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{{infobox relax release| version = Description 1.2.3| prev =1.2.2| next = 1.2.4| keywords = Relaxation curve-fitting| type = Major bugfix| date = 1 March 2006| manual = yes}}
This is a bug fix release which corrects a segfault crash of the exponential relaxation curve-fitting modules. The bug was introduced by the shift from the makefile to Sconstruct build system. The full descriptions of all bug fixes are:
* The printout of the [http://www.nmr-relax.com/manual/relax_fit_select_model.html relax_fit.select_model function] has been fixed.
* The [http://www.nmr-relax.com/api/1.2/script-sconstruct-module.html sconstruct script ] can now execute the [http://www.nmr-relax.com/api/1.2/docs.latex.fetch_docstrings-module.html fetch_docstrings code]. The path previously did not include the current working directory and hence the module could not be imported.
* Unselected residues are now properly ignored for the [http://www.nmr-relax.com/manual/value_read.html value.read function] as well as all the Dasha [[DASHA]] functions.
* The [http://www.nmr-relax.com/manual/value_read.html value.read function] contained a bug where the residue number from the file was not being read. Instead the integer position within the file was being used as the residue number.
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* The model-free spectral density function 'calc_S2f_S2s_ts_djw_dS2s' does not exist. Therefore when using the model with the parameters {{{:S2f}}, {{:S2s}}, {{:tau_s}}}, the program would throw an error and stop. The function is actually [http://www.nmr-relax.com/api/1.2/maths_fns.jw_mf-module.html#calc_S2f_tf_S2s_ts_djw_dS2s calc_S2f_tf_S2s_ts_djw_dS2s]. The factor 'data.s2f_s2' also had to be calculated in [http://www.nmr-relax.com/api/1.2/maths_fns.jw_mf_comps-module.html maths_fns/jw_mf_comps.py].
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== Links ==
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For reference, the following links are also part of the announcement for this release:
* [http://wiki.nmr-relax.com/Relax_1.2.3 Official release notes]
* The model-free spectral density function 'calc_S2f_S2s_ts_djw_dS2s' does not exist. Therefore when using the model with the parameters ''{S<sub>f</sub><sup>2</sup>, S<sub>s</sub><sup>2</sup>, τ<sub>s</sub>}'', the program would throw an error and stop. The function is actually 'calc_S2f_tf_S2s_ts_djw_dS2s'. The factor 'data.s2f_s2' also had to be calculated in 'maths_fns/jw_mf_comps.py'.
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== See also ==
* [http://www.nmr-relax.com/api/1.2/ The relax 1.2 API documentation]{{:relax release see also}}[[Category:Release_NotesRelaxation curve-fitting analysis]]