unfactor {dmm} | R Documentation |

## Convert a vector from factor to numeric

### Description

Convert a vector (such as a dataframe column) from factor to numeric. Non-numeric values will coerce to NA.

### Usage

```
unfactor(x)
```

### Arguments

`x` |
A vector of type factor. Typically this would be one column of a dataframe. |

### Details

This function may be useful when preparing a dataframe for `dmm()`

. It is a common problem for dataframe columns to be automatically made type factor when constructing the dataframe with functions such as `read.table`

, due to the presence of a small number of non-numeric values. Dataframe columns used as traits or as covariates should not be of type factor.

### Value

A vector of numeric values is returned.

### Author(s)

Neville Jackson

### See Also

Functions `dmm()`

, `read.table()`

### Examples

```
library(dmm)
tmp <- as.factor(c(1,2,3))
str(tmp)
utmp <- unfactor(tmp)
str(utmp)
rm(tmp)
rm(utmp)
```

[Package

*dmm*version 2.1-10 Index]