solar(cmd, dir, result = TRUE, ignore.stdout = TRUE, ignore.stderr = FALSE, ...)
intern argument to be passed to system function.
The default value is TRUE.ignore.stdout argument to be passed to system function.
The default value is FALSE.ignore.stderr argument to be passed to system function.
The default value is TRUE.The function calls SOLAR via system function,
that invokes the OS command (which is solar) specified by the command argument.
SOLAR is required to be installed in the OS.
This is the core function in the interface between R and SOLAR.