OrientedLattice exposed to python issue

[Andrei Savici]

I am trying to get hold of the Oriented lattice object in python. See the following script:

w=Load(Filename='CNCS_7860_event.nxs')
SetUB(Workspace='w',a='2',b='2',c='2')
print "Direct"
print w.sample().getOrientedLattice().getB()
o=w.sample().getOrientedLattice()
print "Assigned"
print o.getB()

One would think that the two methods should yield identical results. Instead, I get

Direct
[[  7.10420549e-316   6.90197301e-310   7.10420549e-316]
 [  4.94065646e-324   4.61967979e-316   4.61968019e-316]
 [  0.00000000e+000   6.90197301e-310   5.00000000e-001]]
Assigned
[[  5.00000000e-01  -8.04061325e-17  -8.04061325e-17]
 [  0.00000000e+00   5.00000000e-01  -3.06161700e-17]
 [  0.00000000e+00   0.00000000e+00   5.00000000e-01]]

[Martyn Gigg]

They certainly should be the same. I'll have a look at why they are not.

[Martyn Gigg]

Refs #4715. Fix OrientedLattice return to avoid unintended copy.

Changeset: fda7b056434ba3ca2cc6c5b8ee5771e78d96b849

[Andrei Savici]

:)

[Stuart Campbell]

This ticket has been transferred to github issue ​5562