Cairo.capture

Cairo.snapshot

<code>Cairo.capture</code> is essentially the same as
 <code>dev.capture(native=TRUE)</code> with the exception that it works where
 <code>dev.capture</code> doesn't such as <code>onSave</code> callbacks.
<code>Cairo.snapshot</code> is very similar to <code>recordPlot</code> except it
 also allows to retrieve the last snapshot.

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.capture 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> <dt>last</dt>
<dd>logical, if <code>FALSE</code> then a new snapshot is created
 (exactly the same as <code><a href="/link/recordPlot()?package=Cairo&version=1.6-2" data-mini-rdoc="Cairo::recordPlot()">recordPlot()</a></code>), if <code>TRUE</code> then the last
 known snapshot is retrieved, if <code>NA</code> then a snapshot is created
 first, but if the display list is empty last snapshot is retrieved
 instead.</dd></dl>

Arguments

Author

Capture contents of an image backend or a display list snapshot. — Cairo.capture

<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>

 <dt>last</dt>
<dd>logical, if <code>FALSE</code> then a new snapshot is created
 (exactly the same as <code><a href='https://rdrr.io/r/grDevices/recordplot.html'>recordPlot()</a></code>), if <code>TRUE</code> then the last
 known snapshot is retrieved, if <code>NA</code> then a snapshot is created
 first, but if the display list is empty last snapshot is retrieved
 instead.</dd>

</dl>

Cairo.capture: Capture contents of an image backend or a display list snapshot.

Description

Usage

Value

Arguments

Author