George,

It seems rather unconventional to try and merge data which has different energy grid spacing?  I thought the main point of merging data is to reduce the noise and uncertainty of a measurement.  I am not sure how the exact method of merging data is implemented but I don't think it is fair to call this a bug as a result of a unique situation.  Could you or have you reinterpolate one spectrum?

Chris Patridge 
********************************
Christopher J. Patridge, PhD
NRC Post Doctoral Research Associate
Naval Research Laboratory
Washington, DC 20375
Cell: 315-529-0501
On 2/26/2013 6:55 PM, George Sterbinsky wrote:
I am writing to make you aware of what I believe to be a bug in (D)Athena.  To demonstrate the problem, I have attached a project file containing two groups. Both groups have the same energy range but were measured with slightly different point spacings. Attempting to merge the two groups results in Athena excluding one of the groups from the merge "for being too short."

Thank you,
George


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