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IntegrateEPP v1¶

Summary ¶

Integrate a workspace around elastic peak positions.

Properties ¶

Name	Direction	Type	Default	Description
InputWorkspace	Input	MatrixWorkspace	Mandatory	A workspace to be integrated.
OutputWorkspace	Output	MatrixWorkspace	Mandatory	An workspace containing the integrated histograms.
EPPWorkspace	Input	TableWorkspace	Mandatory	Table containing information on the elastic peaks.
HalfWidthInSigmas	Input	number	5	Half of the integration width in multiplies of ‘Sigma’.

This algorithm integrates a workspace around the peak positions given in an elastic peak position (EPP) table. The integration is done using the Integration v1 algorithm. EPPWorkspace should be a table workspace in the format returned by FindEPP v2. The integration limits for workspace index \(i\) in InputWorkspace are given by

\(d_i = c_i \pm w \sigma_i\),

where \(-\) is for the lower and \(+\) for the upper limit, \(c_i\) the value from the ‘PeakCentre’ column, \(w\) the HalfWidthInSigmas property and \(\sigma_i\) the value from the ‘Sigma’ column.

If a workspace index is missing from EPPWorkspace, the integration limits will be set to zero.

Usage ¶

Example - IntegrateEPP

gaussian = 'name=Gaussian, PeakCentre=7000, Height=230, Sigma=680'
ws = CreateSampleWorkspace('Histogram', 'User Defined', gaussian)

epps = FindEPP(ws)

integrated = IntegrateEPP(ws, epps, 3)

xs = integrated.readX(0)
ys = integrated.readY(0)
print('Integral from {:.6} to {:.6} yields {:.5}'.format(xs[0], xs[1], ys[0]))