relax 4.1.3

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This is a minor bugfix release that re-enables the reading of Bruker Dynamics Center NOE data files.


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 4.1.3
(14 June 2019, from master)




  • FSF Copyright Validation configuration: Blacklisted the PDF user manual. This allows the checking of relax tags to pass.
  • Release checklist document: Describe the relax fork of latex2html.
  • API manual: No longer raise errors when parsing the pystarlib docstrings.
  • Release checklist document: Minor improvements to match the practical aspects of the release.
  • User manual: Proper abbreviation of the "Quarterly Reviews of Biophysics" journal name.
  • Test suite: New system test to catch the failure of reading newer Bruker DC NOE data files. The system test is Bruker.test_bug_15_NOE_read_fail and it catches bug #15. The test uses truncated data from Stefano Ciurli as attached to the bug report.
  • Bruker DC: Silence the warnings about spin names already existing. The user does not need to see such warnings.
  • Travis CI config: Explicitly set 'trusty' as the distribution name for the default images. In the support request titled "Failure of GUI testing via xvfb" (, the Travis CI support staff suggested that we explicitly set 'dist: trusty'.
  • Bruker DC: A different way to silence the warnings about spin names already existing. The previous attempt at setting the force flag to True was causing failures in a number of system tests. Therefore a new flag 'warn_flag' has been added to pipe_control.mol_res_spin.name_spin() to allow warnings to be explicitly silenced.
  • Travis CI config: Use Xenial for running all tests on Linux and Python 2.7. This is from the support request titled "Failure of GUI testing via xvfb" (
  • Travis CI config: Manual support for old SciPy versions on Python 2.7. SciPy 1.3.0 now requires Python ≥ 3.5. Therefore the OLD_MATPLOTLIB variable has been renamed to OLD_PY2_PACKAGES and, when set, is now used to install old matplotlib and scipy versions when using Python 2.7.
  • Travis CI config: Deactivate the Mac OS X updates to avoid timeouts. The 'brew update' and 'brew upgrade python3' take up half of the build time for the Mac OS X target. This large amount of time sometimes causes this build to hit the Travis CI time limits.


  • Bruker DC: Support for handling newer versions of the NOE data file. This fixes bug #15, the failure to read newer versions of the Bruker DC NOE data files. This was simply a parsing issue as the NOE column is now "NOE [ ]" whereas previous DC versions used the text "NOE" or "NOE [none]".


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