Transforms a `matrix`

to a long `data.frame`

.

## Usage

```
wide_to_long(from, ...)
to_long(from, ...)
# S4 method for matrix
wide_to_long(from, factor = FALSE, reverse = FALSE)
# S4 method for matrix
to_long(from, factor = FALSE, reverse = FALSE)
```

## Arguments

- from
An object to be coerced.

- ...
Currently not used.

- factor
A

`logical`

scalar: should character string be coerced to`factor`

? Default to`FALSE`

, if`TRUE`

the original ordering is preserved.- reverse
A

`logical`

scalar: should the order of factor levels be reversed? Only used if`factor`

is`TRUE`

. Useful for plotting.