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: [email protected] [mailto:[email protected]] On Behalf Of ram vel Sent: Wednesday, August 11, 2010 6:05 AM To: [email protected] 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 <[email protected]> wrote: From: warbaby33x <[email protected]> Subject: [amibroker] Donchian 4 week high, 2 week low plot To: [email protected] 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?
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