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SVE trends trail for Amibroker (AFL)
Rating:
4 / 5 (Votes 6)
Tags:
amibroker, support
from: http://stocata.org/metastock/stop_trail_trends.html
coded this in AFL and later found T.Janeczko had coded it also. Results were the same. I had split it up using 2 functions but adjusted it inside 1 function for speed. Mouse right-click to change parameters.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 | function trends_func(resistance){ trends = (H+L)/2; // initialize support = (H+L)/2; // initialize for( i = 4; i < BarCount; i++ ) { // support prev = support[ i - 1 ]; if (L[ i ] >= L[ i - 2 ] AND L[ i - 1 ] >= L[ i - 2 ] AND L[ i - 3 ] >= L[ i - 2 ] AND L[ i - 4 ] >= L[ i - 2 ]) { support[ i ] = L[ i - 2 ]; } else if (L[ i ] > H[ i - 1]*1.0013) { support[ i ] = H[ i - 1 ]*0.9945; } else if (L[ i ] > prev*1.1) { support[ i ] = prev*1.05; } else { support[ i ] = prev; } // trends prev = trends[ i - 1 ]; if (H[ i ] > prev AND H[ i - 1 ] > prev) { trends[ i ] = Max(prev,support[ i ]); } else if (H[ i ] < prev AND H[ i - 1 ] < prev) { trends[ i ] = Min(prev,resistance[ i ]); } else if (H[ i ] > prev) { trends[ i ] = support[ i ]; } else { trends[ i ] = resistance[ i ]; } } return trends;}// AFL code by E.M.Pottasch, 12/28/2010, // idea from: http://stocata.org/metastock/stop_trail_trends.htmlatrfact = Param("atrfact",2, 1, 10, 0.1);period = Param("period",10, 1, 100, 1);HiLo = IIf(H-L<1.5*MA(H-L,period),H-L,1.5*MA(H-L,period));Href = IIf(L<=Ref(H,-1),H-Ref(C,-1),(H-Ref(C,-1))-(L-Ref(H,-1))/2);Lref = IIf(H>=Ref(L,-1),Ref(C,-1)-L,(Ref(C,-1)-L)-(Ref(L,-1)-H)/2);diff1 = Max(HiLo,Href);diff2 = Max(diff1,Lref);ATRmod = Wilders(diff2,period);loss = atrfact*ATRmod;resistance = C + loss;// calculate trendstrends = trends_func(resistance);SetChartBkColor( ParamColor("ColorBG", ColorRGB( 0, 0, 0 ) ) );GraphXSpace = 5;SetChartOptions(0, chartShowDates);Plot(IIf(trends > C,trends,Null),"\ntrailShort",ParamColor("ColorTrailShort",ColorRGB(255,0,0)),styleStaircase);Plot(IIf(trends < C,trends,Null),"\ntrailLong",ParamColor("ColorTrailLong",ColorRGB(0,255,0)),styleStaircase); |
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I apreciate very much your work.
Please, tell me, in your opinion, wich .afl is better: “SVE trends trail” or “VSTOP3”; and why.
Thank You very much.
thanks. I have only done some backtests using VSTOP on US futures using a very simple approach by reversing the position when VSTOP changes the trend direction. I find this only gives positive results for TF and EMD futures. Others wait for a new trend and wait for a pullback within the trend. I wasn’t able to get good results with that. Did not do any backtests with the code above, regards Ed