devNew

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Opens a new device

Opens a new device.

Keywords
utilities, device
Usage
devNew(type=getOption("device"), ..., aspectRatio=1, par=NULL, label=NULL)
Arguments
type
A character string specifying the type of device to be opened. This string should match the name of an existing device function.
...
Additional arguments passed to the device function, e.g. width and height.
aspectRatio
A numeric ratio specifying the aspect ratio of the image. See below.
par
An optional named list of graphical settings applied, that is, passed to par, immediately after opening the device.
label
An optional character string specifying the label of the opened device.
Value

• Returns what the device function returns.

Aspect ratio

The aspect ratio of an image is the height relative to the width. If argument height is not given (or NULL), it is calculated as aspectRatio*width as long as they are given. Likewise, if argument width is not given (or NULL), it is calculated as width/aspectRatio as long as they are given. If neither width nor height is given, or if both are given, then aspectRatio is ignored.

devDone() and devOff(). For simplified generation of image files, see devEval().