bqtl (version 1.0-7)

make.varcov: Create moment matrices

Description

Create a moment matrix of the marker variables and of the regressors by the phenotype variable. For use in regression modelling on the markers.

Usage

make.varcov(regressor.matrix, y, subset=is.finite(y), casewt=NULL)

Arguments

regressor.matrix

The object produced by make.regressor.matrix

y

A vector of phenotype information with the same number of elements as there are rows in regressor.matrix

subset

Logical vector with the same number of elements as there are rows in regressor.matrix to indicate which rows to keep.

casewt

Optional vector of case weights.

Value

• A list with components
• var.x
  Moment matrix of the marker regressor variables
• cov.xy
  Moment matrix of the marker regressor variables versus the phenotype variable
• var.y
  The Second central moment of the phenotype variable
• df
  sum(subset==TRUE) - 1