According to the global constant
rbsb.mfi a graphical device
is open or not. Must be called before plotting something that ones
want to keep under
When NULL the
argument(s) to be transmitted to the openning device of graphics. Quite useful for specific character and picture sizes, or to get more than one graph into the file.
The file opened for storing the graph is named with three components
separated with dots:
rbsb.fpx, prefix and
rbsb.fpx is a prefix to be modified by the user as convenient.
rbsb.ffg is the number of the current figure incremented by
this function. rbsb.mgr is the suffix associated to the type of graph
(either 'pdf' or 'png').
Nothing but when
is.null(prefix), the graphical device is open and the global
rbsb.ffg is increased \_before\_ with one.
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