Sib-pair Command: ibd


ClassAnalysis and data manipulation command
Nameibd
Arguments <codominant marker> [ ... <codominant marker N>] [pairwise]

Write the estimated mean identity-by-descent sharing at a marker or set of closely linked markers for all relative pairs in each pedigree as a lower triangular matrix or a list of pairs.

The single locus MCMC sampler is used to estimate pairwise IBD sharing at each marker. These estimates are combined as a weighted mean, with cases where IBD is known without error given infinite weight. This assumes that there were no recombination events between the markers in the set to be combined.

Example:

>> include linclex.in
>> ibd D13S162 
>> ibd D13S162 pairwise
>> ibd D13S162 D13S160

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