Positioning KDChart::CartesianAxis, KDChart::AbstractDiagram

Hi All,
I am a newbie on KDChart 2.0.
I would like to control the (relative) position of KDChart::CartesianAxis objects and KDChart::AbstractDiagram objects in relation to the KDChart::Chart. So far, only KDChart::Legend has implemented

Code:

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setFloatingPosition()

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which I would like to use for CartesianAxis and AbstractDiagram.
Currently, I align axis by modifying KDChart::Chart's globalLeading variables, e.g.
if I want to put the left beginning of a graph right at position X, I would do

Code:

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KDChart::Chart::setGlobalLeadingLeft( X - xAxis->geometry().width()).

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Do any one know other ways to manage the positions of these objects? Thanks a lot.