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hi wally,
maybe this example helps (below). You can put this
in an afl file and call it in a chart:
SetBarsRequired(10000,10000);
Buy = Cross(MA(C,15),MA(C,50));
Short =
Cross(MA(C,50),MA(C,15));
Buy = ExRem(Buy,Short); Buy = Ref(Buy,-1);
Short
= ExRem(Short,Buy); Short = Ref(Short,-1);
Sell = Short;
Cover =
Buy;
BuyPrice = O;
ShortPrice = O;
SellPrice =
O;
CoverPrice = O;
GraphXSpace = 5;
SetChartOptions(0,
chartShowDates);
Plot(C,"Last=",colorBlue,64);
PlotShapes(IIf(Buy,shapeUpArrow,shapeNone),colorGreen,0,L,-15);
PlotShapes(IIf(Buy,shapeHollowUpArrow,shapeNone),colorWhite,0,L,-15);
PlotShapes(IIf(Buy,shapeHollowSmallCircle,shapeNone),colorWhite,0,BuyPrice,0);
PlotShapes(IIf(Sell,shapeDownArrow,shapeNone),colorRed,0,H,-15);
PlotShapes(IIf(Sell,shapeHollowDownArrow,shapeNone),colorWhite,0,H,-15);
PlotShapes(IIf(Sell,shapeHollowSmallCircle,shapeNone),colorWhite,0,SellPrice,0);
PlotShapes(IIf(Short,shapeDownTriangle,shapeNone),colorYellow,0,H,IIf(Short
AND
Sell,-30,-15));
PlotShapes(IIf(Short,shapeHollowDownTriangle,shapeNone),colorWhite,0,H,IIf(Short
AND
Sell,-30,-15));
PlotShapes(IIf(Short,shapeHollowCircle,shapeNone),colorWhite,0,ShortPrice,0);
PlotShapes(IIf(Cover,shapeUpTriangle,shapeNone),colorLightBlue,0,L,IIf(Cover
AND
Buy,-30,-15));
PlotShapes(IIf(Cover,shapeHollowUpTriangle,shapeNone),colorWhite,0,L,IIf(Cover
AND
Buy,-30,-15));
PlotShapes(IIf(Cover,shapeHollowCircle,shapeNone),colorWhite,0,CoverPrice,0);
----- Original Message -----
Sent: Wednesday, November 05, 2008 9:22
PM
Subject: [amibroker] Re: How to Enlarge
BUY and SELL arrows on Chart
Hello Edward. Thank you for helping. Please bear with me I am not
a
programmer but learning. I simply took two of the lines of code
you
sent me which are
:
PlotShapes(IIf(Buy,shapeUpArrow,shapeNone),colorGreen,0,L,-15);
PlotShapes(IIf(Sell,shapeDownArrow,shapeNone),colorRed,0,H,-15);
I
placed these in my Formula Editor File along with the code to my
system and
received an error message which said:
Variable 'buy' used without
having been initialized.
Variable 'sell' used without having been
initialized.
Just curious what I need to accomplish to enlarge the buy
and sell
arrows. Thank you.
--- In amibroker@xxxxxxxxxps.com,
"Edward Pottasch" <empottasch@...>
wrote:
>
>
electricwally,
>
> you can choose different symbols. However, I
like to put a little
circle on the exact price that I buy/sell and an arrow
further
below/above.
>
> for example:
>
>
PlotShapes(IIf(Buy,shapeUpArrow,shapeNone),colorGreen,0,L,-15);
>
PlotShapes(IIf(Buy,shapeHollowUpArrow,shapeNone),colorWhite,0,L,-15);
>
PlotShapes(IIf(Buy,shapeHollowSmallCircle,shapeNone),colorWhite,0,BuyPrice,0);
>
>
PlotShapes(IIf(Sell,shapeDownArrow,shapeNone),colorRed,0,H,-15);
>
PlotShapes(IIf(Sell,shapeHollowDownArrow,shapeNone),colorWhite,0,H,-15);
>
PlotShapes(IIf(Sell,shapeHollowSmallCircle,shapeNone),colorWhite,0,SellPrice,0);
>
>
PlotShapes(IIf(Short,shapeDownTriangle,shapeNone),colorYellow,0,H,IIf(Short
AND
Sell,-30,-15));
>
PlotShapes(IIf(Short,shapeHollowDownTriangle,shapeNone),colorWhite,0,H,IIf(Short
AND
Sell,-30,-15));
>
PlotShapes(IIf(Short,shapeHollowCircle,shapeNone),colorWhite,0,ShortPrice,0);
>
>
PlotShapes(IIf(Cover,shapeUpTriangle,shapeNone),colorLightBlue,0,L,IIf(Cover
AND
Buy,-30,-15));
>
PlotShapes(IIf(Cover,shapeHollowUpTriangle,shapeNone),colorWhite,0,L,IIf(Cover
AND
Buy,-30,-15));
>
PlotShapes(IIf(Cover,shapeHollowCircle,shapeNone),colorWhite,0,CoverPrice,0);
>
>
>
> ----- Original Message -----
> From:
electricwally77
> To: amibroker@xxxxxxxxxps.com
> Sent: Wednesday, November 05, 2008 8:17 PM
> Subject:
[amibroker] How to Enlarge BUY and SELL arrows on Chart
>
>
> Hello Members, I am trying to enlarge the buy and sell arrows on
my
> chart so they are easier to see. I understand that the larger
the
> arrows are (if possible), the harder it is to read the buy and
sell
> plots if there are many trades over a specific period.
>
> I would like to know if making the arrows larger is possible and
how.
> Thank you.
>
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