Represents a mathematical expression to plot.

Func represents a mathematical expression that is to be computed by gnuplot itself, as if you would type for example:

        gnuplot> plot sin(x)

into gnuplot itself. The argument to the contructor is a string that should be a mathematical expression. Example:

        g.plot(Func('sin(x)', with='line 3'))

As shorthand, a string passed to the plot method of a Gnuplot object is also treated as a Func:

        g.plot('sin(x)')

__init__ (
        self,
        function,
        **keyw,
        )

get_base_command_string ( self )