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Tomasz,
It seems we speak different languages, or you use another
piece of software !!
I created a WL20 with ^NDX, AAPL and AMZN, deleted the last 5
AAPL quotations , scan for WL20 the
AddToComposite(1<FONT
size=2>,"~count",<FONT
size=2>"V");Buy=0<FONT
size=2>;
and then pasted in IB y o u r c o d
e
//Count tickers in watchlist function
//For Indicator Builder
WatchlistNumber=Param(<FONT
size=2>"Watchlist",20<FONT
size=2>,0,<FONT
size=2>63,1)
;//enter watchlist number
function CountTickersInWatchList( Listnum )
{
// retrive comma-separated list of symbols in watch list
list = GetCategorySymbols(
categoryWatchlist, listnum );
Counter=0; //
INITIALIZE COUNTER
for( i = <FONT
size=2>0; ( sym = StrExtract<FONT
size=2>( list, i ) ) != ""; i++ )
{
// TO COUNT BAR BY BAR YOU HAVE TO USE ARRAYS NOT SCALAR
AND USE FOREIGN TO FIND OUT HOLES
Counter=Counter + ( NOT IsNull(
Foreign( sym, <FONT
size=2>"C", False ) ) );
}
return Counter;
} Title="Watchlist # "+<FONT
size=2>WriteVal(watchlistnumber,<FONT
size=2>1)+" has "+
CountTickersInWatchList( WatchlistNumber) + "
Tickers";
Plot(CountTickersInWatchList( WatchlistNumber)
,"",1<FONT
size=2>,1);
Plot(Foreign<FONT
size=2>("~count",<FONT
size=2>"v"),""<FONT
size=2>,4,<FONT
size=2>2);
The result is in the att. gif.
This is my amibroker 4.50.6 graph.[My base index is ^NDX]
Dimitris Tsokakis
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