GetQsInQENSData v1

../_images/GetQsInQENSData-v1_dlg.png

GetQsInQENSData dialog.

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    

Description

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 "'{0}'".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 "'{0}'".format(vals)
' 0.189  0.244  0.298'

Categories: Algorithms | Inelastic\Indirect