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Re: [amibroker] GFX and Plotting in Layers in AB



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Joe,

I have added suggestions #1401, #1402 based on your feedback.

Best regards,
Dennis

On Mar 21, 2008, at 1:55 PM, Dennis Brown wrote:
>> 1.  Plot with GFX functions to a layer above all other layers
>> (Foreground) and a layer below all other layers and the chart layer
>> (Background).
>> 2.  GFX plots to each layer should remember their plots between AFL
>> passes and only clear a layer when plotting first time again in a new
>> AFL pass.
>> 3.  GFX plots should not cause the chart plots to clear.
>>
>> Why would I like these?
>> First, I currently generate some informational cell and button plots
>> with GFX functions.  I can plot them above the chart, but not above
>> the other layers that have my tend lines, etc.  This creates problems
>> reading the text in the cell or button, and potential problems
>> selecting line elements running over the buttons.  Even if future
>> versions of AB allow more control over the chart area so there is  
>> more
>> room for these informational displays, the regular layers still
>> currently cover more than the chart plot area.  Herman has shown us
>> how to create essentially pull down buttons running along the top of
>> the chart.  These buttons need to be plotted above everything else  
>> for
>> a clean interface.
>>
>> Second, I can speed up my AFL processing (and I do a lot of
>> processing), if I am able to only recalculate (and re-plot) on a new
>> bar (re-plotting the last bar only in a GFX layer).  However, I still
>> want to plot and interact with the GFX layer buttons in the mean  
>> time.
>>
>> Plotting order for normal chart plots:
>>
>> Something that is on the AB to do list is having more direct control
>> over the plot order in charts.  The difficulties of this have been
>> discussed before on this list.  One possible strategy is to extend
>> this idea of the GFX plot layers to a more general case.  For  
>> instance
>> if there were 8 or 16 layers that could be specified for the target  
>> of
>> a plot.  Within a layer, the plots would operate the same as  
>> currently
>> is the case.  However, selecting a different layer would result in  
>> the
>> ability to plot above or below a previous plot command without regard
>> to its placement in the AFL formula.
>


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