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GetQsInQENSData v1¶

../_images/ImageNotFound.png — Enable screenshots using DOCS_SCREENSHOTS in CMake¶

Summary ¶

Get Q-values in the vertical axis of a MatrixWorkspace containing QENS S(Q,E) of S(theta,E) data.

Properties ¶

Name	Direction	Type	Default	Description
InputWorkspace	Input	MatrixWorkspace	Mandatory	Input QENS data as MatrixWorkspace
RaiseMode	Input	boolean	False	Set to True if an Exception, instead of any empty list of Q values, is desired.
Qvalues	Output	dbl list

Extract the values for momentum transfer stored in the vertical axis of a MatrixWorkspace representing the dynamic factor \(S(Q,E)\), or compute the values of a MatrixWorkspace representing the dynamic factor \(S(\theta,E)\).

Usage ¶

** Extract Q values from \(S(Q,E)\) workspace **

workspace = LoadDaveGrp("BASIS_59689_divided.dat")
qvalues = GetQsInQENSData(workspace)
# print the first three values
vals = ' '.join(['{0:6.3f}'.format(Q) for Q in qvalues[0:3]])
print("'{}'".format(vals))

' 0.300  0.500  0.700'

workspace = LoadNexus("osiris97944_graphite002_red")
qvalues = GetQsInQENSData(workspace)
# print the first three values
vals = ' '.join(['{0:6.3f}'.format(Q) for Q in qvalues[0:3]])
print("'{}'".format(vals))