colon                 package:dprep                 R Documentation

_T_h_e _A_l_o_n _e_t _a_l.'_s _c_o_l_o_n _d_a_t_a_s_e_t

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

     This is the Alon et al.'s Colon cancer dataset which contains
     information of  62 samples on 2000 genes. The samples belong to
     tumor and normal colon tissues.

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

     data(colon)

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

     A data frame with 62 observations on 2000 genes. An additional
     column contains the  tissues classes.

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

     The data is available at:

        *  <URL: http://microarray.princeton.edu/oncology/>

_R_e_f_e_r_e_n_c_e_s:

     Alon U, Barkai N, Notterman DA, Gish, K, Ybarra, S. Mack, D and
     Levine, AJ. (1999). Broad patterns of  gene expression revealed by
     clustering analysis of tumor and normal colon tissues probed by
     oligonucleotide arrays. Proc. Natl. Acad. Sci. USA. 96. p.
     6745-6750.

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

     #Detecting the top 5 outliers in class-2 using the LOF algorithm
     data(colon)
     colon2.lof=maxlof(colon[colon[,2001]==2,],"colon-class2")
     colon2.lof[order(colon2.lof,decreasing=TRUE)][1:5]

