# unitType: Return the Units of a Unit Object

 unitType R Documentation

## Return the Units of a Unit Object

### Description

This function returns the units of a unit object.

### Usage

```unitType(x, recurse = FALSE)
```

### Arguments

 `x` A unit object. `recurse` Whether to recurse into complex units.

### Value

For simple units, this will be just a vector of coordinate systems, like `"inches"` or `"npc"`.

More complex units that involve an operation on units return an operator, like `"sum"`, `"min"`, or `"max"`.

When `recurse = TRUE`, the result is always a list and more complex units generate sublists (see the Examples below).

### Author(s)

Thomas Lin Pedersen and Paul Murrell

`unit`

### Examples

```u <- unit(1:5, c("cm", "mm", "in", "pt", "null"))

unitType(u)
unitType(unit(1, "npc"))
unitType(unit(1:3/4, "npc"))
unitType(unit(1:3/4, "npc") + unit(1, "inches"))
unitType(min(unit(0.5, "npc"), unit(1, "inches")))
unitType(unit.c(unit(0.5, "npc"), unit(2, "inches") + unit(1:3/4, "npc"),
unit(1, "strwidth", "hi there")))
unitType(min(unit(1, "in"), unit(1, "npc") + unit(1, "mm")))

unitType(u, recurse=TRUE)
unitType(unit(1, "npc"), recurse=TRUE)
unitType(unit(1:3/4, "npc"), recurse=TRUE)
unitType(unit(1:3/4, "npc") + unit(1, "inches"), recurse=TRUE)
unitType(min(unit(0.5, "npc"), unit(1, "inches")), recurse=TRUE)
unitType(unit.c(unit(0.5, "npc"), unit(2, "inches") + unit(1:3/4, "npc"),
unit(1, "strwidth", "hi there")), recurse=TRUE)
unitType(min(unit(1, "in"), unit(1, "npc") + unit(1, "mm")), recurse=TRUE)
unlist(unitType(min(unit(1, "in"), unit(1, "npc") + unit(1, "mm")),
recurse=TRUE))
```