dalton               package:dichromat               R Documentation

_E_f_f_e_c_t_s _o_f _d_a_l_t_o_n_i_s_m (_r_e_d-_g_r_e_e_n _c_o_l_o_r _b_l_i_n_d_n_e_s_s)

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

     A 256-color palette as it would appear with normal vision, and
     with two types of red-green colorblindness: protanopia and
     deuteronopia.

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

     data(dalton)
     data(dalton.colors)

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

     'dalton'{  A 256x3x3 array. The columns index the red, green and
     blue color values, the layers index the vision type.}
     'dalton.colors'{A data frame of colors, with column names
     'normal', 'protan', 'deutan'.}

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

     <URL: http://tsi.enst.fr/~brettel/CRA24/table2.html>

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

     F. Vinot, H. Brettel and J. D. Mollon (1999) Digital video
     colourmaps for checking the legibility of displays by dichromats.
     Color Research and Application 24, 243-252.

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

     data(dalton)
      par(mfrow=c(3,1))
      image(matrix(1:256,128),col=dalton.colors$deutan)
      image(matrix(1:256,128),col=dalton.colors$protan)
      image(matrix(1:256,128),col=dalton.colors$normal)

