Re: [amibroker] SPX Buy and Sell Signal

["Steve Dugas" <sjdugas@xxxxxxxxxxx>]

Hi Stan,
 
% is the modulus operator.  A = B % C 
says that A = the remainder when B is divided by C

I think you can find it in the AFL Reference Manual 
in the help files.
"anything % 2 == 0"  can 
be used to separate the evens from the odds, as I did 
below.
In the code below, each even numbered occurance of 
BUY (remainder == 0) is assigned to the sell array. Then the buy array is 
redefined to hold only the odd numbered buys.
I think you will find that it buys on the 1st buy 
signal (and all other odd numbered buys) and sells on the even numberd buys (in 
the original buy array). Please see the attached picture. Try setting AA to all 
quotes and "filter = 1;"
 
Steve
<BLOCKQUOTE 
>
  ----- Original Message ----- 
  <DIV 
  >From: 
  sjsolak 
  
  To: <A title=amibroker@xxxxxxxxxxxxxxx 
  href="">amibroker@xxxxxxxxxxxxxxx 
  Sent: Wednesday, October 01, 2003 12:59 
  PM
  Subject: Re: [amibroker] SPX Buy and Sell 
  Signal
  
  Steve,
  Thank you.  This is very close to what I 
  want.   The small problem is that it starts to buy on the 2nd event 
  and then sell on 3rd, etc.   I would prefer buy on 1st and sell on 
  2nd.  Other then that small problem, this is great.....
   
  I am trying to learn and understand 
  Amibroker.  I tried to look up what the % 2 is doing.  Could not 
  find anything on this.  Probably looking in the wrong place.   
  Doesn't seem to be in the help doc's.
   
  Thanks again.
  Stan
  <BLOCKQUOTE 
  >
    ----- Original Message ----- 
    <DIV 
    >From: 
    Steve 
    Dugas 
    To: <A title=amibroker@xxxxxxxxxxxxxxx 
    href="">amibroker@xxxxxxxxxxxxxxx 
    Sent: Wednesday, October 01, 2003 11:42 
    AM
    Subject: Re: [amibroker] SPX Buy and 
    Sell Signal
    
    Hi Stan - how about something like 
    this?
     
    fast=5;slow=6;
     
    FstC=EMA(C,fast);SloC=EMA(C,slow);Cond1 = 
    Cross(FstC,SloC);
     
    Buy= Cond1;Buys = Cum( Buy );Sell = Buy 
    AND Buys % 2 == 0;Buy = Buy AND NOT Sell;
     
    Filter= 
    C>1;AddColumn(Buy,"Buy");AddColumn( Buys, 
    "buys");AddColumn(Sell,"sell");AddColumn(FstC,"Fast 
    C");AddColumn(SloC,"Slow C");AddColumn(Cond1,"C Gt 
Av");
     
     
    Steve
     
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