IBS_pseudo: Generate IBS pseudo variables
In LGRF: Set-Based Tests for Genetic Association in Longitudinal Studies

Description Usage Arguments Value Examples

If users want to calculate the IBS similarity, this function creates the IBS pseudo variables. This is in order to calculate the IBS similarity in an efficient way.

1	IBS_pseudo(x)

`x`	An n by q matrix of genetic variants.

It returns an n by 3p matrix of pseudo variables for efficiently calculating IBS similarity.

library(LGRF)

# Load data example
# Z: genotype matrix, n by q matrix

data(LGRF.example)
Z<-LGRF.example$Z
A<-IBS_pseudo(Z)

# Then the IBS matrix can be calculated by K.IBS<-AA^T.