Saving Voronoi in the database is relatively slow

[Edouard2laire]

• Saving MRI (add_vol function) is quite slow ( from 10 to 16sec)
• https://github.com/Nirstorm/nirstorm/blob/master/bst_plugin/forward/process_nst_compute_voronoi.m#L226-L293

Case1:

Case2:

Code:

SubjectNames = {'Subject01'};

profile on
% Process: Compute Voronoi volume-to-cortex interpolator
sFiles = bst_process('CallProcess', 'process_nst_compute_voronoi', [], [], ...
    'subjectname',  SubjectNames{1}, ...
    'do_grey_mask', 1);
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[Edouard2laire]

here is the profile after #225. Seems hard to improve further.

edit: This can be improved using v6 option when saving : #226