message: Setting default frequency
diff: @@ -54,7 +54,7 @@ static Vector do_params_(0); // Axis Start, Axis End, Rod Radius,
  void dipole_oscillator(const Vector &x, Vector &j);
  void j_src(const Vector &x, Vector &j) { dipole_oscillator(x, j); }
  -static double freq_;
  +static double freq_ = 1.0;
  // Prints the program's logo to the given output stream
  void display_banner(ostream & os);
  