public Vector getParamsFor2DDim(String dim_name) {
        Vector params = new Vector(20, 20);

        String dim1_name = dim_name.substring(0,dim_name.indexOf(','));
        String dim2_name = dim_name.substring(dim_name.indexOf(',') + 1,dim_name.length());

        Dimension dim1 = (Dimension)(dimensions.get(dim1_name));
        Dimension dim2 = (Dimension)(dimensions.get(dim2_name));

        for (Iterator i = parameters.values().iterator(); i.hasNext();) {
            Parameter p = (Parameter)(i.next());
            if ((p.isDimensionedBy(dim1)) && (p.isDimensionedBy(dim2))) {
                params.add(p);
            }
        }
        return (params);
    }