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Thanks for the information and reference to the manual. I guess I
skipped that section because it starts with not having to code and I'm a
programmer and not a drag-and-dropper.
Ron
--- In amibroker@xxxxxxxxxxxxxxx, Tomasz Janeczko <groups@xxx> wrote:
>
> Hello,
>
> For what is worth, nothing is to be discovered, everything is clearly
> described in the manual:
> http://www.amibroker.com/guide/h_dragdrop.html
>
> This of course includes exact description of purpose of Drag Drop
> folder, the difference between
> Insert and Insert Linked and all other "discoveries".
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
>
>
> On 2010-02-07 16:08, progster01 wrote:
> > Ron,
> >
> > I will comment on what you've discovered.
> >
> > I excerpt my comments from my CFT Forum post here:
> >
> > http://www.codefortraders.com/phpBB3/viewtopic.php?f=38&t=620
> >
> > and edit them slightly for presentation on Yahoo.
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "Ron"rondwaa@ wrote:
> >
> >> I've played around a little more. It seems the afl I write exists
in two places - AmiBroker\Formulas\Custom and AmiBroker\Drag-drop
directories.
> >>
> > Every new AB user eventually discovers this (or similar with one of
the other AB source code directories).
> >
> > This dual-location-situation is exactly the case in general, unless
you've deliberately avoided it by careful use of 'Insert Linked'.
> >
> > So, a chart pane will reference the code in one of those two places
or the other. The AA window also will reference the code in one of those
two places or the other. However, the user has to explicitly choose code
from the Drag-drop directory to get it into the AA window, whereas for
charts the user has to explicitly not choose code from the Drag-drop
directory (by using Insert Linked instead of dragging or double-clicking
to choose code).
> >
> > IOW, charts and AA windows reference external code files, as they
exist at runtime (assuming they still do). They do not carry their own
copy of the code as it existed at construction time.
> >
> > Drag-drop, if I may put it this way, is not something that happens
"in the chart" (except visually). Instead, it is something that happens
in the code files, and any file it happens in is different forever-after
(just look in the editor and see after dragging one indicator onto
another).
> >
> > The Drag-drop directory exists with a purpose that this form of
"outside the editor" editing not affect the original files involved.
(Instead, the file copies in the Drag-drop directory are affected.)
> >
> > However, a consequence is that the naive user will wind up creating
many charts all of which are based on files copied to the Drag-drop
directory, which will fill up with a dizzying array of .1, .2, .3, etc.
files.
> >
> > Then, at some point, the user will want to make a change to the
original file (i.e. in the Custom directory, or one of the other source
directories) and be expecting that this change will show up in all his
previously constructed charts. It will not.
> >
> > Can you see why not?
> >
> > The reason is that none of those previously constructed charts are
referencing the original file location any more!
> >
> > These facts also have profound implications for keeping charts and
code synchronized between machines.
> >
> > Personally, my goal is to completely avoid having any files in the
Drag-drop directory except on the most temporary basis, which is when
and only when I'm using the "drag-drop editing functionality" to perform
the specific sort of code edits that it does. After performing such
edits, upon confirming the desired visual result produced by the new
code, I immediately rename this code, copy it back into a permanent home
my source code tree, and delete it from the Drag-drop directory.
> >
> > IOW, to my way of thinking (arrived at after long experimentation
and usage), any file present in the Drag-drop directory is a sign of
chart and library organization pathology that needs to be corrected
ASAP.
> >
> > Of course, those are my charts, that's my library and my desired
organization. YMMV.
> >
> > Cheers!
> >
> >
> >
> >
> >
> >
> >
> > ------------------------------------
> >
> > **** 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
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> >
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> >
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> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
>
------------------------------------
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