GetEi2 falls over for if the peak has small local maxima on the sides

[martyngigg]

If a monitor peak is sufficiently "jagged", i.e local maxima occur on the peak sides (see attached image), then this throws the GetEi algorithm off as it can't determine the peak width properly.

The attached file contains such a peak. The see the problem

• Load the file
• Run GetEi with monitor spectra 1 & 2 respectively and a guess of 40 MeV
• The algorithm should fall over with a nan value for the Params of Rebin

[martyngigg]

This issue was originally trac ticket 3081

[martyngigg]

http://trac.mantidproject.org/mantid/raw-attachment/ticket/3081/GetEi-Problem- Peak.png
(uploaded by @martyngigg on 2011-05-25T08:09:32)

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http://trac.mantidproject.org/mantid/raw-attachment/ticket/3081/mon_bad.nxs
(uploaded by @martyngigg on 2011-05-25T08:09:44)

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