to > the > > > manual just to ensure that I understand what every line of code > is > > > actually doing, as my programming is pretty basic!!! :-/ > > > > > > However, I do appreciate your time in posting the answer. > > > > > > Many Thanks & All the best, > > > > > > Chorlton > > > > > > > > > > > > --- In [email protected], "gp_sydney" <gp.investment@> > > > wrote: > > > > > > > > That's not really a trailing stop, since the AccDist line can > fall > > > as > > > > long as it doesn't exceed your limit. > > > > > > > > You could try something like: > > > > > > > > ad = AccDist(); > > > > hsb = HighestSince(Buy, ad); > > > > Sell = ad < hsb*0.9; > > > > > > > > Note though that this will be upset by new buy signals before a > sell > > > > if the AccDist value has dropped somewhat from its highest > value > > > since > > > > the last buy. When you hit a new buy, hsb will then be the > highest > > > > since that buy, which may be lower than the highest value since > the > > > > original buy. This could allow AccDist to drop more than 10% > from > > > the > > > > highest value since the original buy without triggering a sell. > If > > > you > > > > want to avoid that, you'd probably need to generate the Sell > array > > > > iteratively using a loop, removing redundant Buy signals as you > go: > > > > > > > > ad = AccDist(); > > > > Sell = False; > > > > hsb = 0; > > > > doHold = False; > > > > for (i = 0; i < BarCount; i++) > > > > { > > > > if (!doHold) > > > > { > > > > if (Buy[i]) > > > > { > > > > doHold = True; > > > > hsb = ad[i]; > > > > } > > > > } > > > > else > > > > { > > > > Buy[i] = False; > > > > if (ad[i] > hsb) > > > > hsb = ad[i]; > > > > if (ad[i] < hsb * 0.9) > > > > { > > > > doHold = False; > > > > Sell[i] = True; > > > > } > > > > } > > > > } > > > > > > > > Regards, > > > > GP > > > > > > > > > > > > --- In [email protected], "chorlton_c_hardy" > > > > <chorlton-c-hardy@> wrote: > > > > > > > > > > Hello All, > > > > > > > > > > I'm tryin to code a trailing stop loss but am having a number > of > > > > > problems with writing the code. > > > > > > > > > > What I'm trying to achieve is: > > > > > > > > > > 1. Once a Buy signal appears from my system, the value of the > > > current > > > > > AccDist() Line should be recorded. > > > > > > > > > > 2. As long as the AccDist() moves upwards the trade should > remain > > > > > open. > > > > > > > > > > 3. However, once the AccDist() line falls by a certain > percentage > > > > > (say 10% for this example) from its Highest value since the > trade > > > was > > > > > opened, the trade should be stopped out. > > > > > > > > > > I have some code for a simple trailing stop based on the Low > of > > > the > > > > > price (see below) but I'm not sure how to modify it to > accomplish > > > the > > > > > above. > > > > > > > > > > Any ideas would be most welcome... > > > > > > > > > > > > > > > Initial = LLV(Low,5); > > > > > > > > > > stop[0] = Close[0]; > > > > > for( i = 1 ; i < BarCount; i++) > > > > > { > > > > > if( Close[i] > stop[i-1]) > > > > > { > > > > > stop[i] = Max( initial[i], stop[i-1] ); > > > > > } > > > > > else { stop[i] = initial[i]; } > > > > > } > > > > > > > > > > Plot( stop, " Stop Loss", ParamColor("Color", colorCycle ), > > > ParamStyle > > > > > ("Style", styleDots | styleNoLine, maskDefault | styleDots | > > > > > styleNoLine ) ); > > > > > > > > > > > > > > > Many Thanks in advance, > > > > > > > > > > Chorlton > > > > > > > > > > > > > > >
