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It must be a number, the use of barssince etc makes it an array.
You can use Lastvalue(....) but that will not provide answers for
chaart history.
One way I think is to put it inside a loop and thus the values will be
defined individually for each bar rather than a full array
On 10/17/05, tiedemj <home@xxxxxxxxxxxx> wrote:
> Hi – the following does not work:
>
> // Find valid peak number
>
> LastValidPeakNumber = IIf(BarsSince(Sell_Valid)<BarsSince
> (PivotHigh),1,2);
>
>
> // find bars to last valid peak
>
> //THE FOLLOWING STATEMENT GIVES ERROR 5: Argument #3 has incorrect
> type (the function expects different argument type here)
>
> ValidPeakBars=PeakBars(ZigArray,ZigPct,LastValidPeakNumber);
>
>
> The LastValidPeakNumber should be an admissible parameter to
> PeakBars. If I substitute the first sentence to
>
>
>
> LastValidPeakNumber = IIf(True,1,2);
>
>
> Then the second statement works. I include the whole formula below -
> that otherwise works fine to identify when the zig function is
> valid.
>
> Is there a "bug" – or is there something I'm not getting?
>
>
>
> Best regards
>
> Jens Tiedemann
>
> -------------
>
> // find last valid peak to be used in PeakBars function as in
> PeakBars(Array,%Change,LastValidPeakNumber)
>
> ZigPct = 3;
> ZigArray = Close;
>
> // Calculate Buy_Valid/Sell_Valid - all works!
> mystartbar = SelectedValue(BarIndex()); // FOR GRAPHING
> mystartbardate = LastValue(ValueWhen(mystartbar == BarIndex(),
> DateNum(),1));
> InitialValue = LastValue(ValueWhen(mystartbardate == DateNum(),
> ZigArray , 1 ) ) ;
> Temp1 = IIf(BarIndex() >= mystartbar, InitialValue, Null) ;
> ZZ = Zig(ZigArray,LastValue(ZigPct)) ;
> PivotLow = Ref(IIf(Ref(ROC(ZZ,1),-1) < 0 AND ROC(ZZ,1) > 0, 1,
> Null),1);
> PivotHigh = Ref(IIf(Ref(ROC(ZZ,1),-1) > 0 AND ROC(ZZ,1) < 0, 1,
> Null),1);
> Buy_Valid = IIf(ZigArray>(1+(LastValue(ZigPct)/100))*(ValueWhen
> (PivotLow, ZigArray, 1))
> AND ROC(ZZ,1) > 0,1,0);
> Sell_Valid = IIf(ZigArray<(1-(LastValue(ZigPct)/100))*(ValueWhen
> (PivotHigh, ZigArray, 1))
> AND ROC(ZZ,1) < 0,1,0);
> Buy_Valid = ExRem(Buy_Valid,Sell_Valid);
> Sell_Valid = ExRem(Sell_Valid,Buy_Valid);
>
>
>
>
> // Find valid peak number
> LastValidPeakNumber = IIf(BarsSince(Sell_Valid)<BarsSince
> (PivotHigh),1,2);
>
> // find bars to last valid peak
> //THE FOLLOWING STATEMENT GIVES ERROR 5: Argument #3 has incorrect
> type (the function expects different argument type here)
> ValidPeakBars=PeakBars(ZigArray,ZigPct,LastValidPeakNumber);
>
>
>
>
> //Plot section - can be disregarded...
> PlotShapes( shapeCircle*PivotLow, colorGreen,0, L, -20) ;
> PlotShapes( shapeCircle*PivotHigh,colorRed,0,H, 20) ;
>
> Plot(Temp1, " ", colorBlack,styleLine);
> Plot((1+(LastValue(ZigPct)/100))*(Temp1), " ", colorGreen,
> styleLine) ;
> Plot((1-(LastValue(ZigPct)/100))*(Temp1), " ", colorRed, styleLine) ;
>
> PlotShapes( shapeUpArrow*Buy_Valid, colorGreen,0, L, -20);
> PlotShapes( shapeDownArrow*Sell_Valid, colorRed,0,H, -20) ;
>
> BarColors =
> IIf(BarsSince(Buy_Valid) < BarsSince(Sell_Valid)
> AND BarsSince(Buy_Valid)!=0, colorGreen,
> IIf(BarsSince(Sell_Valid) < BarsSince(Buy_Valid)
> AND BarsSince(Sell_Valid)!=0, colorRed, colorBlue));
>
> Plot(C, " ", BarColors, styleBar ) ;
> Plot(ZZ," ", colorLightGrey,styleLine|styleThick);
> Plot(ZZ," ", BarColors,styleDots|styleNoLine);
>
>
>
>
>
>
>
>
>
> Please note that this group is for discussion between users only.
>
> To get support from AmiBroker please send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> For other support material please check also:
> http://www.amibroker.com/support.html
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
>
>
--
Cheers
Graham
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