Lee -

Sometimes you need to insist that Excel provide the secondary X axis.
When you assign a series to the secondary axis, Excel usually just
provides the secondary Y axis. You can go to Chart Options on the Chart
menu, and on the Axes tab, specify which primary and secondary axes you
want.

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


Lee Harris wrote:

"Lee Harris" wrote:


Ive added secondary y axes before, so you can have a series relating to
the
left hand axis and one on the right, but with a common x axis

but is there an easy way to have two x axis, one at the top and one at
the
bottom. i don't actually need a 2nd series, but I want my charts to have
one
unit across the bottom (dose) and another along the top (exposure index)
just for reference, so that visually I can look at the curve and read off
either dose (at the bottom of the chart), or exposure (at the top)

thanks in advance





"bj" wrote in message
...

A simple way to do it is to plot your data twice. change the axis on one
and
set line and sybol to none for one.
in input the two x lable sets



can you do that with x axes though? I've done it before with y axis but not
x axis