write.matrix              package:MASS              R Documentation

_W_r_i_t_e _a _M_a_t_r_i_x _o_r _D_a_t_a _F_r_a_m_e

_D_e_s_c_r_i_p_t_i_o_n:

     Writes a matrix or data frame to a file or the console, using
     column labels and a layout respecting columns.

_U_s_a_g_e:

     write.matrix(x, file = "", sep = " ", blocksize)

_A_r_g_u_m_e_n_t_s:

       x: matrix or data frame. 

    file: name of output file. The default ('""') is the console. 

     sep: The separator between columns. 

blocksize: If supplied and positive, the output is written in blocks of
          'blocksize' rows.  Choose as large as possible consistent
          with the amount of memory available. 

_D_e_t_a_i_l_s:

     If 'x' is a matrix, supplying 'blocksize' is more memory-efficient
     and enables larger matrices to be written, but each block of rows
     might be formatted slightly differently.

     If 'x' is a data frame, the conversion to a matrix may negate the
     memory saving.

_S_i_d_e _E_f_f_e_c_t_s:

     A formatted file is produced, with column headings (if 'x' has
     them) and columns of data.

_R_e_f_e_r_e_n_c_e_s:

     Venables, W. N. and Ripley, B. D. (2002) _Modern Applied
     Statistics with S._ Fourth edition.  Springer.

_S_e_e _A_l_s_o:

     'write.table'