triogramX              package:SparseM              R Documentation

_A _D_e_s_i_g_n _M_a_t_r_i_x _f_o_r _a _T_r_i_o_g_r_a_m _P_r_o_b_l_e_m

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

     This is a design matrix arising from a bivariate smoothing problem
     using penalized triogram fitting.  It is used in the SparseM
     vignette to illustrate the use of the sparse matrix image
     function.

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

     data(triogramX)

_F_o_r_m_a_t:

     A 375 by 100 matrix stored in compressed sparse row format

