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Re: [amibroker] Inability to get correct values when switching time frames



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Try this:
 
TimeFrameSet( inDaily);

C1 = ref(C,-1) ;
C2 = ref(C,-2);
C3 = ref(C,-3);
C4 = ref(C,-4);
C5 = ref(C,-5);

TimeFrameRestore( ); //to go back to 3 minute interval
then try one of these:
 
C1 =  TimeFrameExpand( C1, inDaily);
C1 =  TimeFrameExpand( C1, inDaily, expandLast);
C1 =  TimeFrameExpand( C1, inDaily, expandFirst);
 
Plot ( C1, "Close -1", ParamColor( "Color", colorCycle ), ParamStyle("Style") );
 
and so on for C2, C3, etc. I wish I could tell you the difference between the 3 but I have not been able to really comprehend it after 3 days of working with it.


From: interfool <02@xxxxxxxxxxxxxxx>
To: amibroker@xxxxxxxxxxxxxxx
Sent: Tuesday, June 9, 2009 3:07:08 PM
Subject: [amibroker] Inability to get correct values when switching time frames

I am trying to switch timeframes from a 3 minute to a daily and then back on an exploration. I start off with a 3 minute interval. All I want to do with the daily interval is get the closing values of the last 5 bars. It acts really funny, despite trying different combinations of TimeFrameSet and TimeFrameExpand or Compress.

Shouldn't I just be able to do: (and have C1 thru C5 hold values or CD hold an array of daily values)

TimeFrameSet( inDaily);

C1 = ref(C,-1) ; //grab last 5 closing values on daily interval
C2 = ref(C,-2); //this does not work
C3 = ref(C,-3);
C4 = ref(C,-4);
C5 = ref(C,-5);
//or:
CD = C ; //CD should hold an array of daily values, but it doesn't work either…

TimeFrameRestore( ); //to go back to 3 minute interval

It seems to kinda work if I issue a TimeFrameExpand( C,in1minute) , but not really. When I run the exploration, the correct values only come up on later in the day iterations of the same stock. I want the last 5 values of the daily interval regardless of how often the stock comes up on the 3 minute interval. Any ideas?

Thanks,

interfool




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