Below is some old code of mine. May get you going though.
PS
#include_once <Nested_Includes.AFL>
Maand = Month();
JanRet = ValueWhen(Maand == 1 AND Ref(Maand,1)==2,ROC(C,MonthPer));
FebRet = ValueWhen(Maand == 2 AND Ref(Maand,1)==3,ROC(C,MonthPer));
MarRet = ValueWhen(Maand == 3 AND Ref(Maand,1)==4,ROC(C,MonthPer));
AprRet = ValueWhen(Maand == 4 AND Ref(Maand,1)==5,ROC(C,MonthPer));
MayRet = ValueWhen(Maand == 5 AND Ref(Maand,1)==6,ROC(C,MonthPer));
JunRet = ValueWhen(Maand == 6 AND Ref(Maand,1)==7,ROC(C,MonthPer));
JulRet = ValueWhen(Maand == 7 AND Ref(Maand,1)==8,ROC(C,MonthPer));
AugRet = ValueWhen(Maand == 8 AND Ref(Maand,1)==9,ROC(C,MonthPer));
SepRet = ValueWhen(Maand == 9 AND Ref(Maand,1)==10,ROC(C,MonthPer));
OctRet = ValueWhen(Maand == 10 AND Ref(Maand,1)==11,ROC(C,MonthPer));
NovRet = ValueWhen(Maand == 11 AND Ref(Maand,1)==12,ROC(C,MonthPer));
DecRet = ValueWhen(Maand == 12 AND Ref(Maand,1)==1,ROC(C,MonthPer));
SeasRet =
IIf(Maand == 1, LastValue(Cum(JanRet)),
IIf(Maand == 2, LastValue(Cum(FebRet)),
IIf(Maand == 3, LastValue(Cum(MarRet)),
IIf(Maand == 4, LastValue(Cum(AprRet)),
IIf(Maand == 5, LastValue(Cum(MayRet)),
IIf(Maand == 6, LastValue(Cum(JunRet)),
IIf(Maand == 7, LastValue(Cum(JulRet)),
IIf(Maand == 8, LastValue(Cum(AugRet)),
IIf(Maand == 9, LastValue(Cum(SepRet)),
IIf(Maand == 10,LastValue(Cum(OctRet)),
IIf(Maand == 11,LastValue(Cum(NovRet)),
IIf(Maand == 12,LastValue(Cum(DecRet)),0))))))))))));
SeasRet = SeasRet/(BarCount-1);
KleurHist = IIf(SeasRet<0, colorRed,IIf(SeasRet>0,colorGreen,colorLightGrey));
Plot(SeasRet,FullName()+" Seasonal Return for
"+StrExtract(ListMonths,SelectedValue(Month()-1)),KleurHist,2+4);
//Plot(OctRet,"ret",1,1);
Title = "{{DATE}} -- {{INTERVAL}}\n{{VALUES}} ";
--- In [email protected], Rick Osborn <ri...@...> wrote:
>
> I would be interested in that too
>
> Best Regards
> Rick Osborn
>
>
>
>
> ________________________________
> From: Rick_Miller_98 <rick3...@...>
> To: [email protected]
> Sent: Mon, December 14, 2009 9:53:23 PM
> Subject: [amibroker] Seasonality Plot
>
>
> I am looking for some code to overlay multiple years on the same Jan-Dec axis
> and to create a composite plot of all of those years to identify seasonality
> trends.
>
> Please E-Mail me if you have it. I am willing to contribute to the cause.
>
> Thanks!
>
