Thanks. Yes, that's what I have for a 20 period Donchian (which I have no problems with), but a '4 week' Donchian is a little bit different. i.e. Today being Thurs, the Channel high would be the highest high of the last 4 weeks (compared to the highest high of the last 20 periods). Just a slight difference. =)
Any more suggestions? --- In amibroker@yahoogroups.com, "Lionel Issen" <lis...@...> wrote: > > Hi Ram Vel: > > Thanks for this posting. > > The Formula URL link leads to a page that no longer exists. > > However > > The Details URL link has all the necessary information. > > > > Regards > > > > Lionel > > > > > > From: amibroker@yahoogroups.com [mailto:amibro...@yahoogroups.com] On Behalf > Of ram vel > Sent: Wednesday, August 11, 2010 6:05 AM > To: amibroker@yahoogroups.com > Subject: Re: [amibroker] Donchian 4 week high, 2 week low plot > > > > > > > SEE HERE > > ORIGINAL FORMULA BY R. Bertematto > > //Keywords: donchian channel > > // Level: basic > > // Flags: indicator > > // Formula URL: http://www.amibroker.com/library/formula.php?id=285 > > // Details URL: http://www.amibroker.com/library/detail.php?id=285 > > // > > //------------------------------------------------------------------------------ > > // > > // This plots a Donchian Channel, similar to a Bollinger Band but based on > > // highs and lows. Good for support/resistance. > > // > > //------------------------------------------------------------------------------ > > // Plots a 20 period Donchian channel > > pds= > > 20; > > DonchianUpper = > > HHV(Ref(H,-1),pds); > > DonchianLower = > > LLV(Ref(L,-1),pds); > > DonchianMiddle = (DonchianUpper+DonchianLower)/ > > 2; > > > > Plot > > (DonchianUpper,"DU",colorBlue,styleLine); > > Plot > > (DonchianMiddle,"DM",colorGreen,styleLine); > > Plot > > (DonchianLower,"DL",colorRed,styleLine); > > _SECTION_BEGIN > > ("Price"); > > SetChartOptions > > (0,chartShowArrows|chartShowDates); > > _N > > (Title = StrFormat("{{NAME}} - {{INTERVAL}} {{DATE}} Open %g, Hi %g, Lo %g, > Close %g (%.1f%%) {{VALUES}}", O, H, L, C, SelectedValue( ROC( C, 1 ) ) )); > > Plot > > ( C, "Close", ParamColor("Color", colorBlack ), styleNoTitle | > ParamStyle("Style") | GetPriceStyle() ); > > _SECTION_END > > (); > > > > JUST ADD TIMEFRAME IN CORRECT WAY > > ford > > --- On Wed, 8/11/10, warbaby33x <warbaby...@...> wrote: > > > From: warbaby33x <warbaby...@...> > Subject: [amibroker] Donchian 4 week high, 2 week low plot > To: amibroker@yahoogroups.com > Date: Wednesday, August 11, 2010, 4:40 AM > > > > Have been trying to plot the original Donchian 4 week/2 week system instead > of the usual 20 period/10 period channels. However, every time I plot them, > and go to the 'daily' chart, the chart seemed to be 'displaced' to the right? > What am I doing wrong? > > TimeFrameSet( inWeekly ); > DHigh = Ref(HHV(H, 4), -1); > DLow = Ref(LLV(L, 2), -1); > TimeFrameRestore(); > > DHighW = TimeFrameExpand( DHigh, inWeekly ); > DLowW = TimeFrameExpand( DLow, inWeekly ); > > Plot(C, "Price", colorBlack, styleCandle); > Plot(DHighW, "Weekly AvgLevel", colorGreen, styleThick ); > Plot(DLowW, "Weekly AvgLevel", colorRed, styleThick ); > > I also tried, > > DHigh = HHV(H, 4); > DLow = LLV(L, 2); > > ...but didn't get far. Any help please? >
