Cairo.serial

<code>Cairo.serial</code> returns an integer that is increased with every
 plotting operation on the device. This allows user code to determine
 whether any new content has been added to the device since it was last
 checked.

device

R graphics device using cairographics library that can be used to create high-quality vector (PDF, PostScript and SVG) and bitmap output (PNG,JPEG,TIFF), and high-quality rendering in displays (X11 and Win32). Since it uses the same back-end for all output, copying across formats is WYSIWYG. Files are created without the dependence on X11 or other external programs. This device supports alpha channel (semi-transparent drawing) and resulting images can contain transparent and semi-transparent regions. It is ideal for use in server environments (file output) and as a replacement for other devices that don't have Cairo's capabilities such as alpha support or anti-aliasing. Backends are modular such that any subset of backends is supported.

Simon Urbanek

Cairo

R Graphics Device using Cairo Graphics Library for Creating
High-Quality Bitmap (PNG, JPEG, TIFF), Vector (PDF, SVG,
PostScript) and Display (X11 and Win32) Output

Cairo.serial function

<dl> <dt>device</dt>
<dd>device number or an object of the class <code>Cairo</code> (as
 obtained from the <code>Cairo</code> function).</dd></dl>

Arguments

Author

Check for changes in the graphics state of Cairo devices. — Cairo.serial

<dl>

 <dt>device</dt>
<dd>device number or an object of the class <code>Cairo</code> (as
 obtained from the <code>Cairo</code> function).</dd>

</dl>

Cairo.serial: Check for changes in the graphics state of Cairo devices.

Description

Usage

Value

Arguments

Author