thetas {pRoloc} | R Documentation

## Draw matrix of thetas to test

### Description

The possible weights to be considered is a sequence from 0 (favour auxiliary data) to 1 (favour primary data). Each possible combination of weights for `nclass` classes must be tested. The `thetas` function produces a weight `matrix` for `nclass` columns (one for each class) with all possible weight combinations (number of rows).

### Usage

    thetas(nclass, by = 0.5, length.out, verbose = TRUE)

### Arguments

`nclass` | Number of marker classes
`by` | The increment of the weights. One of `1`, `0.5`, `0.25`, `2`, `0.1` or `0.05`.
`length.out` | The desired length of the weight sequence.
`verbose` | A `logical` indicating if the weight sequences should be printed out. Default is `TRUE`.

### Value

A matrix with all possible theta weight combinations.

### Author(s)

Lisa Breckels

### Examples

    dim(thetas(4, by = 0.5))
    dim(thetas(4, by = 0.2))
    dim(thetas(5, by = 0.2))
    dim(thetas(5, length.out = 5))
    dim(thetas(6, by = 0.2))

[Package pRoloc version 1.28.0 Index]