getInfoInFile           package:makecdfenv           R Documentation

_g_e_t _i_n_f_o_r_m_a_t_i_o_n _f_r_o_m _A_f_f_y_m_e_t_r_i_x _d_a_t_a _f_i_l_e_s

_D_e_s_c_r_i_p_t_i_o_n:

     Get specific information stored in Affymetrix data files (CEL or
     CDF).

_U_s_a_g_e:

     getInfoInFile(filename, type, unit, property, compress = NULL)

_A_r_g_u_m_e_n_t_s:

filename: a file name 

    type: '"CEL"' or '"CDF"' are the only known types.

    unit: the 'unit' to find the information

property: the 'property' of interest

compress: a boolean

_D_e_t_a_i_l_s:

     The data files seem to have a structure of 'units'. A 'unit' start
     with something between square brackets (ex: "[UNIT1]"). The
     parameter 'unit' let one specify in which unit the information of
     interest is located. The 'properties' are constituted of an
     identifier, the sign '=' and the value for the property (ex:
     "numCells=12000").

     If you are planning to use this function, I assume you know the
     what is in CEL and CDF files in details and that you know what are
     doing.

_V_a_l_u_e:

     a character with the value of the 'property'.

_N_o_t_e:

     The code goes through the file until the rigth 'unit' is found.
     Then it looks for the right 'property' further down (eventually
     going through the next units if the property is not found).

_S_e_e _A_l_s_o:

     'read.celfile', 'read.cdffile', 'whatcdf'

