dev.interactive {grDevices} | R Documentation

## Is the Current Graphics Device Interactive?

### Description

Test if the current graphics device (or that which would be opened) is interactive.

### Usage

    dev.interactive(orNone = FALSE)

    deviceIsInteractive(name = NULL)

### Arguments

`orNone` | logical; if `TRUE`, the function also returns `TRUE` when `.Device == "null device"` and `getOption("device")` is among the known interactive devices.
`name` | one or more device names as a character vector, or `NULL` to give the existing list.

### Details

The `X11` (Unix), `windows` (Windows) and `quartz` (OS X, on-screen types only) are regarded as interactive, together with `JavaGD` (from the package of the same name) and `CairoWin` and `CairoX11` (from package Cairo). Packages can add their devices to the list by calling `deviceIsInteractive`.

### Value

`dev.interactive()` returns a logical, `TRUE` if and only if an interactive (screen) device is in use.

`deviceIsInteractive` returns the updated list of known interactive devices, invisibly unless `name = NULL`.

### See Also

`Devices` for the available devices on your platform.

### Examples

    dev.interactive()
    print(deviceIsInteractive(NULL))

[Package grDevices version 3.3.0 Index]