maSelectGnames            package:marray            R Documentation

_S_e_l_e_c_t _g_e_n_e_s _a_c_c_o_r_d_i_n_g _t_o _t_h_e _v_a_l_u_e_s _o_f _a _f_e_w _d_i_f_f_e_r_e_n_t _s_t_a_t_i_s_t_i_c_s

_D_e_s_c_r_i_p_t_i_o_n:

     Select genes by considering the 'union' or 'intersect' of multiple
     statistics.

_U_s_a_g_e:

     maSelectGnames(statdata, crit1 = 50, crit2 = crit1, sub = TRUE, selectstat, operate = c("intersect", "union"))

_A_r_g_u_m_e_n_t_s:

statdata: A numerical matrix where the rows corresponds to genes and
          the columns corresponds to various statistics corresponding
          to a particular gene.

   crit1: The number of points to be selected. If crit1 < 1, the
          crit1*100% spots with the smallest M values will be selected.
          If crit1 >= 1, the crit spots  with the smallest M values are
          selected.

   crit2: Similar to "crit1".   If crit2 < 1, the crit2*100% spots with
          the largest M values will be selected. If crit2 >= 1, the
          crit2 spots with the largest M values are selected.

     sub: A "logical" or "numeric" vector indicating the subset of
          genes to be consider.

selectstat: A integer value indicating the statistics where the final
          ranking is based on.

 operate: The operation used to combined different rankings

_D_e_t_a_i_l_s:

     This functions calls 'stat.gnames' to select say the 100 most
     extreme genes from various statistics and combined the different
     gene lists by either union or intersection.

_V_a_l_u_e:

     A vector of numeric values.

_A_u_t_h_o_r(_s):

     Jean Yee Hwa Yang

_S_e_e _A_l_s_o:

     'stat.gnames', 'order'

_E_x_a_m_p_l_e_s:

     X <- matrix(rnorm(1000), 100,10)
     Xstat <- cbind(mean=apply(X, 1, mean, na.rm=TRUE),
                    var=apply(X, 1, var, na.rm=TRUE))
     maSelectGnames(Xstat, crit1=50)