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= Execute a clustering analysis =
'''Notes about how to select residues for clustering. Based on [http://article.gmane.org/gmane.science.nmr.relax.devel/4442 this email thread:] '''<br>
Clustering is a manual operation and it should not be automated. <br>
It is based on human logic and is highly subjective. <br>
For example it could be decided that one analysis is performed whereby one motional process is assumed, i.e. one kex value for all exchanging
spins. <br>
Or it could be decided that there are two motional processes, so two clusters are created, each having their own kex. <br>
Some spins with bizarre dynamics may be left out as 'free spins' and not used in the cluster. <br>
If you just want all spins with '''Rex''' to be in one cluster, you could just use all spins where '''spin.model''' is not set to '''No Rex'''.
'''Notes about how clustering is performed in relax.'''<br>
All spins of one cluster ID will be optimised as one model. <br>
Several cluster ID will result in all those spins being optimised separately, but again with all spins together. <br>
