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<SPAN
class=564470418-31012004>Hi Michael, I haven't had time to go through all
details or think about your actual questions, just looked at the result graph,
but it looks like this code knows the high for the month before it occurs.
Usually that's a no-no, since you're looking into the future, which yields great
returns in backtests but isn't tradable.
<SPAN
class=564470418-31012004>
<SPAN
class=564470418-31012004>I'm not positive why in my quick look, but I think
that's due to lines like this:
<SPAN
class=564470418-31012004>
<SPAN
class=564470418-31012004> MonthlyLow = TimeFrameExpand(Low, inMonthly,
expandFirst);
<SPAN
class=564470418-31012004>
<SPAN
class=564470418-31012004>To avoid looking into the future, I think you'd need
expandLast instead.
<SPAN
class=564470418-31012004>
<SPAN
class=564470418-31012004>HTH,
<SPAN
class=564470418-31012004>
<SPAN
class=564470418-31012004>Dave
<BLOCKQUOTE
>I
am an AFL neophyte and have been working for some time learning AFL and
how to use it in Amibroker. I generally try to learn by following
code which gives interesting results that seem to fit my trading
style. I appreciate the code for monthly swing highs and lows that I
have attached. Unfortunately I lost the original message and cannot go
back to the author with this question. So I will post to the board
and hope someone can either help with the problem or steer me to the
author.I am trying to look for stocks which have not moved much over
the last several months. So I want to explore for monthly highs and
lows which are within $1 of the previous time period. The code is
as follows://Swing Hi/Lo - use monthly for day
charts//Swing Hi: High with lower high on both sides//Swing
Low: Low with higher Low on both
sidesPlotOHLC(Open,High,Low,Close,"",colorBlack,styleCandle);
TimeFrameSet(inMonthly);Res = High < Ref(High,-1) AND
Ref(High,-1) > Ref(High,-2);Sup = Low > Ref(Low,-1) AND
Ref(Low,-1) < Ref(Low,-2);MonthDate = ValueWhen(res,Month(),1)-1;
// Month when Swing Hi occurs - provides correct value.YearDate =
ValueWhen(res,Year(),1);MonBars =
ValueWhen(res,BarIndex(),1);MonthlyHigh =
TimeFrameExpand(High,inMonthly,expandFirst); MonthlyLow =
TimeFrameExpand(Low,inMonthly,expandFirst);//Plot monthly High and Low
values -
OKPlot(MonthlyHigh,"",colorAqua,1);Plot(MonthlyLow,"",colorAqua,1);TimeFrameRestore();//
The 2 lines below work OK. I have used numeric value (9) instead of
Monthdate.SW_High =
ValueWhen(Month()==9/*Monthdate*/,Monthlyhigh,1);SW_BarInx =
ValueWhen(Month()==9/*Monthdate*/ AND
High==SW_High,BarIndex(),1);// These 2 lines below use the
variable "Monthdate" that has the correct value (9) as printed in
interpretation window, but does not provide correct value for
SW_HighSW_High =
ValueWhen(Month()==Monthdate,Monthlyhigh,1);SW_BarInx =
ValueWhen(Month()==Monthdate AND High==SW_High,BarIndex(),1);"Mon
high " + WriteVal(Monthlyhigh,1.2);"Mon Date " +
WriteVal(MonthDate,1.0);"Sel Date "
+WriteVal(Month(),1.0);"SW_High " +
WriteVal(SW_High,1.2);"SW_BarInx " +
WriteVal(SW_BarInx,1.0);"Bar Index " +
WriteVal(BarIndex(),1.0);What would the explore statement look
like that would allow me to find stocks which have not moved much in the
past n time periods ( 1 to 3 months)Thanks in advance for the
help!!!Michael Harrison
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