| grSoftVersion {grDevices} | R Documentation | 
Report versions of third-party graphics software.
grSoftVersion()
A named character vector containing at least the element
cairo | 
 the version of cairographics in use, or   | 
It may also contain the versions of third-party software used by the X11-based (not cairo-based) bitmap devices:
libpng | 
 the version of   | 
jpeg | 
 the version of the JPEG headers used for compilation,
or   | 
libtiff | 
 the version of   | 
Unless otherwise stated the reported version is that of the (possibly dynamically-linked) library in use at runtime.
Note that libjpeg-turbo used on some Linux distributions
reports its version as "6.2", the IJG version from which it forked.
extSoftVersion for versions of non-graphics software.
grSoftVersion()