Try to stagger your data before you build the chart, so where the first
two series are stacked, there's no value of the third series, and where
there is a third series column, the first two have no values:

Series 1 Series 2 Series 3
value value
value
value value
value
value value
value

Make sure your series are plotted by column.

- Jon
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Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
_______

ldsun wrote:

I want to stack two series of data in one column and show a third series on
the column next to it on a 3-D chart. How do I unstack the third series of
data?