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Hello,
This is because sinc (section increment) is set to 10.
Section increment is special trick that allows to drag-drop
multiple copies of the same formula and each will have
different default depending on section number.
As your section has number 1 (this 1 at the end "EMA1")
the default value is 30 + 1 * 10 = 40.
You can prevent it if you don't use section increment:
_SECTION_BEGIN("EMA1");
P = ParamField("Price field",-1);
Periods = Param("Periods", 30, 2, 200, 1 ); // no section increment parameter here
Plot( EMA( P, Periods ), _DEFAULT_NAME(), ParamColor( "Color",
colorCycle ), ParamStyle("Style") );
_SECTION_END();
http://www.amibroker.com/f?param
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "keithmccombs" <kmccombs@xxxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Friday, September 02, 2005 12:29 AM
Subject: [amibroker] Default value of Param
> When I use the code below to display a chart the value of Periods is
> initially 40 instead of 30 which I expect. If, however, I comment
> out
> the _SECTION_BEGIN("EMA1"); and _SECTION_END(); statements, the
> initial
> value is 30 as I expected. Can someone explain:
>
> 1. What is going on here?
> 2. Is there a way to make the initial value 30?
>
> _SECTION_BEGIN("EMA1");
> P = ParamField("Price field",-1);
> Periods = Param("Periods", 30, 2, 200, 1, 10 );
> Plot( EMA( P, Periods ), _DEFAULT_NAME(), ParamColor( "Color",
> colorCycle ), ParamStyle("Style") );
> _SECTION_END();
>
> TIA.
> -- Keith
>
>
>
>
>
>
>
> 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
>
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