[MINC-users] Running MINC tools from the www user

[Burt Crépeault]

Hi again,

In my current development, I'm executing MINC tools from an Apache-run PHP
script, therefore running under the default www user. The following command
runs well from the command prompt but gives errors when run from www:

/usr/local/minc2/bin/nu_correct -clobber -mapping_dir
/Library/MEDICS/data/images/10188/bl/MR.T1.MP-RAGE/1007 -iterations
100 -shrink 3 -fwhm 0.1 -distance 100
/Library/MEDICS/data/images/10188/bl/MR.T1.MP-RAGE/1004/Library.MEDICS.data.images.10188.bl.MR.T1.MP-RAGE.1004.1.10004.[mnc.d2m].Br.12_p2.mnc
/Library/MEDICS/data/images/10188/bl/MR.T1.MP-RAGE/1007/Library.MEDICS.data.images.10188.bl.MR.T1.MP-RAGE.1007.1.10007.[mnc.d2m+mnc.nuc].Br.22_p2.mnc

   [7]:     [_www at pita.crulrg.local:/Library/WebServer/Documents/]
[2008-04-15 16:19:39] running:
   [8]:       /usr/local/minc2/bin/nu_estimate_np_and_em -parzen -log
-sharpen 0.1 0.01 -iterations 100 -stop 0.001 -shrink 3 -auto_mask
-nonotify -b_spline 1 -distance 100 -quiet -execute -clobber
-nokeeptmp -tmpdir /var/tmp/nu_correct_32893/
'/Library/MEDICS/data/images/10188/bl/MR.T1.MP-RAGE/1004/Library.MEDICS.data.images.10188.bl.MR.T1.MP-RAGE.1004.1.10004.[mnc.d2m].Br.12_p2.mnc'
'/Library/MEDICS/data/images/10188/bl/MR.T1.MP-RAGE/1007/Library.MEDICS.data.images.10188.bl.MR.T1.MP-RAGE.1007.1.10007.[mnc.d2m+mnc.nuc].Br.22_p2.imp'
   [9]:
   [10]:     Assertion failed at line 742 in file templates/CachedArray.cc
   [11]:     nu_estimate_np_and_em: crashed while running volume_stats
(termination status=256)
   [12]:     nu_correct: crashed while running nu_estimate_np_and_em
(termination status=256)

Usually, this type of error can be traced to a bad permission somewhere, or
to an environment variable that's incorrectly set for the www user.
Unfortunately in this case, I'm a little short on data to troubleshoot it
myself. What does "Assertion failed" on line [10] mean?

Any help would be greatly appreciated.

Thanks,

-- 
Burt Crépeault
Research Assistant
Centre de Recherche de l'Université Laval - Robert-Giffard
418-663-5741, ext 6844