relax 3.1.5

From relax wiki
Jump to: navigation, search

Official relax releases
relax logo
relax version 3.1.5
Previous version Next version
← relax 3.1.4 relax 3.1.6 →

Keywords NOE analysis
Release type Major bugfix
Release date 4 February 2014

The PDF version of the relax 3.1.5 user manual The relax 3.1.5 user manual


This is a major bugfix release which fixes the complete failure of the NOE analysis for most users, a bug introduced in the last relax release ( All users of relax 3.1.4 should upgrade to this version.


The new relax versions can be downloaded from If binary distributions are not yet available for your platform and you manage to compile the binary modules, please consider contributing these to the relax project (described in section 3.6 of the relax manual,


Version 3.1.5
(4 February 2014, from /trunk)




  • Updated the interatom.unit_vectors user function description to add the text '3D structure'. This is in response to the relax-users mailing list message and the change is to clarify the usage of the user function.
  • Created the Noe.test_bug_21591_noe_calculation_fail system test. This is to catch bug #21591 submitted by Martin Ballaschk. This is the complete failure of the NOE analysis. The peak lists attached to the bug report have been included in the test suite to create the system test.
  • Improvements for the steady-state NOE analysis overfit_deselect() method. The spin deselection which occurs at the start of the calc user function call, used to calculate the NOE, is now clearer. Each deselection condition is now explained in detail and the text is now far more informative. In addition, the special condition of all spins being deselected is now caught. If this happens, a RelaxError is raised to prevent the user from going forwards. This should remove confusion as to why the output file is empty.



For reference, the announcement for this release can also be found at following links:

Softpedia also has information about the newest relax releases:


If you would like to receive announcements about new relax versions, please subscribe to the relax announcement mailing list. This list only receives ~10 emails per year. It is archived at the SourceForge archives and in The Mail Archive.

See also