--- In [email protected], "gmorlosky" <gmorlo...@...> wrote:
>
> Okay - I have gone over the array info and I think I'm doing this
right, But here it is step by step;
That's a bit more organized. :)
The only question I have is around step 4. How do you know if a ticker
is a "Buy". Is it if it meets some conditions for the visible bars or
is it for all time or some other date/time range or something else? If
it is on visible bars, the behavior might be a bit odd because as you
scroll symbols could be appearing and disappearing.
Here's something that will take a watch list as a parameter and plot the
relative performance of all symbols in the watch list if it meets a
criteria. Just modify ShouldPlot to return true or false depending on
your specific logic.
_SECTION_BEGIN("RelativePerformance");
function ShouldPlot(price)
{
//TODO: Implement logic
return True;
}
function GetWatchListSymbols(watchListName)
{
wlNumber = CategoryFind(watchListName, categoryWatchlist );
return CategoryGetSymbols(categoryWatchlist, wlNumber );
}
SetChartOptions(0,chartShowArrows|chartShowDates);
WatchListName = ParamStr("Watch List Name","RelStrength");
SymbolList = GetWatchListSymbols(WatchListName);
fvb = Status("firstvisiblebar");
ColorCode = colorBrown;
for( i = 0; ( sym = StrExtract( SymbolList, i ) ) != ""; i++ )
{
fc = Foreign(sym, "Close");
if (ShouldPlot(fc))
{
ColorCode++;
// wrap color codes if too many
if (ColorCode == colorTan)
{
ColorCode = colorBrown;
}
Plot( 100 * ( fc - fc[ fvb ] )/ fc[ fvb ], sym, ColorCode,
styleLine);
}
}
_N( Title = "{{NAME}} {{DATE}} - Relative Performance [%]: {{VALUES}}"
);
_SECTION_END();
Tuzo
> 1. Deteremine BUY based on criteria and assign value of 1 else 0.
(works fine)
> 2. Determeine SELL based on criteria and assign value of -1 else
0.(works fine - these values are now stored in the array)
> 3. From a given list (example: IndustryID() == 4) (the StrExtract
works fine).
> 4. PLOT only those tickers that meet BUY. (I get all or none)
> 5. Plot each ticker in a different color, in the same pane, hence the
inner loop. (the colors plot fine)
>
> Basically it is the Relative Performance indicator, with a BUY
criteria and StrExtract from any given list (sector, Industry, watch,
etc.), because of the multiple plots, Foreign is used.
>
>
>
> --- In [email protected], dingo waledingo@ wrote:
> >
> > write it out step by step in English. I'm not uderstanding what you
want to
> > do.
> >
> > d
> >
> > On Thu, May 7, 2009 at 4:37 PM, gmorlosky gmorlosky@ wrote:
> >
> > > Thanks - clearly I got something backwards - while I study arrays,
do you
> > > have an example of code similar to this that works, to help me
understand ?
> > > I just want to loop through certain tickers that pass some formula
first.
> > > Basically a loop inside a loop.
> > >
> > >
> > > --- In [email protected], dingo <waledingo@> wrote:
> > > >
> > > > You've got a basic misunderstanding of loops and arrays. In AFL
You
> > > > shouldn't have arrary operators like IIF inside a loop.
> > > >
> > > > You need to go back an reread the help file on arrays.
> > > >
> > > > d
> > > >
> > > >
> > > > On Thu, May 7, 2009 at 3:32 PM, gmorlosky <gmorlosky@> wrote:
> > > >
> > > > > Seriously - it works nicely, except for that one line of code.
> > > > >
> > > > > Any other thoughts
> > > > >
> > > > > --- In [email protected], Aron <aron.groups@> wrote:
> > > > > >
> > > > > > everything..
> > > > > >
> > > > > > gmorlosky wrote:
> > > > > > > In the line ~9 "if(Buy[i] >= 0", if I change that to 1,
which is
> > > equal
> > > > > to a Buy, I get no Plots, even though the Explore shows 1s for
half the
> > > > > tickers, else with 0, I get all plots. What is wrong ?
> > > > > > >
> > > > > > > NumBars = 20;
> > > > > > > fvb = Status("firstvisiblebar");
> > > > > > > for( i = 0; ( symbol = StrExtract( TickerList, i ) ) !=
""; i++ )
> > > > > > > {
> > > > > > > Buy = IIf(ROCt > ROCc AND RSIt > RSIc, 1,0);
> > > > > > > Sell = IIf(ROCt < ROCc AND RSIt < RSIc, -1,0);
> > > > > > >
> > > > > > > fc = Foreign( symbol, "C" );
> > > > > > > if (Buy[i] >= 0) // something not right here ???
> > > > > > > {
> > > > > > > if( ! IsNull( fc[ 0 ] ) )
> > > > > > > {
> > > > > > > Plot( 100 * ( fc - fc[ fvb ] )/ fc[ fvb ], symbol,
> > > colorLightOrange
> > > > > + ( (2*i) % 15 ), styleLine );
> > > > > > > }
> > > > > > > }
> > > > > > > }
> > > > > > >
> > > > > > >
> > > > > > >
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