This tells how to synch axes so their zeros line up:

http://peltiertech.com/Excel/Charts/AlignXon2Ys.html

- Jon
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Jon Peltier, Microsoft Excel MVP
Tutorials and Custom Solutions
Peltier Technical Services, Inc. - http://PeltierTech.com
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"Neil" wrote in message
...
Hi All,

I'd appreciate some assistance with the following:

I have a chart that can display Sales $, Quantity, Margin % or Average
Unit Sell Price on the Primary axis (User selectable).

I have put together a rather ugly Worksheet Change Procedure that checks
whats on display and adjusts the primary axis display accordingly.

For example if the data displayed is "Margin %", the worksheet change code
will set 0 as min, 1 as max and display as "%".

I have also copied and adjusted to do this for the secondary axis which is
also user selectable from the above measures.....

That's working good so far.

Here's my problem.

When I plot sales $ data on the primary axis and margin $ data on the
secondary axis, I would like them to match in terms of the min, max values
so that I can see proportionally how the margin $ compares to the sales $.

At the moment I adjust the axis manually - this is not good during
presentations however !

Additionally, the higher valued item may be on the primary or secondary
axis, so I can't simply tell it to match the primary axis setup for the
secondary axis as this may chop the top off some of my data if it is the
secondary axis data that contains the highest value for the chart.

To manage the process, I have created a range that looks at the
combination on display and returns a value to flag whether the axes need
to be matched, ie. if sales $ and margin $ are displayed it flags "yes",
if sales $ and margin % are on display, it flags "no".

The groups collective wisdom is greatly appreciated.

Thanks,

Neil