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Ok, now I see the distinction that you were trying to make. z-plane
does have a nice ring to it ;)
Mike
--- In amibroker@xxxxxxxxxxxxxxx, Dennis Brown <see3d@xxx> wrote:
>
> Of course they resort to: "This is the same as making "layers" of
> objects where the Z-order determines what object is on top of
> another." in order to help the reader visualize it.
>
> Another word that was referenced was Planes. Also Depth Buffers,
and
> Z-buffers relate to 3D methods. Also it seams that "layers" as a
term
> is used for just about everything as a concept of hierarchy in
> software, so I am ready to back away from that. Z-order is more
> widely used in windows programming due to what MS called it.
>
> The Z-order of plots has always been there based on the order of
> execution of AFL (forward or reverse). Now we have this new idea of
Z-
> order that is based on discrete numbered planes or buffers that
also
> have their own independent Z-order based on the previous sentence.
>
> Ok, this will be my humble suggestion for the plot planes: Z-planes.
> I can visualize that. Each Z-plane can have the Z-order of plots as
> forward or reversed as before.
>
> I am done commenting on this subject now. I will use whatever is
> decided by Tomasz.
>
> Best regards,
> Dennis
>
> On Feb 18, 2009, at 2:28 PM, Mike wrote:
>
> > z-order is a pretty standard reference in coding languages, and is
> > used as an adjective.
> >
> > http://en.wikipedia.org/wiki/Z-order
> >
> > Mike
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, Dennis Brown <see3d@> wrote:
> >>
> >> Tomasz,
> >>
> >> Thank you for making it possible for customers like me who use
AFL
> > as
> >> a programming language to create trading "platforms". Every time
> > you
> >> add some big or little thing that provides additional AFL
> > flexibility
> >> to control internal functions, I am able to quickly expand my
> > horizons
> >> with how I use AmiBroker.
> >>
> >> Yes, I struggled when writing the previous post when I realized
that
> >> even though I had been thinking and referring to the Z-order as
> >> "layers" for a long time, that term had already been used in
> > AmiBroker
> >> for visibility layers.
> >>
> >> When trying to use only "Z-order", I struggled because, this
implies
> > a
> >> verb, and conceptually I wanted to convey the idea of a noun of
> >> positions. It can be visualized both ways -- as outputting plots
in
> >> groups with the group order defined by Z-order parameter, or as
> >> implemented where each Z-order refers to a different Z-layer with
> > its
> >> own buffer. I find it much easier to visualize it as different
Z-
> >> layers on the chart. I come from a background in CAD and
photoshop
> >> type programs where layers refers to Z-layers.
> >>
> >> I don't have all the answers, all I can do is provide some
feedback
> >> from my experience. I think Z-order is a good term to describe
the
> >> "action" parameter of the command, and Z-layers or perhaps Z-
levels
> > is
> >> the static "result" of executing the commands. Perhaps someone
else
> >> has a better idea about this.
> >>
> >> Best regards,
> >> Dennis
> >>
> >> On Feb 18, 2009, at 3:38 AM, Tomasz Janeczko wrote:
> >>
> >>> Dennis,
> >>>
> >>> Thank you for the feedback. All your findings are correct. It is
> >>> very encouraging seeing new feature being
> >>> fully utilised in such a short time.
> >>> Regarding naming conventions - yes I try to keep the "Z-order"
> > name
> >>> for new z-order feature
> >>> and do not use the word "layer" to avoid mix with old
> > functionality.
> >>> So, I would like to avoid names like z-layer.
> >>>
> >>> In fact the drawing studies (lines/rectangles/elipsses) can use
> > both
> >>> functionalities *independently*.
> >>> The z-order defines the drawing order (above/below), while the
> > layer
> >>> controls visibility (on/off) depending on interval displayed.
> >>> Having two as independent controls was intended and provided for
> >>> maximum flexibility.
> >>>
> >>> If anyone has better ideas on naming conventions, they can be
> > changed.
> >>>
> >>> For me "z-order" name represents actual functionality best. I
have
> >>> some doubts regarding "layer" word, because
> >>> this old functionality actually is just visibility switch.
> >>>
> >>> Best regards,
> >>> Tomasz Janeczko
> >>> amibroker.com
> >>> ----- Original Message -----
> >>> From: "Dennis Brown" <see3d@>
> >>> To: <amibroker@xxxxxxxxxxxxxxx>
> >>> Sent: Wednesday, February 18, 2009 3:01 AM
> >>> Subject: Re: [amibroker] Plot() and z-order
> >>>
> >>>
> >>>> Tomasz,
> >>>>
> >>>> Thanks for all the layers. I have already added them to my
> > charts
> >>>> (which removed a bunch of spaghetti code) and have generically
> > used
> >>>> up
> >>>> all 11 already!
> >>>>
> >>>> Having plot Z-layers makes my AFL much more modular and the
> > includes
> >>>> are more complete.
> >>>>
> >>>> I just want to confirm that Gfx drawings plot above Z-layer 5
and
> >>>> below Z-layer -5. This effectively adds one more Z-layers --
> > since
> >>>> you can't mix Gfx overlay modes in the same chart.
> >>>>
> >>>> It appears that shapes plot to Z-layer 0 of the specified layer
> > (like
> >>>> intraday layer). Plotting text seems to got to Z-layer 0, as
> > well as
> >>>> drawing text studies. Calling two different things "Layers"
may
> >>>> cause
> >>>> confusion, so we all should stick with Z-order or Z-layer to
make
> > it
> >>>> clear.
> >>>>
> >>>> For those who might wonder what to use all the Z-layers can be
> > used
> >>>> for, here is an example of how I apportioned them on my charts
> > for
> >>>> now
> >>>> --all are used (and I could even use a few more):
> >>>>
> >>>> -6 Gfx mode 1 (I do not use)
> >>>> -5 Bg fill area 1 (used for multiple overlapping bands layer
> > settable
> >>>> in each indicator)
> >>>> -4 Bg fill area 2
> >>>> -3 Bg fill area 3
> >>>> -2 Bg fill area 4
> >>>> -1 Ovals/Rectangles manual chart highlighting (default setting)
> >>>> 0 Study lines (default setting), PlotText(), PlotShapes()
> >>>> +1 Upper chart Volume bars, Middle chart Volume bars, Trade
> > equity
> >>>> histograms & lines
> >>>> +2 Under price bar shadow areas
> >>>> +3 Price bars/lines, -- stops & limits (plot under)
> >>>> +4 Signal Ribbon displays at bottom of chart
> >>>> +5 Lower overlapped Volume bars and Volume indicators, Volume
and
> >>>> signal Ribbon grid lines
> >>>> +6 Gfx mode 0 (8 pseudo "Z-layers" of Gfx button arrays)
> >>>>
> >>>> The beauty of Z-layers is that the calculation order is
decoupled
> >>>> from
> >>>> the plot order.
> >>>>
> >>>> The Gfx drawings do not have Z-order. It would be nice to have
> > them,
> >>>> but since my Gfx buttons can all be drawn at the end of the
AFL,
> > it
> >>>> is
> >>>> inconvenient, but not too difficult to arrange for the fact
that
> > the
> >>>> detection order and the drawing order are reversed. It just
> > means
> >>>> that it is not completely modular with includes, and a bit
error
> >>>> prone
> >>>> from manual editing. I can live with it though.
> >>>>
> >>>> This is a major milestone for my charts.
> >>>>
> >>>> Best regards,
> >>>> Dennis
> >>>>
> >>>> On Feb 15, 2009, at 4:12 AM, Tomasz Janeczko wrote:
> >>>>
> >>>>> Hello,
> >>>>>
> >>>>> With regard to 5.21.0 BETA new functionality
> >>>>> "Plot, PlotForeign and PlotOHLC now have new parameter zorder
> > which
> >>>>> defines the Z-axis position of given plot. (FC#257)"
> >>>>>
> >>>>> It works correctly for PlotOHLC and PlotForeign.
> >>>>> For Plot() function, the XShift parameter is incorrectly used
as
> > z-
> >>>>> order.
> >>>>> This will be fixed in 5.22.
> >>>>>
> >>>>> So if you need z-ordering for Plot(), please use PlotOHLC
> > instead
> >>>>> until 5.22 comes up.
> >>>>>
> >>>>> Thanks to Dennis for reporting this.
> >>>>>
> >>>>> Best regards,
> >>>>> Tomasz Janeczko
> >>>>> amibroker.com
>
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