thanks for your help GP. I will look at your suggestion but it should be possible to program this exactly using the CBI. Have little time right now and will look at it later,
rgds, Ed ----- Original Message ----- From: gp_sydney To: [email protected] Sent: Sunday, August 19, 2007 3:57 AM Subject: [amibroker] Re: sigScaleOut Ed, Can't see your attachment, but where the two scale-outs are at the same bar, can't you just combine the position sizes for that bar so that the one scale-out signal has a larger position size? Similarly for the buy and scale-out at the same bar, can't you reduce the position size for the buy by the position size for the scale out and just take a smaller position for the buy signal? Regards, GP --- In [email protected], "Edward Pottasch" <[EMAIL PROTECTED]> wrote: > > hi, > > I wonder if somebody has been using the CBI (Custom backtester Interface) to perform a sigScaleOut (or sigScaleIn). Here is the problem: In a test setup I enter 3 contracts of ES futures. The code uses 3 targets and a trailing stop loss. In some cases it can work without using the CBI. However if the first sigScaleOut signal falls at the same bar where the trade is entered there is a problem because both the entry and the scaleOut are stored in the Buy array. > > Next problem that occurs is that if the first and the second scaleOut targets are hit during the same bar. Again we can only store one or the other. > > Using the low level CBI (I assume using ScaleTrade() ) can overcome this problem. Anyone know how to implement this? A simple example will do. > > Illustrated is the left entry signal scales out nicely (blue arrows) and the last contract is sold at the trailing stop. The second signal however both the first and the second scaleOut are at the bar following the entry bar (in this setup I do not allow to exit during the bar of entry). The backtester will sell only 1 contract at the scaleOut point and will sell 2 contracts at target number 3. This is wrong. > > thx, rgds, Ed >
