FindSXPeaks crashing mantid if NaN present

[RichardWaiteSTFC]

Original reporter: Michael Ritchie (SXD student)

Describe the bug FindSXPeaks crashing mantid if NaN present

To Reproduce (1) Run this code

ws = CreateSampleWorkspace("Histogram", "Flat background", NumBanks=1, BankPixelWidth=1)
y = ws.dataY(0)
y[10:20] = np.nan
FindSXPeaks(InputWorkspace='ws', PeakFindingStrategy='AllPeaks', AbsoluteBackground=10, 
    ResolutionStrategy='AbsoluteResolution', XResolution=400, PhiResolution=3, TwoThetaResolution=3, OutputWorkspace='peaks')

It will crash mantid

Expected behavior No crash - NaN values would be ignored

Screenshots

Platform/Version (please complete the following information):

• OS: [e.g. Windows, RHEL 7, Ubuntu, macOS]
• OS Version:
• Mantid Version [e.g. 6.0.0]

Additional context

[mantid-builder]

Fixed by #34466