|
PureBytes Links
Trading Reference Links
|
Hi Tomasz,
I was not suggesting that you should change any previous terminology.
That would not be wise.
I have Howard's Intro to AB book, but not his first. I will admit
that I have not read it from cover to cover, as I got it to use as an
indexed reference. However, I have looked in the glossary and index
and in the plot commands and in the reserved variables, and I don't
see where he explains Z-order. The only mention is of Graphzorder as
a reserved variable without explanation. Of course the z-order
switched by this variable is a forward or reverse order that is
unchanged in definition.
Perhaps Howard can point out the page where he explains Z-order?
Or perhaps you are talking about his next book?
Best regards,
Dennis
On Feb 18, 2009, at 3:43 PM, Tomasz Janeczko wrote:
> I will stick with z-order in all docs. And layers will remain in
> original AB sense.
> That is mainly because I don't want to change things that are already
> described in Howard's books.
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "Dennis Brown" <see3d@xxxxxxxxxxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Wednesday, February 18, 2009 9:21 PM
> Subject: Re: [amibroker] Re: Plot() and z-order
>
>
>> 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@xxx> 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@xxx>
>>>>> 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
>>
>>
>> ------------------------------------
>>
>> **** 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
>
>
>
------------------------------------
**** 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:
mailto:amibroker-digest@xxxxxxxxxxxxxxx
mailto: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/
|