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Hi there , complete AB newbie...evaluating it as we speak. Seems quite
decent thus far.
I have a few questions about the ATRStudy system posted a whule ago in
the AFL library. There is a comment there saying that the fellow
suspects it is suffering from crystal ball effect. however is the guy's
reasoning correct? His comment is:
http://amibroker.com/library/detail.php?id=135
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the BuyPrice and SellPrice:
===>BuyStop = Ref(Graph8,-1)+ ticker;
===>BuyPrice = Max(BuyStop,Low);
If I am reading this correctly if BuyStop is less than the low for the
day the BuyPrice is set to the low, but we can't buy at the low for the
day because the Buy is determined by the closing price.
****************************************************
If I remove the Max() on the BuyPrice the system doesnt change, which
makes sense to me....since the buy prices are always within the range of
the low/high for the day.
It seems to me it suffers from the effect because the following assume
the closing price, do they not? When graphing is the current day being
used or the previous? I'm a bit confused on that.
Buy = Cross(C,Graph8) AND C>Graph9 AND LinRegSlope(EMA(C,17),2)>0;
Sell = Cross(Graph8,C) AND LinRegSlope(C,2)<0;
Is it possible to make the Buy price be the avgof the next days
low/high? Or perhaps the opening price of the next day. That would be
for back-testing purposes since obviously I wont get a buy signal from
the program as is until the closing price for the day is know, by which
point it is of course too late to buy at the price the system figured
was "The Price". Same goes for selling.
It seems to me based on the running intraday price one could calculate
the graph on the fly and have this system work well by watching the
graph crossing....or am I missing a layer of complication that
implicitly needs the EOD data?
Thanks for any clarification
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