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Ronbo,
Try the following:
CategoryRemoveSymbol( "", categoryWatchlist, 0 );
CategoryRemoveSymbol( "", categoryWatchlist, 1 );
Buy=Cross( MACD(), Signal() );
//Sell=Cross(Signal(), MACD() );
Filter=Buy;
AddColumn (Buy, "test");
if (LastValue(Buy) == 1)
{
CategoryAddSymbol("", categoryWatchlist, 0);
}
Using the Lastvalue() function and compare operator "==" seemed to
do it. The conditional IF needs to have numeric values to work
properly.
I hopes this answers most of your questions.
Perry
--- In amibroker@xxxxxxxxxxxxxxx, "ronbo" <ronbo@xxxx> wrote:
> i have been trying for day, all kinds of combinations of IIF, and
If to get
> CategoryAddSymbol("",categoryWatchlit, 0) to write ONLY the
symbols meeting
> the Buy criteria, and to get CategoryAddSymbol
("",categoryWatchlit, 1) to
> write ONLY the symbols meeting the Sell criteria.
>
> I have used Filter=Buy or Filter=Sell immediately before the above
commands,
> but i ALWAYS get the whole list of symbols written into Watch list
0 or 1.
> What am i doing wrong with the Filter? or the CAS command??
>
> My simple code is:
>
> CategoryRemoveSymbol( "", categoryWatchlist, 0 );
> CategoryRemoveSymbol( "", categoryWatchlist, 1 );
> Buy=Cross( MACD(), Signal() );
> //Sell=Cross(Signal(), MACD() );
>
> Filter=Buy;
> AddColumn (Buy, "test");
> CategoryAddSymbol("", categoryWatchlist, 0);
>
> The Filter works for the Column in the Explore Result---only Buys
are shown,
> and in the "test" column, only a "1" is shown, but All scanned
symbols are
> in Watchlist 0.
>
> i'm missing something serious here. it probably has something to
do with
> Arrays, and requirement of the IIf and if, then, else commands
which i do
> not understand.
>
> Not only would i like the code, or a real pointer what i am doing
wrong, but
> i would like an explanation what is the correct way---or point me
to a web
> page, help section.
>
> i would like, using scan or exploration:
> 1. a test of Buy to write the symbol into Watchlist 0,
> 2. a test of Sell to write the symbol into Watchlist 1,
>
> AND caution--if you are going to copy this code to try it, change
the watch
> list numbers--0 and 1--otherwise you will delete your current
watchlists---0
> and 1.
>
> thanks much for the help,
> ron
>
> ---
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