Re: [amibroker] Newbie Custom Indicator Question

["Chaudhry Mubashar Virk" <ch.mavirk@xxxxxxxxx>]

I have run a scan and a backtest with you code.

//////////////////////////////////////////////

function ElderBullPower( period )

{

return High - EMA(Close, period);

}

Plot( ElderBullPower( Param("Period", 20, 1, 100 ) ),_DEFAULT_NAME(), ParamColor("Color", ColorCycle ), styleNoTitle | ParamStyle("Histogram style", styleHistogram | styleNoLabel, maskHistogram ) );

Buy = ElderBullPower(20) < 0;

Sell = ElderBullPower(20) > 0;

/////////////////////////////////////////

 

AFL is fine and runs without any hitch. Are you using any other conditions?

 

From: cgrafham

Sent: Friday, July 11, 2008 1:07 PM

To: amibroker@xxxxxxxxxxxxxxx

Subject: [amibroker] Newbie Custom Indicator Question

I have written the following well-known indicator and saved it in the "Custom" folder as
"Elder Bull Power.afl"

function ElderBullPower( period )
{
return High - EMA(Close, period);
}

Plot( ElderBullPower( Param("Period", 20, 1, 100 ) ),_DEFAULT_NAME(), ParamColor("Color",
ColorCycle ), styleNoTitle | ParamStyle("Histogram style", styleHistogram | styleNoLabel,
maskHistogram ) );

I am having difficult using this indicator as part of system written in a differnet formula
file in the Systems folder.

I get a syntax error when using the below:

Buy = ElderBullPower(20) < 0;

It appears that the function is not known.

This is my attempt at wriing a custom indicator and using it as part of system, so I'm sure
I'm missing something fundemental...

Can any one see a problem?

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