Re: [amibroker] Simple Question : How do I specify the previous day's price

["emp62" <emp62@xxxxxxx>]

you have to set your mind to think in terms of arrays. 

 

I changed the code somewhat. You requested:  " .... and the volume for those down days was below average (50 day)". 

This I coded like:  AND MA(V,3) < MA(V,50)

 

but should be: AND HHV(V,3) < MA(V,50)   which will be true if the highest volume of the last 3 bars is less then MA-50.

 

so the code becomes:

 

 

condition = BarsSince( C > Ref(C,-1)) == 3 AND HHV(V,3) < MA(V,50);

WriteVal(LLV(V,3));
WriteVal(MA(V,50));

Buy = Ref(condition,-1); BuyPrice = O;

SetChartOptions(0, chartShowDates);
Plot(C,"C",1,64);
PlotShapes(IIf(Buy,shapeUpArrow,0),colorWhite, layer = 0, yposition = BuyPrice, offset = 0 );

 

 

 

 

 

----- Original Message -----

From: "Tomas" <tomas986@xxxxxxxxx>

To: <amibroker@xxxxxxxxxxxxxxx>

Sent: Wednesday, April 05, 2006 5:41 AM

Subject: Re: [amibroker] Simple Question : How do I specify the previous day's price

> Thanks Ed!!
>
> I can see that this is going to take me awhile to learn AFL.  Damn, I thought I am an engineer
> with programming experience, so would not have difficulty getting use to AFL.  That does not seem
> to be the case...
>
> Ok, back to reading the User Guide and more examples...
>
>
> thanks again Ed,
> tomas
>
>
> --- emp62 <emp62@xxxxxxx> wrote:
>
>> you can code that like:
>>
>> condition = BarsSince( C > Ref(C,-1)) == 3 AND MA(V,3) < MA(V,50);
>>
>> Buy = Ref(condition,-1); BuyPrice = O;
>>
>> SetChartOptions(0, chartShowDates);
>> Plot(C,"C",1,64);
>> PlotShapes(IIf(Buy,shapeUpArrow,0),colorWhite, layer = 0, yposition = BuyPrice, offset = 0 );
>>
>>
>> rgds, Ed
>>
>>
>> ----- Original Message -----
>> From: "Tomas" <tomas986@xxxxxxxxx>
>> To: <amibroker@xxxxxxxxxxxxxxx>
>> Sent: Monday, April 03, 2006 1:43 AM
>> Subject: [amibroker] Simple Question : How do I specify the previous day's price
>>
>>
>> > Hi,
>> >
>> > I just registered Amibroker a week ago, and in the process of testing out some of the
>> features.
>> >
>> > I spent the last few hours trying to figure this issue out, but have no luck.  This is a
>> simple
>> > thing, but the array concept of AFL is a little confusing to me.
>> >
>> > My issue is that I want to write simple buy signal that goes like this:
>> >
>> > Buy:
>> > - when the has been three down days in a row
>> > - and the volume for those down days was below average (50 day)
>> >
>> > How would you right an AFL buy signal for that?
>> >
>> > My problem is that I don't know how to specify the previous day's price and previuos, previous
>> > day's price.
>> >
>> > Thanks for the help in advance.
>> > tomas
>> >
>> >
>> >
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>> >
>> >
>> >
>> >
>> >
>
>
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