Area series, how to remove vertical lines
lazarus / 55-TAChart

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arneolav · 2017-03-16 20:02

Hi!
I'v implementet Area series, ok.
In some cases, many y-values results in a lot of unwanted stacked
lines (vertical lines),

In documation:
These y values are drawn in a stacked way if the property Stacked is
set to true (by default).

I'm not able to find in any documentation nor examples the syntax of
how to set stacked (vertical lines)  in Area series to false.
any?

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wp · 2017-03-16 21:06

You mention vertical bars being drawn for each data point. This has
nothing to do with this Stacked property. If you don't like these
lines (like me) then you should switch the PenStyle of the AxisLinePen
to psClear (this property is responsible for drawing of the vertical
lines).

The property Stacked is a new feature added recently, it is not
available in Lazarus 1.6.4. Stacked=true is the standard behavior of
the old versions and means that several y values are added on top of
each other. If Stacked = false then the y values are plotted without
this vertical offset,

BTW: Multiple y values used for stacking of area series should be
positive. If a value is negative it would be plotted below the
preceding y value. Due to the way how ChartStyles work (which you need
to colorize the individual stack levels) this will lead to incorrect
painting of the areas.

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arneolav · 2017-03-16 21:19

Thanks, exactly as I want it:
TAreaSeries(ASeries).AreaLinesPen.Style:=  psClear