Execute a Function Call
DESCRIPTION:
Executes a function call, given the name of the function and the argument list.
USAGE: 
do.call(what, args=list())
REQUIRED ARGUMENTS:
what:
character string, giving the name of the function to be called.
OPTIONAL ARGUMENTS:
args:
argument list of the (evaluated) arguments to the called function. the names attribute of args gives the argument names.
VALUE:
the result of the evaluated call.
SEE ALSO:
call creates the call without doing the evaluation.
EXAMPLES: 
do.call("boxplot", list(split(x, group)))
# equivalent to boxplot(split(x,group))


do.call("dist", list(x, metric="binary"))