[MINC-users] nu_evaluate crash

[Simon Fristed Eskildsen]

Hi all,
I just tried to run nu_evaluate and it crashes on mincmath:

nu_evaluate -keep -mapping test_N3.imp test.mnc test_N3.mnc
[nu_evaluate] [---] [2007-03-29 14:51:06] 
/gruppe/ad_mri/Opteron/pack/bin/evaluate_field -clobber -verbose -like 
test.mnc test_N3.imp /var/tmp/nu_evaluate_16514//test_N3_field.mnc
Not implemented yet in cache_volume_range_has_changed()
Not implemented yet in cache_volume_range_has_changed()
[nu_evaluate] [---] [2007-03-29 14:51:10] 
/gruppe/ad_mri/Opteron/pack/bin/mincmath -clobber -verbose -copy_header 
-zero -div test.mnc /var/tmp/nu_evaluate_16514//test_N3_field.mnc 
test_N3.mnc
Files /var/tmp/nu_evaluate_16514//test_N3_field.mnc and test.mnc have 
different coordinate spacings (zspace)
nu_evaluate: crashed while running mincmath (termination status=256)

The headers reveal that spacing is "irregular" on test.mnc while 
"regular__" on test_N3_field.mnc
I guess this is the problem that causes mincmath to complain.
Is this expected behaviour of nu_evaluate? Do I need to make the spacing 
in input minc file "regular__" ? If so, can I just edit the spacing 
variable and remove the direction_cosines variable (which I guess is 
only present in irregular spaced files)?

Thanks,
Simon