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<section start=references/>* [*Baldwin 2014] A. Baldwin (2014). An exact solution for R2,eff in CPMG experiments in the case of two site chemical exchange. ''J. Magn. Reson.'', '''244''', 114-124. (DOI: [http{{#lst://dx.doi.org/10.1016/j.jmr.2014.02.023 10.1016/j.jmr.2014.02.023]).<section end=references/>Citations|Baldwin14}}
= See also = [* [http://www.nmr-relax.com/api/3.2/ The relax release descriptions]3.2 API documentation][[Category{{:Release_Notes]]relax release see also}}
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{{infobox relax release| version = 3.2.1| prev = 3.2.0| next = 3.2.2| keywords = [[B14]] and [[B14 full]] relaxation dispersion models, [[NS CPMG 2-site expanded]] model, [http://www.nmr-relax.com/manual/structure_delete.html structure.delete user function]| type = Major bugfix| date = 23 May 2014| manual = yes}} == Description ==
<section begin=description/>
This is a major bugfix release which includes the equations for the [[B14]] and [[B14 full]] [[:Category:relaxation dispersionanalysis|relaxation dispersion]] models [Baldwin 2014] introduced with [[relax 2.2.0|relax version 3.2.0]], now being calculated correctly, the [[NS CPMG 2-site expanded]] model correctly handling edge cases where no exchange is expected, and the [http://www.nmr-relax.com/manual/structure_delete.html structure.delete user function] correctly operating when multiple models are loaded into the data store.
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== Download ==
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== CHANGES file ==
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=== Features ===
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=== Changes ===
<section begin=changes/>
* Created the test_ns_cpmg_2site_expanded_no_rex8() relaxation dispersion unit test. This is a demonstration, showing the [[NS CPMG 2-site expanded]] model with no exchange when k<sub>ex</sub> = 1e<sup>5</sup>. I.e. when the motion is too fast for exchange to be observed. This test should be used for all dispersion models to make sure that they model this edge case correctly as well. This follows from http://article.gmane.org/gmane.science.nmr.relax.devel/5906.
* Attempt at fixing [https://gna.org/bugs/?22071 bug #22071, the relax unit test and system test not functioning]. The fix here is that the git commands to show the current subversion revision number only works when run from the relax base directory, or one of the subdirectories. This should now be fixed, as the pipe running the command will first 'cd' to the relax base directory.
* Another attempt at fixing [https://gna.org/bugs/?22071 bug #22071, the relax unit test and system test not functioning]. <nowiki>This time the complicated shell command "cd %s; git svn find-rev $(git rev-parse HEAD)" has been replaced with "cd %s; git svn info".</nowiki>
* Changed most default dispersion parameter values to avoid edge cases where there is no exchange. The Δω parameters were all 0.0 and k<sub>ex</sub> 1e<sup>5</sup>, both of which result in no exchange. If this is ever used for an optimisation starting point - which it never should, apart from development, test suite, and debugging purposes - then the optimisation algorithm will have a very hard time recovering. The p<sub>A</sub> parameter has been changed to 0.90 to set it to a reasonable value while still staying far away from the no exchange condition of p<sub>A</sub> = 1.0. This follows from http://article.gmane.org/gmane.science.nmr.relax.devel/5917.
* Fixes for 3 dispersion system tests for the change in default parameter values. The default values are used in the auto-analysis in the test suite to avoid the grid search. The changed values affected the optimisation of two spins from Flemming Hansen's data located at test_suite/shared_data/dispersion/Hansen/, residue 4 used as an example of no exchange and residue 70 used as an example where data is only available at one field. The system test Relax_disp.test_set_grid_r20_from_min_r2eff_cpmg was also modified as it was directly checking these default values.
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=== Bugfixes ===
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== Links ==
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For reference, the following links are also part of the announcement for this releasecan also be found at following links: * [http://wiki.nmr-relax.com/Relax_3.2.1 Official release noteson the relax wiki].* [https://{{gna link|url=gna.org/forum/forum.php?forum_id=2462 |text=Gna! news item]}}.* [http://article.gmane.org/gmane.science.nmr.relax.announce/55 Gmanemailing list archive].* [http://www.mail-archive.com/relax-announce%40gna.org/msg00048.html The Mail Archive].* [https://mail.gna.org/public/relax-announce/2014-05/msg00001.html Local archives].* [http://marc.info/?l=relax-announce&m=140105764428563&w=2 Mailing list ARChives (MARC)]. {{:Softpedia}}
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== Announcements ==
{{:relax release announcements}}
== References ==
<HarvardReferences />
== See also ==