subset_maker          package:approximator          R Documentation

_C_r_e_a_t_e _a _s_i_m_p_l_e _s_u_b_s_e_t _o_b_j_e_c_t

_D_e_s_c_r_i_p_t_i_o_n:

     Given an integer vector whose i-th element is the number of runs
     at level i, return a subset object in echelon form.

_U_s_a_g_e:

     subset_maker(x)

_A_r_g_u_m_e_n_t_s:

       x: A vector of integers

_D_e_t_a_i_l_s:

     In this context, 'x' being in "echelon form" means that

        *  'x' is consistent in the sense of passing 'is.consistent()'

        *  For each i, 'x[[i]] = 1:n' for some n.

_V_a_l_u_e:

     A list object suitable for use as a 'subset' object

_A_u_t_h_o_r(_s):

     Robin K. S. Hankin

_S_e_e _A_l_s_o:

     'is.consistent', 'is.nested', 'is.strict'

_E_x_a_m_p_l_e_s:

     subset_maker(c(10,4,3))

     is.nested(subset_maker(c(4,9,6))) #should be FALSE
     is.nested(subset_maker(c(9,6,4))) #should be TRUE

