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[amibroker] Re: to HERMAN: N100 Correlation table



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Since I started losing column names around 625 columns, I incorrectly
assumed there was a limit.  

I should have known better:

THERE IS NO LIMIT FOR Almighty AmiBroker.

But poor Excel and I cannot handle that large matrix.
Considering my proficiency in Perl, I'd still prefer in a columnal
form ( security1, security2 and correaltion columns ) for easy
sorting.

Any help would be appreciated.

ysk

--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <amibroker@xxxx>
wrote:
> Hello,
> 
> The limit of 100 columns has been removed from AmiBroker.
> 
> Although there is no limit anymore things get very slow when having
> thousand columns in the result list.
> 
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message ----- 
> From: "qqqqq_99999_qqqqq" <qqqqq_99999_qqqqq@xxxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Tuesday, December 30, 2003 2:41 AM
> Subject: [amibroker] Re: to HERMAN: N100 Correlation table
> 
> 
> > Thank you, Herman,  for your reply.
> > 
> > It would work if the matrix was 100 x 100.
> > But I'm thinking more like a 1000 x 1000 matrix.  
> > It's beyond max columns of AmiBroker and Excel.
> > 
> > ysk
> > 
> > --- In amibroker@xxxxxxxxxxxxxxx, "Herman vandenBergen"
<psytek@xxxx>
> > wrote:
> > > It would be a very long column...about 100x100 combinations. It
is
> > easier to
> > > copy-n-past the results to Excel and use an Excel formula to
find
> > the max,
> > > like Max(...xy data range ...) and/or use Excel Conditional
> > formating to
> > > color cells according to the limits.
> > > 
> > > DT recently posted a nice solution to extract the highest values
> > from the
> > > table... I think that might do exactly what you want.
> > > 
> > > herman
> > >   -----Original Message-----
> > >   From: qqqqq_99999_qqqqq [mailto:qqqqq_99999_qqqqq@x...]
> > >   Sent: December 30, 2003 8:14 AM
> > >   To: amibroker@xxxxxxxxxxxxxxx
> > >   Subject: [amibroker] Re: to HERMAN: N100 Correlation table
> > > 
> > > 
> > >   Hi,
> > > 
> > >   Is there any way to create a correlation table in a columnal
form
> > (
> > >   security1, security2 and correaltion columns ) for easy
sorting?
> > > 
> > >   ysk
> > > 
> > >   --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko"
> > <amibroker@xxxx>
> > >   wrote:
> > >   > Hello,
> > >   >
> > >   > The code is written in ineffective way because it calls
Foreign
> > for
> > >   CURRENT security while it is not necessary at all.
> > >   > Also it performs two loops when only one is needed.
> > >   >
> > >   > More efficient version is here:
> > >   >
> > >   > Filter = Status("LastBarInTest");
> > >   > list = GetCategorySymbols( categoryWatchlist, 0 );
> > >   >
> > >   > AddTextColumn(Name(),"Correlation",1.0);
> > >   > Ticker1= Name();
> > >   >
> > >   > for( Col=0; (Ticker2=StrExtract( List, Col))!= ""; Col++)
> > >   > {
> > >   >    Var2 = Foreign(Ticker2,"C");
> > >   >    Corr = Correlation( C, Var2, 8 );
> > >   >    Color = IIf(Corr>0, colorBrightGreen, IIf(Corr<0,
> > >   colorRed,colorWhite));
> > >   >    Color = IIf(Ticker1==Ticker2, 1, Color);
> > >   >    AddColumn( Corr, Ticker2, 1.3, 1, Color);
> > >   > }
> > >   >
> > >   > Hope this helps.
> > >   >
> > >   > Best regards,
> > >   > Tomasz Janeczko
> > >   > amibroker.com
> > >   >   ----- Original Message -----
> > >   >   From: Herman vandenBergen
> > >   >   To: amibroker@xxxxxxxxxxxxxxx
> > >   >   Sent: Friday, November 28, 2003 10:24 AM
> > >   >   Subject: RE: [amibroker] Re: to HERMAN: N100 Correlation
table
> > >   >
> > >   >
> > >   >   Very nice DT, thanks! I'll be using that frequently.
Below is
> > what
> > >   the Correlation matrix, with help from the list, developed
into.
> > >   >     // Exploration to create Correlation matrix
> > >   >     Buy=Sell=Short=Cover=0;
> > >   >     Filter = Status("LastBarInTest");
> > >   >     list = GetCategorySymbols( categoryWatchlist, 2 );
> > >   >     for( NumTickers=0; (StrExtract( list, NumTickers )) !=
"";
> > >   NumTickers++ );
> > >   >     AddTextColumn(Name(),"Ticker",1.0);
> > >   >     for( Col=0; Col<NumTickers; Col++)
> > >   >        {
> > >   >        Ticker1 = Name();
> > >   >        Ticker2 = StrExtract( list, Col);
> > >   >        Var1 = Foreign(Ticker1,"C");
> > >   >        Var2 = Foreign(Ticker2,"C");
> > >   >        Test = Correlation( Var1, Var2, 8 );
> > >   >        Color = IIf(Test>0, colorBrightGreen, IIf(Test<0,
> > colorRed,
> > >   colorWhite));
> > >   >        Color = IIf(Ticker1==Ticker2, 1, Color);
> > >   >        AddColumn( Test, Ticker2, 1.3, 1, Color);
> > >   >        }
> > >   >
> > >   >
> > >   >
> > >   >     -----Original Message-----
> > >   >     From: DIMITRIS TSOKAKIS [mailto:TSOKAKIS@x...]
> > >   >     Sent: November 28, 2003 1:46 PM
> > >   >     To: amibroker@xxxxxxxxxxxxxxx
> > >   >     Subject: [amibroker] Re: to HERMAN: N100 Correlation
table
> > >   >
> > >   >
> > >   >     Herman,
> > >   >     There is no need to write the 100 tickers. If they
belong to
> > >   WL10,
> > >   >     then
> > >   >     list = GetCategorySymbols( categoryWatchlist, 10 );
> > >   >     tickerlist="";
> > >   >     for( i = 0; ( sym = StrExtract( list, i ) ) != ""; i++ )
> > >   >     {
> > >   >     tickerlist=tickerlist+sym+",";
> > >   >     }
> > >   >     Title=tickerlist;
> > >   >     The advantage is that you don't have to correct the code
> > after
> > >   any
> > >   >     N100 change, it is done automatically as soon as you
correct
> > >   WL10.
> > >   >     Note also that StrExtract()  needs a "comma-separated
list
> > of
> > >   items",
> > >   >     that's why the above +",".
> > >   >     The result will have a "," at the end, but this is not a
> > >   problem.
> > >   >     Dimitris Tsokakis
> > >   >     --- In amibroker@xxxxxxxxxxxxxxx, "Dave Merrill"
> > >   <dmerrill@xxxx>
> > >   >     wrote:
> > >   >     > I've lost track of the original context, but could
you do
> > this
> > >   even
> > >   >     more
> > >   >     > easily by iterating through the tickers in a known
> > watchlist?
> > >   >     >
> > >   >     > Dave
> > >   >     >
> > >   >     >   this is actually the "data" type statement I have
been
> > >   looking
> > >   >     for....
> > >   >     > wanted to store individual thresholds in some easy
way -
> > this
> > >   is
> > >   >     easier than
> > >   >     > a file system :-)
> > >   >     >
> > >   >     >   herman
> > >   >     >     -----Original Message-----
> > >   >     >     From: Tomasz Janeczko [mailto:amibroker@x...]
> > >   >     >     Sent: November 28, 2003 7:37 AM
> > >   >     >     To: amibroker@xxxxxxxxxxxxxxx
> > >   >     >     Subject: Re: [amibroker] Re: to HERMAN: N100
> > Correlation
> > >   table
> > >   >     >
> > >   >     >
> > >   >     >     Hello,
> > >   >     >
> > >   >     >     It would be shorter to write this that way:
> > >   >     >
> > >   >     >     TickerList =
> > >   >     >
> > >   "AAPL,ADBE,ADCT,ALTR,AMAT,AMG,AMZ,APCC,APOL,BB
> > BY,BEAS,BIIB,BMET,BRCD
> > >   >     ,BRCM,CD
> > >   >     > WC,CEPH,"+
> > >   >     >
> > >   >     >
> > >   "CHIR,CHKP,CHRW,CIE,CMCSA,CMVT,COST,CPWR,CSCO,
> > CTAS,CTXS,DELL,DISH,DL
> > >   >     TR,EBAY,
> > >   >     > ERICY,ERTS,"+
> > >   >     >
> > >   >     >
> > >   "ESRX,EXPD,FAST,FHCC,FISV,FLEX,GEZ,GILD,GTX,HG
> > SI,HSIC,IACI,ICOS,ITC,
> > >   >     ITU,IVG,
> > >   >     > JDSU,JPR,KLAC,"+
> > >   >     >
> > >   >     >
> > >   "LAMR,LLTC,LCR,MCHP,MEDI,MERQ,MLM,MST,MOLX,MSF
> > T,MXIM,TAP,VDA,VLS,XTL
> > >   >     ,ORCL,PA
> > >   >     > YX,PCAR,PDCO,"+
> > >   >     >
> > >   >     >
> > >   "PETM,PIXR,PSFT,PTE,QCOM,QLGC,RFMD,ROST,RYAAY,
> > SAM,SBUX,SEBL,SIAL,SDK
> > >   >     ,SPS,SPL
> > >   >     > S,SPOT,SSCC,"+
> > >   >     >     "SUW,SYMC,TEVA,TLAB,VRS,VRTS,WFMI,XLX,XRAY,YHOO";
> > >   >     >
> > >   >     >     Ticker = StrExtract( TickerList, n );
> > >   >     >
> > >   >     >     Hope this helps.
> > >   >     >
> > >   >     >     Best regards,
> > >   >     >     Tomasz Janeczko
> > >   >     >     amibroker.com
> > >   >     >       ----- Original Message -----
> > >   >     >       From: dirk schreiber
> > >   >     >       To: amibroker@xxxxxxxxxxxxxxx
> > >   >     >       Sent: Thursday, November 27, 2003 9:58 PM
> > >   >     >       Subject: Re: [amibroker] Re: to HERMAN: N100
> > Correlation
> > >   table
> > >   >     >
> > >   >     >
> > >   >     >       hi nand,
> > >   >     >
> > >   >     >       the #include file was posted by herman before,
it
> > goes
> > >   like
> > >   >     this:
> > >   >     >
> > >   >     >       // Include file
> > >   >     >       Ticker =
> > >   >     >       WriteIf(n==0 , "AAPL",
> > >   >     >       WriteIf(n==1 , "ADBE",
> > >   >     >       WriteIf(n==2 , "ADCT",
> > >   >     >       WriteIf(n==3 , "ALTR",
> > >   >     >       WriteIf(n==4 , "AMAT",
> > >   >     >       WriteIf(n==5 , "AMGN",
> > >   >     >       WriteIf(n==6 , "AMZN",
> > >   >     >       WriteIf(n==7 , "APCC",
> > >   >     >       WriteIf(n==8 , "APOL",
> > >   >     >       WriteIf(n==9 , "BBBY",
> > >   >     >       WriteIf(n==10 , "BEAS",
> > >   >     >       WriteIf(n==11 , "BIIB",
> > >   >     >       WriteIf(n==12 , "BMET",
> > >   >     >       WriteIf(n==13 , "BRCD",
> > >   >     >       WriteIf(n==14 , "BRCM",
> > >   >     >       WriteIf(n==15 , "CDWC",
> > >   >     >       WriteIf(n==16 , "CEPH",
> > >   >     >       WriteIf(n==17 , "CHIR",
> > >   >     >       WriteIf(n==18 , "CHKP",
> > >   >     >       WriteIf(n==19 , "CHRW",
> > >   >     >       WriteIf(n==20 , "CIEN",
> > >   >     >       WriteIf(n==21 , "CMCSA",
> > >   >     >       WriteIf(n==22 , "CMVT",
> > >   >     >       WriteIf(n==23 , "COST",
> > >   >     >       WriteIf(n==24 , "CPWR",
> > >   >     >       WriteIf(n==25 , "CSCO",
> > >   >     >       WriteIf(n==26 , "CTAS",
> > >   >     >       WriteIf(n==27 , "CTXS",
> > >   >     >       WriteIf(n==28 , "DELL",
> > >   >     >       WriteIf(n==29 , "DISH",
> > >   >     >       WriteIf(n==30 , "DLTR",
> > >   >     >       WriteIf(n==31 , "EBAY",
> > >   >     >       WriteIf(n==32 , "ERICY",
> > >   >     >       WriteIf(n==33 , "ERTS",
> > >   >     >       WriteIf(n==34 , "ESRX",
> > >   >     >       WriteIf(n==35 , "EXPD",
> > >   >     >       WriteIf(n==36 , "FAST",
> > >   >     >       WriteIf(n==37 , "FHCC",
> > >   >     >       WriteIf(n==38 , "FISV",
> > >   >     >       WriteIf(n==39 , "FLEX",
> > >   >     >       WriteIf(n==40 , "GENZ",
> > >   >     >       WriteIf(n==41 , "GILD",
> > >   >     >       WriteIf(n==42 , "GNTX",
> > >   >     >       WriteIf(n==43 , "HGSI",
> > >   >     >       WriteIf(n==44 , "HSIC",
> > >   >     >       WriteIf(n==45 , "IACI",
> > >   >     >       WriteIf(n==46 , "ICOS",
> > >   >     >       WriteIf(n==47 , "INTC",
> > >   >     >       WriteIf(n==48 , "INTU",
> > >   >     >       WriteIf(n==49 , "IVGN",
> > >   >     >       WriteIf(n==50 , "JDSU",
> > >   >     >       WriteIf(n==51 , "JNPR",
> > >   >     >       WriteIf(n==52 , "KLAC",
> > >   >     >       WriteIf(n==53 , "LAMR",
> > >   >     >       WriteIf(n==54 , "LLTC",
> > >   >     >       WriteIf(n==55 , "LNCR",
> > >   >     >       WriteIf(n==56 , "MCHP",
> > >   >     >       WriteIf(n==57 , "MEDI",
> > >   >     >       WriteIf(n==58 , "MERQ",
> > >   >     >       WriteIf(n==59 , "MLNM",
> > >   >     >       WriteIf(n==60 , "MNST",
> > >   >     >       WriteIf(n==61 , "MOLX",
> > >   >     >       WriteIf(n==62 , "MSFT",
> > >   >     >       WriteIf(n==63 , "MXIM",
> > >   >     >       WriteIf(n==64 , "NTAP",
> > >   >     >       WriteIf(n==65 , "NVDA",
> > >   >     >       WriteIf(n==66 , "NVLS",
> > >   >     >       WriteIf(n==67 , "NXTL",
> > >   >     >       WriteIf(n==68 , "ORCL",
> > >   >     >       WriteIf(n==69 , "PAYX",
> > >   >     >       WriteIf(n==70 , "PCAR",
> > >   >     >       WriteIf(n==71 , "PDCO",
> > >   >     >       WriteIf(n==72 , "PETM",
> > >   >     >       WriteIf(n==73 , "PIXR",
> > >   >     >       WriteIf(n==74 , "PSFT",
> > >   >     >       WriteIf(n==75 , "PTEN",
> > >   >     >       WriteIf(n==76 , "QCOM",
> > >   >     >       WriteIf(n==77 , "QLGC",
> > >   >     >       WriteIf(n==78 , "RFMD",
> > >   >     >       WriteIf(n==79 , "ROST",
> > >   >     >       WriteIf(n==80 , "RYAAY",
> > >   >     >       WriteIf(n==81 , "SANM",
> > >   >     >       WriteIf(n==82 , "SBUX",
> > >   >     >       WriteIf(n==83 , "SEBL",
> > >   >     >       WriteIf(n==84 , "SIAL",
> > >   >     >       WriteIf(n==85 , "SNDK",
> > >   >     >       WriteIf(n==86 , "SNPS",
> > >   >     >       WriteIf(n==87 , "SPLS",
> > >   >     >       WriteIf(n==88 , "SPOT",
> > >   >     >       WriteIf(n==89 , "SSCC",
> > >   >     >       WriteIf(n==90 , "SUNW",
> > >   >     >       WriteIf(n==91 , "SYMC",
> > >   >     >       WriteIf(n==92 , "TEVA",
> > >   >     >       WriteIf(n==93 , "TLAB",
> > >   >     >       WriteIf(n==94 , "VRSN",
> > >   >     >       WriteIf(n==95 , "VRTS",
> > >   >     >       WriteIf(n==96 , "WFMI",
> > >   >     >       WriteIf(n==97 , "XLNX",
> > >   >     >       WriteIf(n==98 , "XRAY",
> > >   >     >       WriteIf(n==99 , "YHOO" , ""
> > >   >     >
> > >   ))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
> > >   >     ))))))))
> > >   >     > ))))))))))))))))))))))))))))));
> > >   >     >
> > >   >     >       dirk
> > >   >     >         ----- Original Message -----
> > >   >     >         From: nkis22
> > >   >     >         To: amibroker@xxxxxxxxxxxxxxx
> > >   >     >         Sent: Thursday, November 27, 2003 5:16 PM
> > >   >     >         Subject: [amibroker] Re: to HERMAN: N100
> > Correlation
> > >   table
> > >   >     >
> > >   >     >
> > >   >     >         Will appreciate very much to see the #include
AFL
> > >   please
> > >   >     >         thanks in advance
> > >   >     >         nand
> > >   >     >
> > >   >     >
> > >   >     >
> > >   >     >
> > >   >     >
> > >   >     >
> > >   >     >
> > >   >     >
> > >   >     >         --- In amibroker@xxxxxxxxxxxxxxx, dirk
schreiber
> > >   >     <tianatrading@xxxx>
> > >   >     >         wrote:
> > >   >     >         > hello herman,
> > >   >     >         >
> > >   >     >         > after playing around with your code a little
> > bit, i
> > >   >     realized that
> > >   >     >         it is not showing a COMPLETE "heat list" of
the
> > n100.
> > >   >     by "splitting
> > >   >     >         up" the 100 stocks into two groups of 50, one
for
> > the
> > >   x-
> > >   >     axis and the
> > >   >     >         other for the y-axis, we can't get the whole
> > picture.
> > >   the
> > >   >     first
> > >   >     > stock
> > >   >     >         (AAPL) has its correlation only measured
against
> > >   stocks 50-
> > >   >     99(JDSU-
> > >   >     >         YHOO), but not for example against ADBE or
ADCT.
> > >   >     >         > thanks to posting your code i am beginning
to
> > >   understand
> > >   >     the logic
> > >   >     >         of looping better, so i just changed some
numbers
> > to
> > >   have
> > >   >     the loop
> > >   >     > go
> > >   >     >         through ALL possible combinations. it takes
> > slightly
> > >   longer
> > >   >     (instead
> > >   >     >         of 50*50=2500 it's 100*100=10000 calculations)
> > and of
> > >   >     course it has
> > >   >     >         quite a lot of duplicate results, but i think
it
> > is
> > >   the
> > >   >     only way to
> > >   >     >         calculate all correlations.
> > >   >     >         > also, i changed the code from absolute to
> > relative
> > >   >     correlation,
> > >   >     >         which gives different results.
> > >   >     >         >
> > >   >     >         > what do you think?
> > >   >     >         >
> > >   >     >         > dirk
> > >   >     >         >
> > >   >     >         >
> > >   >     >         >
> > >   >     >         > // Exploration N100 relative Correlation
table
> > >   >     >         >
> > >   >     >         > Buy=Sell=Short=Cover=0;
> > >   >     >         >
> > >   >     >         > StkNum = Status("StockNum");
> > >   >     >         >
> > >   >     >         > Filter = Status("LastBarInTest") AND StkNum
<
> > 100;
> > >   >     >         >
> > >   >     >         > AddTextColumn(Name(),"Ticker",1.0);
> > >   >     >         >
> > >   >     >         > SetOption("nodefaultcolumns",1);
> > >   >     >         >
> > >   >     >         > n = StkNum;
> > >   >     >         >
> > >   >     >         > #include <NtoN100Ticker.afl>
> > >   >     >         >
> > >   >     >         > Ticker1 = Ticker;
> > >   >     >         >
> > >   >     >         > C1 = ROC(Foreign(Ticker1,"C"),1);
> > >   >     >         >
> > >   >     >         > for(m=1;m<=99;m++)
> > >   >     >         >
> > >   >     >         > {
> > >   >     >         >
> > >   >     >         > n=m;
> > >   >     >         >
> > >   >     >         > #include <NtoN100Ticker.afl>
> > >   >     >         >
> > >   >     >         > Ticker2 = Ticker;
> > >   >     >         >
> > >   >     >         > C2 = ROC(Foreign(Ticker2,"C"),1);
> > >   >     >         >
> > >   >     >         > Corr = Correlation(C1, C2, 8 );
> > >   >     >         >
> > >   >     >         > Color = IIf(Corr>0.7,8,4); // Add colors to
> > make a
> > >   heat
> > >   >     map
> > >   >     >         >
> > >   >     >         > AddColumn(Corr,Ticker,1.3,1,Color);
> > >   >     >         >
> > >   >     >         > }
> > >   >     >         >
> > >   >     >         >
> > >   >     >         >   ----- Original Message -----
> > >   >     >         >   From:   Herman vandenBergen
> > >   >     >         >   To: amibroker@xxxxxxxxxxxxxxx
> > >   >     >         >   Sent: Wednesday, November 26, 2003 11:43 
 PM
> > >   >     >         >   Subject: RE: [amibroker] to TOMASZ: how  
to
> > loop
> > >   >     through a list
> > >   >     >         of tickers ?
> > >   >     >         >
> > >   >     >         >
> > >   >     >         >   A slight oversight in my previous code,
you
> > CAN
> > >   list
> > >   >     tickers by
> > >   >     >         name (no string array needed) in the left most
> > column
> > >   >     with   the
> > >   >     >         slightly different code below. Here is a
fragment
> > of
> > >   the
> > >   >     table.
> > >   >     >         Include file can be found in previous post.
> > >   >     >         >
> > >   >     >         >
> > >   >     >         >
> > >   >     >         >   // N100 Correlation table
> > >   >     >         > Buy=Sell=Short=Cover=0;
> > >   >     >         > StkNum = Status("StockNum");
> > >   >     >         > Filter = Status("LastBarInTest") AND StkNum
<
> > 50;
> > >   >     >         > AddTextColumn(Name(),"Ticker",1.0);
> > >   >     >         > n = StkNum;
> > >   >     >         > #include <NtoN100Ticker.afl>
> > >   >     >         > Ticker1 = Ticker;
> > >   >     >         > C1 = Foreign(Ticker1,"C");
> > >   >     >         > for(m=50;m<=99;m++)
> > >   >     >         >    {
> > >   >     >         >    n=m;
> > >   >     >         >    #include <NtoN100Ticker.afl>
> > >   >     >         >    Ticker2 = Ticker;
> > >   >     >         >    C2 =   Foreign(Ticker2,"C");
> > >   >     >         >    Corr = Correlation(C1, C2, 8 );
> > >   >     >         >    Color = IIf(Corr>0,8,4); //   Add colors
to
> > make
> > >   a
> > >   >     heat map
> > >   >     >         >    AddColumn(Corr,Ticker,1.3,1,Color);
> > >   >     >         >    }
> > >   >     >         >       -----Original Message-----
> > >   >     >         > From: dirk schreiber     [ma
> > ilto:tianatrading@xxxx]
> > >   >     >         > Sent: November 27, 2003 2:03     AM
> > >   >     >         > To: amibroker@xxxxxxxxxxxxxxx
> > >   >     >         > Subject: [amibroker] to     TOMASZ: how to
loop
> > >   through a
> > >   >     list of
> > >   >     >         tickers ?
> > >   >     >         >
> > >   >     >         >
> > >   >     >         >     i'm a bit surprised to see that    
noone is
> > >   >     answering my
> > >   >     > call.
> > >   >     >         >     so may i ask you directly,     tomasz,
if
> > what
> > >   i
> > >   >     asked is
> > >   >     >         possible and if you could indicate me the
right
> > >   way to
> > >   >     code
> > >   >     >         this ??
> > >   >     >         >
> > >   >     >         >     thank you,
> > >   >     >         >
> > >   >     >         >     dirk
> > >   >     >         >
> > >   >     >         >           ----- Original Message -----
> > >   >     >         >       From:       dirk       schreiber
> > >   >     >         >       To: amibroker@xxxxxxxxxxxxxxx
> > >   >     >         >       Sent: Monday, November 24, 2003 12:14
   
> >   PM
> > >   >     >         >       Subject: Re: [amibroker] how to loop
> > >   through
> > >   >     a list of
> > >   >     >         tickers ?
> > >   >     >         >
> > >   >     >         >
> > >   >     >         >       noone ???
> > >   >     >         >       i'll try again: as an       example,
is it
> > >   possible
> > >   >     to
> > >   >     >         calculate all correlations of the stocks
> > >   constituting
> > >   >     the
> > >   >     >         nasdaq100 in one scan?
> > >   >     >         >       my code below will explore       the
> > >   correlations
> > >   >     of IBM
> > >   >     > with
> > >   >     >         the other 99 constituents of my      
nasdaq100
> > >   watchlist.
> > >   >     is there
> > >   >     > a
> > >   >     >         way in afl to tell amibroker to first      
> > calculate
> > >   these
> > >   >     >         correlations for one stock, then go to the
next
> > and
> > >   do the
> > >   >     > same
> > >   >     >         there and so forth, so that i could find out
the
> > 10
> > >   highest
> > >   >     >         correlations within the nasdaq100 for example
??
> > >   >     >         >       i have tried many ideas but i       am
> > stuck
> > >   >     (haven't
> > >   >     >         mastered the new loop formulas very well yet)
> > >   ...
> > >   >     >         >
> > >   >     >         >       any help would be greatly      
> > appreciated,
> > >   maybe
> > >   >     this
> > >   >     >         procedure would interest other amibroker
users as
> > > 
> > >   >     well.
> > >   >     >         >
> > >   >     >         >       thanks in       advance,
> > >   >     >         >
> > >   >     >         >       dirk
> > >   >     >         >
> > >   >     >         >
> > >   >     >         > pair="IBM";
> > >   >     >         >
> > >   >     >         > x=Foreign(pair,"C");
> > >   >     >         >
> > >   >     >         > y=C;
> > >   >     >         >
> > >   >     >         > xpc=ROC(x,1);
> > >   >     >         >
> > >   >     >         > ypc=ROC(y,1);
> > >   >     >         >
> > >   >     >         > Graph0=Correlation(xpc,ypc,20);
> > >   >     >         >
> > >   >     >         > Graph1=Correlation(xpc,ypc,200);
> > >   >     >         >
> > >   >     >         > Filter=Graph0>0.7       AND Graph1>0.5;
> > >   >     >         >
> > >   >     >         > AddColumn(Graph0,"Cor20",1.2);
> > >   >     >         >
> > >   >     >         > AddColumn(Graph1,"Cor200",1.2);
> > >   >     >         >
> > >   >     >         > AddColumn(Graph0+Graph1,"total",1.2);
> > >   >     >         >
> > >   >     >         > Buy=0;
> > >   >     >         >
> > >   >     >         >
> > >   >     >         >
> > >   >     >         >
> > >   >     >         >
> > >   >     >         >               ----- Original Message -----
> > >   >     >         >         From:         dirk schreiber
> > >   >     >         >         To: amibroker@xxxxxxxxxxxxxxx
> > >   >     >         >         Sent: Thursday, November 20, 2003
> > >   6:56 PM
> > >   >     >         >         Subject: [amibroker] how to loop
> > >   through
> > >   >     a list of
> > >   >     >         tickers ?
> > >   >     >         >
> > >   >     >         >
> > >   >     >         >                 hello,
> > >   >     >         >
> > >   >     >         >         this is my first         post.
> > >   >     >         >         i have been working my way        
into
> > the
> > >   ideas
> > >   >     behind
> > >   >     >         pair trading, reading the interesting posts by
> > >   yuki
> > >   >     a few
> > >   >     >         months ago and writing some code.
> > >   >     >         >         here is where i'm stuck:        
when i
> > >   calculate
> > >   >     >         correlation, price ratio and other things like
> > beta
> > > 
> > >   >     ratio it
> > >   >     >         is my understanding that when scanning my
> > database i
> > >   can
> > >   >     only
> > >   >     >         compare one stock at a time with the rest of
my
> > >   universe. --
> > >   >     is
> > >   >     >         it         possible to calculate all
correlations
> > >   between
> > >   >     all stocks
> > >   >     >         in one scan??         i know that with big
groups
> > >   this
> > >   >     would mean
> > >   >     >         millions of         calculations, but for a
group
> > like
> > >   the
> > >   >     n100 this
> > >   >     >         should be possible?
> > >   >     >         >         can this be done by some        
sort of
> > >   loop?
> > >   >     >         >         i searched the mailing list        
> > archive
> > >   and
> > >   >     found only
> > >   >     >         one hint by DT, talking about maybe using
> > >   something
> > >   >     like
> > >   >     >         Status("STOCKNUM") == 0   , but i        
could
> > not
> > >   work
> > >   >     that out
> > >   >     > ...
> > >   >     >         >
> > >   >     >         >         any help is         appreciated,
> > >   >     >         >         thanks in         advance,
> > >   >     >         >
> > >   >     >         >         dirk
> > >   >
> > >   >
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