[amibroker] Re: empty scan of a watchlist (?)

["DIMITRIS TSOKAKIS" <TSOKAKIS@xxxxxxxxx>]

Anthony,
One important detail !
The code counts the symbols of WLxx, it DOES NOT give the population 
of WLxx in daily basis.
If you have 3 tickers in WL20 and there are some missing data, the 
result will still be 3.
The only safe way to count [and use it as a daily function] is 
through AddToComposite() function.
Try to delete some quotations in WL20 stocks, run the
AddToComposite(1,"~count","v");
Buy=0;
for WL20 and then plot the
 //Count tickers in watchlist function
//For Indicator Builder
WatchlistNumber=Param("Watchlist",20,0,63,1) ;//enter watchlist number
function CountTickersInWatchList( Listnum )
{
// retrive comma-separated list of symbols in watch list
list = GetCategorySymbols( categoryWatchlist, listnum );
for( i = 0; ( sym = StrExtract( list, i ) ) != ""; i++ )
{
Count1=i;
}
return i;
}
Title="Watchlist # "+WriteVal(watchlistnumber,1)+" has "+
CountTickersInWatchList( WatchlistNumber) + " Tickers";
Plot(CountTickersInWatchList( WatchlistNumber) ,"",1,1);
Plot(Foreign("~count","v"),"",4,2); 
and you will see.
[We have a recent discussion with Stephane on the same subject.]
The reason should be simple: If WL20 includes IBM, INTC and MSFT, 
then there should be somewhere an inside  syntax 
WL20="IBM,INTC,MSFT", in other words WL20 should be nothing but a 
comma separated string. This fact does not include any info about 
missing [or excessive] bars.
Dimitris Tsokakis
--- In amibroker@xxxxxxxxxxxxxxx, "Anthony Faragasso" <ajf1111@xxxx> 
wrote:
> Dalengo,
> 
> Put this into Indicator builder, you can use  Parameter to select 
different
> watchlist....the total count will be in the title.
> 
> 
> //Count tickers in watchlist function
> 
> //For Indicator Builder
> 
> WatchlistNumber=Param("Watchlist",0,0,63,1) ;//enter watchlist 
number
> 
> function CountTickersInWatchList( Listnum )
> 
> {
> 
> // retrive comma-separated list of symbols in watch list
> 
> list = GetCategorySymbols( categoryWatchlist, listnum );
> 
> for( i = 0; ( sym = StrExtract( list, i ) ) != ""; i++ )
> 
> {
> 
> Count1=i;
> 
> }
> 
> return i;
> 
> }
> 
> Title="Watchlist # "+WriteVal(watchlistnumber,1)+" has "+
> 
> CountTickersInWatchList( WatchlistNumber) + " Tickers";
> 
> 
> 
> Anthony
> 
> ----- Original Message ----- 
> From: "dalengo" <dalengo@xxxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Friday, February 27, 2004 12:29 PM
> Subject: [amibroker] empty scan of a watchlist (?)
> 
> 
> > Hi,
> > Can someone help with the scan of a watchlist function?
> > I am trying a trivial counting of entries in N100 watchlist
> > by scanning the AFL AB 4.51.1:
> >
> > AddToComposite(1,"~COUNT","V");
> > Buy=0;
> >
> > N100 is in List0, and all entries in List0 are valid (display
> > properly).
> > I use filter:list0 in AA to aim AA at list0 per User Guide,
> > run the Scan and get nothing.
> > Run for CURRENT stock, get ~COUNT=1, run for ALL STOCKS, get
> > (in US-Stocks) ~COUNT=6592 on 2/23/04, again for one stock, get 1.
> > Run again on List0 using Filter: get nothing (old result remains
> > unchanged).
> >
> > What's wrong?
> >
> > Many thanks for your suggestions,
> > -Dalengo
> >
> >
> >
> > Send BUG REPORTS to bugs@xxxx
> > Send SUGGESTIONS to suggest@xxxx
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> 
> 
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