R -- R Object Data Store
The R Object File Format is supported for write access, and limited
read access by GDAL.  This format is the native format R uses for objects
saved with the save command and loaded with the load command.
GDAL supports writing a dataset as an array object in this format, and
supports reading files with simple rasters in essentially the same
organization.  It will not read most R object files.
Currently there is no support for reading or writing georeferencing
information. 
Creation Options
-  ASCII=YES/NO: Produce an ASCII formatted file, instead of binary, if set to YES.  Default is NO.
-  COMPRESS=YES/NO: Produces a compressed file if YES, otherwise an uncompressed file.  Default is YES.
See Also: