degelder               package:wccsom               R Documentation

_P_o_w_d_e_r _p_a_t_t_e_r_n _d_a_t_a _b_y _R_e_n_e _d_e _G_e_l_d_e_r

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

     X-ray powder patterns of 131 crystallographic structures,
     contributed by Rene de Gelder.

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

     data(degelder)

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

     This yields a list with three components: the first component,
     '"patterns"', is a matrix of 131 rows and 441 variables,
     containing the powder patterns; the second component is "thetas",
     the 2theta values at which intensities have been measured. The
     final component, '"properties"', gives information on the
     crystallographic properties of the structures.

_S_o_u_r_c_e:

     Rene de Gelder, Institute of Molecules and Materials, Radboud
     University Nijmegen.

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

     data(degelder)
     set.seed(1)
     geldermap <- WCCSOM(degelder$patterns, somgrid(6, 6, "hexagonal"))
     options(digits = 3)
     summary(geldermap, "unit", nr=1, properties = degelder$properties)

