pTAI: Compute the Phylostratum Contribution to the Global Transcriptome Age Index
Description
This function takes a standard ExpressionSet object and computes the partial contribution of the different phylostrata (ps) to the global Transcriptome Age Index profile.
Usage
pTAI(ExpressionSet)
Arguments
ExpressionSet
a standard PhyloExpressionSet object.
Details
This way of computing the partial contribution of the different phylostrata (ps) to the global Transcriptome Age Index profile was introduced by Domazet-Loso and Tautz, 2010. This function (pTAI) computes the partial TAI contribution for each phylostratum and each developmental stage and returns a data matrix storing the partial TAI contribution value for each phylostratum and each developmental stage.
References
Domazet-Loso T. and Tautz D. (2010). A phylogenetically based transcriptome age index mirrors ontogenetic divergence patterns. Nature (468): 815-818.