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Viper Trading Systems Indicator

  #103 (permalink)

Capitol City,NC
 
 
Posts: 7 since Jan 2010
Thanks: 1 given, 0 received


tomgilb View Post
rubberduck,

Please explain why analysis based on reloaded charts would be far from accurate.

It seems to me that the script would react the same to the price action regardless, except for slippage and historical data errors. The backtest analysis should not be significantly different from what would have actually happened.

-Tom

Tom,
I think Zoethecus summed it up accurately, slippage is the problem. Accuracy is lost when the live and reloaded charts get out of sync.

When using the russell autotrader live, my entries were off 2-5 ticks from the reloaded chart. If the reloaded chart hit it's first target then headed in the other direction and hit breakeven then it's looking for another trade, but I'm still in the trade.

One day I was stopped out in around 10 seconds. The script fired a long trade, then the price started dropping very quickly. The reloaded chart fired a reverse while the price was dropping, but in live trading it didn't reverse. I was stopped out and the reloaded chart was still in the trade.

To be fair, some days the charts do sync up pretty closely.

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