|
PureBytes Links
Trading Reference Links
|
Ed -
I got interested in this thread and your posted AFL over coffee this morning. Looked like an interesting puzzle. Please take the following constructively. You can pass the table from the procedure, but the bottom line is that you really do not need OSAKA. Standard arrays (not static) via VarGet() and VarSet() could be used. Another significant opportunity is to eliminate the looping - it is going to run very slow with the nested bar loops.
Anyway, if you want to see it, let me know. If you've moved on with what you have, that's fine, too.
-- BruceR
--- In amibroker@xxxxxxxxxxxxxxx, "Edward Pottasch" <empottasch@xxx> wrote:
>
> hi Ton,
>
> I couldn't pass it through the procedure. If defined within the procedure you need to save it to a file to use it elsewhere in the code (as far as I know). If you do not need procedures it just sits in the memory.
>
> But the fact that this example code is so slow is due to the loop within a loop. For the problem I am trying to solve there is no way around that. So if Amibroker adds multidimensional arrays I guess it will not be faster but it will be a lot easier,
>
> regards, Ed
>
>
> ----- Original Message -----
> From: Ton Sieverding
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Tuesday, December 29, 2009 4:59 PM
> Subject: Re: [amibroker] Re: ABTool / multidimensional arrays
>
>
>
>
> Ed, thanks for the code. I've tried it. A very nice quick intro for OSAKA. Just a simple question. Is there a way in OSAKA to write the table to internal in stead of external memory ? Should be a hell of a lot faster ...
>
> Regards, Ton.
>
>
> ----- Original Message -----
> From: Edward Pottasch
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Tuesday, December 29, 2009 1:11 PM
> Subject: Re: [amibroker] Re: ABTool / multidimensional arrays
>
>
>
>
> hi Ton,
>
> thanks for your suggestion, I will remember it for future use. For now I seem to be able to get ahead with the Osaka plugin. It would be nice if we could define multidimensional arrays in Amibroker. I thought there have been requests for this but I can't find any in the suggestions section.
>
> In my example code it can be seen that you can use a "Osaka" table inside a procedure but you can not pass it to the main program as a global variable multidimensional array. Therefor it needs to be saved in a file and later restored.
>
> regards, Ed
>
>
>
> ----- Original Message -----
> From: Ton Sieverding
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Tuesday, December 29, 2009 1:02 PM
> Subject: Re: [amibroker] Re: ABTool / multidimensional arrays
>
>
>
>
> Hi Ed. I know you will not like what I am suggesting but it works. At least for me. Before using Static Arrays load a very long time series like the SP500 and use this as a 'carrier' or 'feeder' for your Static Array ... I assume you understand what I mean. I am using this trick for all cases where I need long arrays ...
>
> Regards, Ton.
>
>
> ----- Original Message -----
> From: Edward Pottasch
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Tuesday, December 29, 2009 11:31 AM
> Subject: Re: [amibroker] Re: ABTool / multidimensional arrays [1 Attachment]
>
>
>
>
> hi,
>
> I wanted to use multi dimensional arrays so that I can use a number of levels as a variable. It is impossible in Amibroker to define a variable number of arrays, or I do not know how. For instance I tried as a variable: nlev = 4;
>
> for (k = 0; k <= nlev * 2; k++)
> {
> nn = (k - nlev);
> global "lev" + nn;
> "lev + nn = Null;
> }
>
> this does not work. So it seems you can not define a variable number of "normal" arrays.
>
> Therefor I moved to static arrays. That seemed to work at first but I encountered problems I did not understand and now I find this in the manual: "static array variables store only as many bars as there are currently in use by given chart." Even though I use setbarsrequired(-2,-2) or setbarsrequired(sbrall) the values inside the static arrays seem to vary. It depends where you drop your cursor, what part of the chart you display how they get filled. I thought there was something wrong in my code, drives you nuts but the values in these static arrays seem all over the place, pretty much useless for my purposes. Attached code what I was trying to do. Also I get different results when using setbarsrequired(-2,-2) and setbarsrequired(sbrall).
>
> Now I turned to the Osaka plugin but I find that you can fill and restore only 1 element at a time. You can not get an entire row at once. Am I right?
>
> thanks, Ed
>
>
>
> ----- Original Message -----
> From: Herman
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Monday, December 28, 2009 9:12 PM
> Subject: Re: [amibroker] Re: ABTool / multidimensional arrays
>
>
>
> The changes made by Tomasz to the OSAKA plugin are documented in the readme.
>
> herman
>
>
>
> Edward Pottasch wrote:
>
> ok thanks. I only find it in the 3-rd party area. Seems to be unchanged. Didn't know Tomasz improved it. Looks the same from when I tried it a few years ago. It has very little documentation. Will try again some day.
>
> to reefbreak: will have a look. For now I am able to solve my problem using static arrays. I am writing a complicated scaling in and out system, at least complicated to code where at the entry signal I define levels for scaling in and out. It looks like I can do without these multi dimensional arrays and static arrays do the job.
>
> rgds, Ed
>
>
>
> ----- Original Message -----
> From: Herman
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Monday, December 28, 2009 5:03 PM
> Subject: Re: [amibroker] Re: ABTool / multidimensional arrays
>
>
>
> btw, if you haven't tried the OSAKA plugin yet you should give it a try. Tomasz improved it some time in the past and it gives, if you use it is intended to be used, high performance multi-column sorting. It is fast and has full capability to save/read/import tables to/from files - also very fast. It offers an unlimited number of columns, this may enable you to simulate multi dimensional tables in a two dimensional field.
>
> I think there are some ready to run examples in file section.
>
> If you haven't used this plugin you are missing out on some great functions! I encourage you to try it.
>
> herman
>
>
>
> reefbreak_sd wrote:
>
> You didn't state your application, so I don't know if it is relevant, but I posted a 2 dimensional sort routine in message 136551. This routine reverse sorts tickers and an indicator value, and keeps the pairs together to be printed in the Interpretation window.
>
> ReefBreak
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Edward Pottasch" <empottasch@> wrote:
> ok thanks Herman.
>
> regards, Ed
>
>
>
>
>
> ----- Original Message -----
> From: Herman
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Monday, December 28, 2009 11:21 AM
> Subject: Re: [amibroker] ABTool / multidimensional arrays
>
>
>
> The last I heard was that the developer stopped supporting it and that Tomasz wrote at some point that ABTools wasn't compatible with AB. It would be risky to use it.
>
> herman
>
> Edward Pottasch wrote:
>
> hi,
>
> I was looking into multidimensional arrays again. I know there is the Osaka plugin but never quite figured out how to use it. However, I found this post:
>
> http://finance.groups.yahoo.com/group/amibroker/message/40135
>
> all the way from 2003. This ABTool seems just what I need and easy to understand. However it seems to have been removed. Anyone know the history on this? Why it has been removed? What is currently the status with multidimensional arrays in Amibroker?
>
> thanks, Ed
>
>
>
>
>
> ------------------------------------
>
> **** IMPORTANT PLEASE READ ****
> This group is for the discussion between users only.
> This is *NOT* technical support channel.
>
> TO GET TECHNICAL SUPPORT send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
> http://www.amibroker.com/feedback/
> (submissions sent via other channels won't be considered)
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> Yahoo! Groups Links
>
------------------------------------
**** IMPORTANT PLEASE READ ****
This group is for the discussion between users only.
This is *NOT* technical support channel.
TO GET TECHNICAL SUPPORT send an e-mail directly to
SUPPORT {at} amibroker.com
TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
http://www.amibroker.com/feedback/
(submissions sent via other channels won't be considered)
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/amibroker/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/amibroker/join
(Yahoo! ID required)
<*> To change settings via email:
amibroker-digest@xxxxxxxxxxxxxxx
amibroker-fullfeatured@xxxxxxxxxxxxxxx
<*> To unsubscribe from this group, send an email to:
amibroker-unsubscribe@xxxxxxxxxxxxxxx
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|