R: Perturbation of Mixing Proportions

lambda.pert {mixtools} | R Documentation

## Perturbation of Mixing Proportions

### Description

Perturbs a set of mixing proportions by first scaling the mixing proportions, then taking the logit of the scaled values, perturbing them, and inverting back to produce a set of new mixing proportions.

### Usage

    lambda.pert(lambda, pert)

### Arguments

`lambda` | A vector of length k giving the mixing proportions which are to be perturbed.
`pert` | A vector (possibly of length k-1) for which to perturb `lambda`. If the length is less than k, then values of the vector are recycled. If length is greater than k, then only the first k values are used.

### Details

This function is called by `regmixMH`.

### Value

`lambda.pert` returns new `lambda` values perturbed by `pert`.

### See Also

`regmixMH`

### Examples

    set.seed(100)
    x <- c(0.5, 0.2, 0.3)
    lambda.pert(x, rcauchy(3))

[Package mixtools version 1.2.0 Index]