R: Incidence Matrix of Combined Levels within a Factor

at.set {MCMCglmm} | R Documentation

## Incidence Matrix of Combined Levels within a Factor

### Description

Incidence Matrix of Combined Levels within a Factor

### Usage

    at.set(x, level)

### Arguments

`x` | factor
`level` | set of factor levels

### Value

incidence matrix for the set `level` in x

### Author(s)

Jarrod Hadfield j.hadfield@ed.ac.uk

### See Also

`at.level`

### Examples

    fac<-gl(3,10,30, labels=letters[1:3])
    x<-rnorm(30)
    model.matrix(~at.set(fac,2:3):x)

[Package MCMCglmm version 2.32 Index]