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Hello,
> The only safe way to count [and use it as a daily
function] is > through AddToComposite() function.This is NOT entirely
true.
The code you are using counts simply the number of items in
comma separated
list of tickers. There are 3 strings so the result is
thee.
BUT THERE IS NOTHING THAT PREVENTS US FROM COUNTING ON BAR BY
BAR BASIS
and this does NOT really require AddToComposite, see the code
below:
//Count tickers in watchlist
function <FONT
color=#008000>//For Indicator Builder<FONT
face="Courier New"> WatchlistNumber=<FONT
color=#0000ff>Param(<FONT
color=#ff00ff>"Watchlist",<FONT
color=#ff00ff>20,<FONT
color=#ff00ff>0,<FONT
color=#ff00ff>63,<FONT
color=#ff00ff>1) ;//enter
watchlist number
function<FONT
face="Courier New"> CountTickersInWatchList( Listnum ) {
// retrive comma-separated list
of symbols in watch list<FONT
color=#000000> list = <FONT
color=#0000ff>GetCategorySymbols( <FONT
color=#000000>categoryWatchlist<FONT
face="Courier New">, listnum );
Counter=0<FONT
color=#000000>; // INITIALIZE
COUNTER
for<FONT
color=#000000>( i = 0; (
sym = StrExtract( list, i
) ) != ""<FONT
color=#000000>; i++ )
{ <FONT
color=#008000>// TO COUNT BAR BY BAR YOU HAVE TO USE ARRAYS NOT
SCALAR<FONT
color=#008000> AND USE FOREIGN TO FIND OUT HOLES<FONT
face="Courier New"><FONT
color=#000000> Counter=Counter + ( <FONT
color=#000000>NOT <FONT
color=#0000ff>IsNull( <FONT
color=#0000ff>Foreign( sym, <FONT
color=#ff00ff>"C", <FONT
color=#000000>False<FONT
color=#000000> ) ) ); }
<FONT
color=#800000>return<FONT
color=#000000> Counter; } <FONT
color=#000000>Title=<FONT
color=#ff00ff>"Watchlist # "+<FONT
color=#0000ff>WriteVal(watchlistnumber,<FONT
color=#ff00ff>1)+" has
"+
CountTickersInWatchList( WatchlistNumber) + "
Tickers";
Plot<FONT
color=#000000>(CountTickersInWatchList( WatchlistNumber) ,<FONT
color=#ff00ff>"",<FONT
color=#ff00ff>1,<FONT
color=#ff00ff>1);
Plot(<FONT
color=#0000ff>Foreign(<FONT
color=#ff00ff>"~count",<FONT
color=#ff00ff>"v"),<FONT
color=#ff00ff>"",<FONT
color=#ff00ff>4,<FONT
color=#ff00ff>2);
Best regards,Tomasz
Janeczkoamibroker.com
----- Original Message -----
From: "DIMITRIS TSOKAKIS" <<A
href="">TSOKAKIS@xxxxxxxxx<FONT
size=2>>
To: <<A
href=""><FONT
size=2>amibroker@xxxxxxxxxxxxxxx>
Sent: Saturday, February 28, 2004 9:45 AM
Subject: [amibroker] Re: empty scan of a watchlist
(?)
> 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 <A
href=""><FONT
size=2>amibroker@xxxxxxxxxxxxxxx, "Anthony Faragasso"
<ajf1111@x<FONT
size=2>...> > 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" <<A
href="">dalengo@x<FONT
size=2>...>> > To: <<A
href=""><FONT
size=2>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 <A
href="">bugs@x...> >
> Send SUGGESTIONS to <FONT
size=2>suggest@x...> > >
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