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[amibroker] Sum Reference Not Same as Simply Adding Previous Data Points Manually


  • Date: Fri, 05 Mar 2010 16:43:12 -0000
  • From: "davemabe2000" <davemabe@xxxxxxxxx>
  • Subject: [amibroker] Sum Reference Not Same as Simply Adding Previous Data Points Manually

PureBytes Links

Trading Reference Links

I'm trying to add the volume of the three previous bars (not including the current one) in my backtest.

If I sum them up "manually" I get one value:

VolumeSumA = Volume[i-1] + Volume[i-2] + Volume[i-3];

But when I try using Sum and Ref to do it I get a different value for some reason.

VolumeSumB = Sum(Ref(Volume, -1), 3);

But VolumeSumA != VolumeSumB.

What should I be using for Sum and Ref to get it to work properly and equal VolumeSumA above?



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