I'm probably not understanding but I'll take a shot . . . assuming the bubble
chart is similar to an XY Scatter chart, wouldn't you set your data up like
this:

x y size
2 5 0.25
4 6 0.46
6 8 0.68
9 6 0.96

The coordinates as you've presented them looked like they might be swapped.
Can you post back with an example similar to that above of how your data is
set up?

----
Regards,
John Mansfield
http://www.pdbook.com

"laszlo" wrote:

I would like to place bubbles on the 2D places (x,y) with different radius.
The coordinates are the (column, row) an´d the rtadius the value in the cell
(column, row). For example the value 0.25 in the cell (2,5) means, that a
bubble with radius 0.25 placed on the 2D coordinate system at the location
x=2, y=5.

How to do it ? The bubble chart places the bubbles on the location (column,
radius).

Thanks in advance, Laszlo