Oh, as the GUI is build on top of the auto-analysis, you just do the
same thing.  But just with the 'Previous run directory' input element
and the 'cluster' button.  If you don't use the auto-analysis, that is
a completely different story.  Then one should look at the
auto-analysis relax script auto_analyses/relax_disp.py to see how it
is done there, and replicate that.

Regards,

Edward



On 28 August 2013 13:47, Edward d'Auvergne <[email protected]> wrote:
> Hi,
>
> We should add many more of these details to the dispersion chapter of
> the relax manual!  So for the dispersion auto-analysis, there is the
> 'pre_run_dir' argument.  To use clustering, you just define the
> cluster with the relax_disp.cluster user function, and then set
> 'pre_run_dir' to the directory of non-clustered results.  That's it.
> The auto-analysis takes care of the rest.
>
> Regards,
>
> Edward
>
>
> On 28 August 2013 13:43, Troels Emtekær Linnet <[email protected]> wrote:
>> Hi Edward.
>>
>> Allright, I see your point. :-)
>>
>> Now I am trying to figure out how to do a clustering analysis.
>>
>> I have added to the wiki:
>> http://wiki.nmr-relax.com/Tutorial_for_Relaxation_dispersion_analysis_cpmg_fixed_time_recorded_on_varian_as_fid_interleaved#Inspecting_results_from_the_relax_analysis
>>
>> But I am unsure if I made the clustering correct.
>>
>> It is related to copying of the parameters, and running the
>> minimization with the clustered analysis residues.
>>
>> I looked up in the relax disp manual: "relax disp.parametercopy".
>> (I think the prompt example i wrong?)
>>
>> I can't seem to find a section how to make the minimization to run
>> with a clustering or residues. :-)
>>
>> Thanks :-)
>>
>> Troels Emtekær Linnet
>>
>>
>> 2013/8/28 Edward d'Auvergne <[email protected]>:
>>> Hi,
>>>
>>> This model selection technique is called Akaike's Information Criteria
>>> (AIC).  See http://www.nmr-relax.com/refs.html#dAuvergneGooley03 for
>>> details on this.  How would you produce a plot in Grace of the models
>>> selected?  I don't know how this would work for the dispersion models.
>>>  In a model-free analysis I have deliberately taken the decision to
>>> not create such a plot.  In model-free, relax supports models m0 to
>>> m9, so these could be plotted as 0 to 9 on the Y-axis.  But this is
>>> not done and will never be implemented.  The reason is because the
>>> information about which model is selected is worthless.  What is
>>> important is the dynamics extracted.  This is especially the case of
>>> nested models.  Just because a parameter is missing from a model, this
>>> does not mean that it is not present.  For example there are
>>> model-free models without the Rex parameter.  If these are selected,
>>> this does not mean that Rex is not present.  It means that Rex is
>>> statistically insignificant in the current data set.  Model
>>> differences are an academic question and is not interesting in
>>> practice.  Sometimes the AIC value for two nested models is very
>>> similar and that means that the parameter different between the two is
>>> sitting directly on the boarder of statistical
>>> significance/insignificant.  You could pick either model and it should
>>> not make a statistical difference in the dynamics picture.  It does
>>> not relate to the dynamics, just the judgement of statistically
>>> significance for parameters.  Therefore for practical reasons, for
>>> model-free at least, the interesting plots, text files, and
>>> PyMOL/MOLMOL macros are of the parameter values themselves.  I think
>>> is would be much more of interest to implement PyMOL/MOLMOL macros for
>>> the dispersion parameters so you can see the dynamics directly on the
>>> 3D structure.  This is performed in NESSY and needs to be added to
>>> relax.
>>>
>>> Also note that when you are analysing data, you would probably limit
>>> the number of models to 2-3.  For example if you know that all
>>> residues are experiencing slow exchange, the LM63 fast exchange model
>>> does not need to be used.  It is interesting to see that sometimes the
>>> analytic models are selected and sometimes the numeric models.  But
>>> this is an academic curiosity, it is probably not a practical question
>>> anyone analysing real dispersion data is interested in.  The way an
>>> analysis would normally be performed is to first decide if the
>>> analytic or numeric approach is to be used.  For the analytic approach
>>> with slow exchange, you only need the 'No Rex' and 'CR72' models.  You
>>> could add the 'IT99' model if you can see that pA >> pB in the
>>> spectra, i.e. the pB peak is tiny.  If you take the numeric approach,
>>> then the 'No Rex' and 'NS 2-site expanded' models can be used.  Once
>>> you perform an initial analysis of all residues separately, you can
>>> then look at the dynamics parameter values and judge which spins to
>>> cluster together to have the same model of dynamics, then re-perform
>>> the analysis.
>>>
>>> Regards,
>>>
>>> Edward
>>>
>>>
>>> On 28 August 2013 12:02, Troels Emtekær Linnet <[email protected]> wrote:
>>>> Hi.
>>>>
>>>> After a AIK selection between models
>>>>
>>>> CR72/
>>>> IT99/
>>>> LM63/
>>>> NS 2-site expanded/
>>>>
>>>> I get this selected list of models.
>>>> Would it be possible to add to the grace images in the final directory,
>>>> the selected model and the residue number?
>>>>
>>>> 3 LM63
>>>> 4 CR72
>>>> 5 NS 2-site expanded
>>>> 6 CR72
>>>> 7 LM63
>>>> 8 No Rex
>>>> 9 NS 2-site expanded
>>>> 10 CR72
>>>> 11 LM63
>>>> 12 CR72
>>>> 13 IT99
>>>> 14 NS 2-site expanded
>>>> 15 NS 2-site expanded
>>>> 16 LM63
>>>> 17 CR72
>>>> 18 CR72
>>>> 20 NS 2-site expanded
>>>> 21 NS 2-site expanded
>>>> 22 CR72
>>>> 23 LM63
>>>> 24 LM63
>>>> 25 CR72
>>>> 26 IT99
>>>> 27 NS 2-site expanded
>>>> 28 NS 2-site expanded
>>>> 29 CR72
>>>> 30 NS 2-site expanded
>>>> 31 CR72
>>>> 32 CR72
>>>> 33 IT99
>>>> 34 IT99
>>>> 35 IT99
>>>> 36 IT99
>>>> 37 IT99
>>>> 38 NS 2-site expanded
>>>> 39 LM63
>>>> 40 No Rex
>>>> 41 CR72
>>>> 42 No Rex
>>>> 43 NS 2-site expanded
>>>> 45 IT99
>>>> 46 CR72
>>>> 47 CR72
>>>> 48 IT99
>>>> 49 NS 2-site expanded
>>>> 50 LM63
>>>> 51 NS 2-site expanded
>>>> 52 CR72
>>>> 53 NS 2-site expanded
>>>> 54 NS 2-site expanded
>>>> 55 No Rex
>>>> 56 IT99
>>>> 57 LM63
>>>> 58 LM63
>>>> 59 NS 2-site expanded
>>>> 60 CR72
>>>> 61 IT99
>>>> 62 NS 2-site expanded
>>>> 63 NS 2-site expanded
>>>> 64 CR72
>>>> 65 IT99
>>>> 66 No Rex
>>>> 67 CR72
>>>> 68 No Rex
>>>> 69 NS 2-site expanded
>>>> 70 NS 2-site expanded
>>>> 71 NS 2-site expanded
>>>> 72 NS 2-site expanded
>>>> 73 LM63
>>>> 74 LM63
>>>> 75 NS 2-site expanded
>>>> 76 NS 2-site expanded
>>>> 77 IT99
>>>> 78 CR72
>>>> 79 No Rex
>>>> 80 LM63
>>>> 81 NS 2-site expanded
>>>> 82 IT99
>>>> 83 IT99
>>>> 84 NS 2-site expanded
>>>> 85 LM63
>>>> 86 IT99
>>>>
>>>>
>>>> Troels Emtekær Linnet
>>>>
>>>> _______________________________________________
>>>> relax (http://www.nmr-relax.com)
>>>>
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