gnuplot

[Drechsel Wolf]

>> After installed emacs from macports, gnuplot can be installed  
>> correctly. It seems the dependency on emacs is needed by gnuplot  
>> indeed.

I think this is not true:

> bub$ port installed emacs
> None of the specified ports are installed.
> Martins-G4:~ bub$ port installed gnuplot
> The following ports are currently installed:
>   gnuplot @4.2.5_1+darwin
>   gnuplot @4.4.2_1 (active)

HTH, Wolf