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ChangeQConvention v1

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Summary

Change the convention of MD workspace.

Properties

Name	Direction	Type	Default	Description
InputWorkspace	InOut	IMDWorkspace	Mandatory	An input MDEventWorkspace or MDHistoWorkspace.

Description

This algorithm changes the sign of Q and the label of the workspace convention. This should only be used on MD workspaces that contain only Q or HKL dimensions. If there are other dimensions, user should still run this algorithm (so that the convention flag is changed), but then run TransformMD with -1 for the non-Q dimensions.

Usage

Example - an example of running ChangeQConvention with PointGroup option.

mdws = LoadMD('MAPS_MDEW.nxs')
dim = mdws.getXDimension()
print("X range of Q  {} {}".format(dim.getX(0), dim.getX(1)))
ChangeQConvention(mdws)
mdws = mtd['mdws']
dim = mdws.getXDimension()
print("X range of Q after ChangeQConvention  {} {}".format(dim.getX(0), dim.getX(1)))

Output:

X range of Q  0.0 10.0
X range of Q after ChangeQConvention  -10.0 0.0

Categories: AlgorithmIndex | MDAlgorithms\DataHandling

Source

C++ header: ChangeQConvention.h

C++ source: ChangeQConvention.cpp