avesd                package:PROcess                R Documentation

_C_o_m_p_u_t_e _t_h_e _A_v_e_r_a_g_e _S_t_a_n_d_a_r_d _D_e_v_i_a_t_i_o_n _f_o_r _a _S_e_t _o_f _S_p_e_c_t_r_a _a_n_d
_a _G_i_v_e_n _C_u_t_o_f_f _P_o_i_n_t

_D_e_s_c_r_i_p_t_i_o_n:

     Compute the Average Standard Deviation for a Set of Spectra and  a
     Given Cutoff Point

_U_s_a_g_e:

     avesd(Ma, cutoff)

_A_r_g_u_m_e_n_t_s:

      Ma: A matrix with rows the m/z values and columns samples/spectra

  cutoff: A number of m/z

_D_e_t_a_i_l_s:

     For a given cutoff point, the standard deviation of all spectra
     will be  calculated at each m/z above this cutoff point. The
     resulting sd's are then averaged and returned.

_V_a_l_u_e:

     A real number.

