# at.level

From MCMCglmm v2.29
by Jarrod Hadfield

##### Incidence Matrix of Levels within a Factor

Incidence matrix of levels within a factor

- Keywords
- manip

##### Usage

`at.level(x, level)`

##### Arguments

- x
factor

- level
factor level

##### Value

incidence matrix for level in x

##### See Also

##### Examples

```
# NOT RUN {
fac<-gl(3,10,30, labels=letters[1:3])
x<-rnorm(30)
model.matrix(~at.level(fac,"b"):x)
# }
```

*Documentation reproduced from package MCMCglmm, version 2.29, License: GPL (>= 2)*

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