CA                package:FactoMineR                R Documentation

_C_o_r_r_e_s_p_o_n_d_e_n_c_e _A_n_a_l_y_s_i_s (_C_A)

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

     Performs Correspondence Analysis (CA) including supplementary row
     and/or column points.

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

     CA(X, ncp = 5, row.sup = NULL, col.sup = NULL, graph = TRUE)

_A_r_g_u_m_e_n_t_s:

       X: a data frame with _n_ rows and _p_ columns, i.e. a
          contingency table

     ncp: number of dimensions kept in the results (by default 5)

 row.sup: a vector indicating the indexes of the supplementary rows

 col.sup: a vector indicating the indexes of the supplementary columns

   graph: boolean, if TRUE a graph is displayed

_V_a_l_u_e:

     Returns a list including: 

     eig: a numeric vector containing all the eigenvalues

     col: a list of matrices with all the results for the column
          variable (coordinates, square cosine, contributions)

     row: a list of matrices with all the results for the row variable
          (coordinates, square cosine, contributions)

 col.sup: a list of matrices containing all the results for the
          supplementary column points (coordinates, square cosine)

 row.sup: a list of matrices containing all the results for the
          supplementary row points (coordinates, square cosine)

    call: a list with some statistics


     Returns the row and column points factor map.

_A_u_t_h_o_r(_s):

     Jrmy Mazet, Franois Husson Franois.Husson@agrocampus-rennes.fr

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

     BENZECRI, J.-P. (1992) _Correspondence Analysis Handbook_,
     New-York : Dekker 
      BENZECRI, J.-P. (1980) _L'analyse des donnes tome 2 : l'analyse
     des correspondances_, Paris : Bordas 
      GREENACRE, M.J. (1993) _Correspondence Analysis in Practice_,
     London : Academic Press

_S_e_e _A_l_s_o:

     'print.CA', 'plot.CA'

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

     data(children)
     res.ca <- CA (children, col.sup = 6:8, row.sup = 15:18)

