colSumamrize package:preprocessCore R Documentation _S_u_m_m_a_r_i_z_e _t_h_e _c_o_l_u_m_n _o_f _m_a_t_r_i_c_e_s _D_e_s_c_r_i_p_t_i_o_n: Compute column wise summary values of a matrix. _U_s_a_g_e: colSummarizeAvg(y) colSummarizeAvgLog(y) colSummarizeBiweight(y) colSummarizeBiweightLog(y) colSummarizeLogAvg(y) colSummarizeLogMedian(y) colSummarizeMedian(y) colSummarizeMedianLog(y) colSummarizeMedianpolish(y) colSummarizeMedianpolishLog(y) _A_r_g_u_m_e_n_t_s: y: A numeric matrix _D_e_t_a_i_l_s: This groups of functions summarize the columns of a given matrices. '_c_o_l_S_u_m_m_a_r_i_z_e_A_v_g' Take means in column-wise manner '_c_o_l_S_u_m_m_a_r_i_z_e_A_v_g_L_o_g' 'log2' transform the data and then take means in column-wise manner '_c_o_l_S_u_m_m_a_r_i_z_e_B_i_w_e_i_g_h_t' Summarize each column using a one step Tukey Biweight procedure '_c_o_l_S_u_m_m_a_r_i_z_e_B_i_w_e_i_g_h_t_L_o_g' 'log2' transform the data and then summarize each column using a one step Tuke Biweight procedure '_c_o_l_S_u_m_m_a_r_i_z_e_L_o_g_A_v_g' Compute the mean of each column and then 'log2' transform it '_c_o_l_S_u_m_m_a_r_i_z_e_L_o_g_M_e_d_i_a_n' Compute the median of each column and then 'log2' transform it '_c_o_l_S_u_m_m_a_r_i_z_e_M_e_d_i_a_n' Compute the median of each column '_c_o_l_S_u_m_m_a_r_i_z_e_M_e_d_i_a_n_L_o_g' 'log2' transform the data and then summarize each column using the median '_c_o_l_S_u_m_m_a_r_i_z_e_M_e_d_i_a_n_p_o_l_i_s_h' Use the median polish to summarize each column, by also using a row effect (not returned) '_c_o_l_S_u_m_m_a_r_i_z_e_M_e_d_i_a_n_p_o_l_i_s_h_L_o_g' 'log2' transform the data and then use the median polish to summarize each column, by also using a row effect (not returned) _V_a_l_u_e: A list with following items: Estimates: Summary values for each column. StdErrors: Standard error estimates. _A_u_t_h_o_r(_s): B. M. Bolstad bmb@bmbolstad.com _E_x_a_m_p_l_e_s: y <- matrix(10+rnorm(100),20,5) colSummarizeAvg(y) colSummarizeAvgLog(y) colSummarizeBiweight(y) colSummarizeBiweightLog(y) colSummarizeLogAvg(y) colSummarizeLogMedian(y) colSummarizeMedian(y) colSummarizeMedianLog(y) colSummarizeMedianpolish(y) colSummarizeMedianpolishLog(y)