--- In amibroker@yahoogroups.com, "Tomasz Janeczko" <gro...@...> wrote:
>
> All this is possible using these 3 building blocks:
>
> 1.
> Reading X/Y pos and mouse clicks:
> http://www.amibroker.com/guide/afl/afl_view.php?id=295
> http://www.amibroker.com/guide/afl/afl_view.php?id=296
> http://www.amibroker.com/guide/afl/afl_view.php?id=297
>
> 2.
> Converting from var-value to pixel
> http://www.amibroker.com/kb/2009/03/30/how-to-convert-from-bar-value-to-pixel-co-ordinates/
>
> 3.
> Drawing:
> http://www.amibroker.com/guide/h_lowlevelgfx.html
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "af_1000000" <af_1000...@...>
> To: <amibroker@yahoogroups.com>
> Sent: Monday, May 18, 2009 10:19 PM
> Subject: [amibroker] AFL Studies
>
>
> >I have tried to re-create some studies created before in other software
> >packages with ease, but it seems that I hit the wall in AB.
> >
> > Let's start with a very simple, but very powerful.
> > 1. Identify 3 swing pivot points A,B,C. B is between A and C.
> > 2. Connect A and C and plot a parallel line through B.
> > 3. Plot parallel lines to AC in 1.27, 1.68, 2.68, .... distance between AC
> > and parallel line trough B. Lines will be below or
> > above B depending on whether B is above or below AC.
> > 4. Connect B and C.
> > 5. Plot parallel lines to the right of A in 0.32, 0.5, 0.68, 0.72, 1, 1.28,
> > 1.68, ... distance between A and C.
> >
> > 6. Watch the market and see what is going to happen. As a matter of fact
> > you can created such a study in the past and verify
> > results.
> >
> > To accomplish the task three mouse clicks (on A,B,C) and the ability to
> > draw lines are needed. To draw lines is easy in AFL, but
> > to collect A,B,C co-ordinates seems to be impossible. I do not want to use
> > GFX functionality, because the study should still work
> > even though A,B,C are no longer visible on the chart and I do not want to
> > display more bars on the chart to make them visible.
> >
> > How to do it in AB ? Any constructive help will be appreciated.
> >
> > And by the way. If collection of mouse clicks can be stored and re-created
> > at any time your imagination is the only limit what you
> > can do with the studies (e.g. crating manual Elliot waves and drawing waves
> > projections,drawing geometric shapes,................,
> > etc).
> >
> > AF
> >
> >
> >
> >
> > ------------------------------------
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>
Thanks for a prompt replay. Sorry TJ, but your response is a semi-constructive
one. I mentioned in my original posting that I do NOT want to use GFX
functionality for several reasons:
1. It would be nice to save AFL study the same way as any other studies for
future references (if I shut down AB and open it again tomorrow or the day
after tomorrow the study still should be available - the anchor points never
change unless they are adjusted by the user).
2. If points anchors: A,B,C (mentioned in the original example) are off the
chart tomorrow (e.g. intra chart) , but still within loaded bars I should be
able to see the result of the study. For that reason I would use LineArray()to
plot any lines or other polygon type shapes.
It seems that the project is doable. To accomplish the task the script would
have to:
1. Collect three mouse clicks (waiting every time for a chart refresh - quite a
difference from collecting values for other parameters).
2. Store click coordinates in the external file (ASCII) for future references
using some kind of naming convention, so the file could be found later on.
3. Every time a symbol is selected the script would have to check if there are
any studies (external files) available with the number of coordinates required
(equal to number of clicks handled by this particular script). If studies are
not available should it wait to gather them ??? (even if studies for that
symbol are not needed). Well, the problem with templates, Chart_Ids is another
story better left for future considerations.
It should be obvious that the method described above is quite primitive and
rather rude. I hope that I am wrong and something better exists.
Logically, AFL study should not differ from any other PARAM function. PARAM
functions accept values from users (either entry or selection from the list)
and remember them for any current or future executions).
What is the difference between Length = Param("Len",5) which stores the length
equal to 5 and e.g. Clicks = ParamClick(3)? (which could gather three mouse
clicks and store cliks coordinates). To get individual coordinates: e.g.
Click_1_X = GetX(Clicks[1]),Click_1_Y = GetY(Clicks[1]), ... and so on. It is
up to the script to interpret parameter values as long as they are available.
I realize that such functionality does not exist in AB, but maybe there is
something better than I described earlier ?
AF
