Are you offsetting all points of a series by the same amount? Then just add
or subtract the amount from each data value in the worksheet.

- 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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wrote in message
...
Dear All

I am looking to subtract a baseline from graphs, but I have not found
a method of subtracting curves in Excel. More specifically, I am
looking to compensate for machine slack during compression testing,
thus the baseline will be consistent from data set to data set. A
colleague has designed a fairly complicated multi sheet workbook that
interpolates the data ranges before graphing, but it has it's errors
and is still not perfect. The best solution I have found so far is a
program called FindGraph, but I am hoping to find a solution within
Excel (ie: free!). Can anybody help?

Many thanks in advance

Andy