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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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