[amibroker] Re: Tiny red and green arrows on chart ?

["TomB" <directaim@xxxxxxxxx>]

Keith 

I don't believe the arrows are coming from from PlotShapes() 
or any function beginning with 'GFX'. 

The code which shows the arrows
is from the library.
It is:

//Zig Zag Indicator with Valid Entry and Exit Points
//Author/Uploader: Eric Tangen


//z_ZigZagValid
// ******** CHARTING 
PercentChange = 6;
mystartbar = SelectedValue(BarIndex());  // FOR GRAPHING

mystartbardate = LastValue(ValueWhen(mystartbar == BarIndex(), DateNum(),1));

InitialValue = LastValue(ValueWhen(mystartbardate == DateNum(), C , 1 ) ) ;
Temp1 = IIf(BarIndex() >= mystartbar, InitialValue, Null) ;


Plot(Temp1, " ", colorBlack,styleLine);
Plot((1+(LastValue(PercentChange)/100))*(Temp1), " ", colorGreen, styleLine) ;
Plot((1-(LastValue(PercentChange)/100))*(Temp1), " ", colorRed, styleLine) ;

ZZ = Zig(C,LastValue(PercentChange)) ; 
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);


PlotShapes( shapeCircle*PivotLow, colorGreen,0, L, -20) ; 
PlotShapes( shapeCircle*PivotHigh,colorRed,0,H, 20) ;



Buy_Valid = IIf(C>(1+(LastValue(PercentChange)/100))*(ValueWhen(PivotLow, C, 1))
AND ROC(ZZ,1) > 0,1,0); 
Sell_Valid = IIf(C<(1-(LastValue(PercentChange)/100))*(ValueWhen(PivotHigh, C, 1))
AND ROC(ZZ,1) < 0,1,0); 

Buy_Valid = ExRem(Buy_Valid,Sell_Valid);
Sell_Valid = ExRem(Sell_Valid,Buy_Valid);



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);

Title = Name() + " " + Date() + WriteIf(PivotLow, " Up Pivot ","")+WriteIf(PivotHigh," Down Pivot ","")+ WriteIf(Buy_Valid, " Buy Point ", "") + WriteIf(Sell_Valid, " Sell Point ", "") ;

--- In amibroker@xxxxxxxxxxxxxxx, Keith McCombs <kmccombs@xxx> wrote:
>
> Tom --
> Picture is indeed worth a thousand words.  That is weird.
> 
> I suggest you right click on the chart and select "Edit Formula" from 
> the drop-down menu.  Look for Plot Shapes() and/or any function 
> beginning with 'GFX'. 
> 
> If you that doesn't help, upload the Entire .afl code for that pane 
> (what you opened per previous paragraph), to neonfire, so others can 
> take a look at it.
> -- Keith
> 




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