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Hi Ken,
The problem is that you defined H1 as a regular variable and the code
is looking for a static variable named H1. Therefore, the static
variables are empty. For your test here, just use VarGetText(...
Or make your variables into static variables:
StaticVarSetText("H1", "SPY,500,06/04/2008");
etc.
BR,
Dennis
On Sep 19, 2008, at 4:51 PM, Ken Close wrote:
> Dennis:
>
> I feel I have a lot to learn from dynamic variables here (asked once
> before), but right now I can not make this concept work.
> Code below is my modifcation of your concept and it does not crash
> but only prints the commas between the strings.
> List becomes H1 on the first pass through the loop, then, SymList is
> SymList (empty on first pass) + the first (0) item in H1, or the
> first symbol. At a minimum, the Symlist will eventually be
> ",SPY,etc) as there is no logic to skip the first comma---unless I
> am reading it wrong. Same issue on each of the other ShrList and
> DatList.
> So, not sure what I am missing, nor have I been successful in adding
> anything to correct the problem.
> Any suggestions?
> Many thanks for responding.
> Ken
> ==============================
> My code using your concept"
> H1 = "SPY,500,06/04/2008";
> H2 = "DIA,100,09/02/2008";
> H3 = "QQQQ,300,08/04/2008";
> H4 = "BEARX,1204,05/21/2007";
> TotalSymbolCount = 4;
> SymList = "";
> ShrList = "";
> DatList = "";
> for( i=1; i < totalSymbolCount; i++ )
> {
> list = StaticVarGetText( "H" + NumToStr(i, 1.0, 0));
> SymList = SymList + "," + StrExtract( list , 0);
> ShrList = ShrList + "," + StrExtract( list, 1);
> DatList = DatList + "," + StrExtract( list, 2);
> }
> Title = Symlist + "\n" +
> ShrList + "\n" +
> DatList;
>
>
> ===============================
>
> From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx]
> On Behalf Of Dennis Brown
> Sent: Friday, September 19, 2008 1:47 PM
> To: amibroker@xxxxxxxxxxxxxxx
> Subject: Re: [amibroker] String Manipulations
>
> Ken,
>
> This is quite easy by using the StrExtract( list, item) function. I
> am doing some similar things in the AFL I am writing for the AFL
> Glossary project.
>
> Typing this off the top of my head to give you the basic idea:
>
> For( i=1; i < totalSymbolCount; i++ )
> {
> list = VarGetText( "H" + NumToStr(i, 1.0, 0);
> SymList = SymList + "," + StrExtract( list , 0);
> ShrList = ShrList + "," + StrExtract( list, 1);
> DatList = DatList + "," + StrExtract( list, 2);
> }
>
> BR,
> Dennis
>
> On Sep 19, 2008, at 12:53 PM, Ken Close wrote:
>
>> I have tried various constructions to achieve the following, but
>> the code gets complex and has no good way of detecting end of string.
>>
>> I would like to take a series of strings, H1, H2, H3, and create
>> lists of the elements, as such
>>
>> H1 = "SPY,500,06/04/2008";
>> H2 = "DIA,100,09/02/2008";
>> H3 = "QQQQ,300,08/04/2008";
>>
>> and turn them into these three lists
>>
>> SymList = "SPY,DIA,"QQQQ";
>> ShrList = "500,100,300";
>> DatList = "06/04/2008,09/02/2008,08/04/2008";
>>
>> Hx strings would be hard coded into the overall afl although one
>> could set up a variety of paramtxt statements to enter them.
>>
>> Seems like it would be somewhat easy (and maybe it is), but I get
>> bogged down in switch/case statements, or complex if/else statements.
>>
>> Anyone see a more simple way to arrange the strings.
>>
>> My ultimate goal is to have a list of "holdings" and some simple
>> statistics displayed.
>> AA window with a Watchlist seems obvious--yes?--but I need to have
>> multiple positions of the same symbol, and I do not think you can
>> put multiples of the same symbol in a watchlist--same symbol with
>> different shares purchased on different dates-- (is there a way?).
>>
>> I next tried dynamic variables, in order to manipulate symbols and
>> their associated price statistics, but that bombed.
>>
>> So now I am attempting to display my list of holdings in a Gfx
>> title statement.
>> I successfully have it displayed, but using long strings, like
>> above for the SymList, ShrList, and DatList. This gets
>> unmanageable when the number of symbols gets large and you try, by
>> eye, to coordinate the dates and shares.
>>
>> Thus, I was hoping to list a three element string reprenting each
>> holding and then rearrage them into long string lists.
>>
>> any ideas?
>>
>> thanks.
>>
>>
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