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The AB code is defined as:
// Vortex Indicator
// S&C Traders Tips Jan 2010
period = Param("Period", 14, 2 );
VMP = Sum( abs( H - Ref( L, -1 ) ), period );
VMM = Sum( abs( L - Ref( H, -1 ) ), period );
STR = Sum( ATR( 1 ), period );
VIP = VMP / STR;
VIM = VMM / STR;
Plot( VIP, "VI"+period+"+", colorBlue);
Plot( VIM, "VI"+period+"-", colorRed );
The system is defined as:
- Go long when the VI (or Dmi) goes from less than zero to greater than zero.
- Go short when the VI (or Dmi) goes from above zero to less than zero.
- All trades are placed "next day market on open."
That would translate to:
SetTradeDelays(1,1,1,1); // everything delayed 1 day
Buy = VIP > 0 AND Ref(VIP,-1) < 0;
BuyPrice = Open;
Sell = VIP < 0 and Ref(VIP,-1) > 0;
SellPrice = Open;
Short = Sell;
Cover = Buy;
That should do it - I've not tested this but it should be close.
--- In amibroker@xxxxxxxxxxxxxxx, Bob Waits <bobwaits2@xxx> wrote:
>
> I have the magazine and the formula, but it is only for the oscillator and not for a trading system, which Tradestation and Nuroshell have provided. I was wondering if anybody has used this as a system and tested the validity of this indicator.
>
>
>
>
>
>
> ________________________________
> From: droskill <droskill@xxx>
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Wed, December 30, 2009 8:15:57 PM
> Subject: [amibroker] Re: Vortex Indicator
>
>
> Here:
>
> http://www.traders. com/Documentatio n/FEEDbk_ docs/2010/ 01/TradersTips. html#TT4
>
> --- In amibroker@xxxxxxxxx ps.com, Bob Waits <bobwaits2@ ..> wrote:
> >
> > In the latest S&C magazine, there is a nice article on Vortex Indicator. While the formula for the indicator is listed in the magazine, I was wondering if anyone has written a code for turning this into a system and testing the validity of this indicator. The Tradestation and Nuroshell has code for an entry, exit and shorting strategies.
> >
> > Thanks.
> >
>
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