cepha                 package:wccsom                 R Documentation

_C_e_p_h_a_l_o_s_p_o_r_i_n _d_a_t_a _s_e_t

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

     X-ray powder patterns of 20 cephalosporin / antibiotic complexes.

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

     data(cepha)

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

     This yields a list with three components: the first component,
     '"patterns"', is a matrix of 20 rows and 425 variables, containing
     the powder patterns; the second component is '"class.names"', and
     gives information on the class of the crystal structure. The final
     component, "thetas", contains the 2theta values at which
     intensities have been measured.

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

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

     data(cepha)
     plot(cepha$thetas, cepha$patterns[1,], type="l", xlab="2theta", ylab="Counts")
     matplot(cepha$thetas, t(cepha$patterns), type="l",xlab="2theta", ylab="Counts",
             col=as.integer(factor(cepha$class.names))+1, lty=1)

