Good day, The capabilities function gives a logical result of which features R has been compiled with. Is there a more advanced variety of the function that will give the version number of the library, or its system path, rather than simply TRUE ? -------------------------------------- Dario Strbenac PhD Student University of Sydney Camperdown NSW 2050 Australia
On 28 January 2016 at 09:00, Dario Strbenac wrote:
| The capabilities function gives a logical result of which features R has been
compiled with. Is there a more advanced variety of the function that will give
the version number of the library, or its system path, rather than simply TRUE ?
Both can _change_ when dynamic linking is involved [1]. So I'd say that is
a job
for your operating system.
Eg on mine and taking png:
edd at max:~$ r -e 'print(capabilities()[["png"]])'
[1] TRUE
edd at max:~$ ldd /usr/lib/R/modules/R_X11.so | grep png
libpng12.so.0 => /lib/x86_64-linux-gnu/libpng12.so.0
(0x00007f150324d000)
edd at max:~$ dpkg -S /lib/x86_64-linux-gnu/libpng12.so.0
libpng12-0:amd64: /lib/x86_64-linux-gnu/libpng12.so.0
edd at max:~$
Dirk
[1] Presumably only minor numbers change while the ABI remains the same.
--
http://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org