i.quantize(1)		      Grass User's Manual		 i.quantize(1)



NNAAMMEE
       ii..qquuaannttiizzee  - An interactive imagery function that creates a raster map
       layer whose color table is based on the red, green, and blue color val-
       ues present in existing, user-specified imagery group files.
       _(_G_R_A_S_S _I_m_a_g_e _P_r_o_c_e_s_s_i_n_g _P_r_o_g_r_a_m_)

SSYYNNOOPPSSIISS
       ii..qquuaannttiizzee

DDEESSCCRRIIPPTTIIOONN
       _i_._q_u_a_n_t_i_z_e  is  an interactive imagery function that allows the user to
       create a new raster map layer whose color table values are based on the
       red,  green, and blue color values present in (as many as) three raster
       map layers in an imagery group.


       The user is first asked to enter the name of  the  imagery  group  from
       whose map layers red, green, and blue color values are to be extracted.
       The user is then shown a listing of  imagery  files  in	the  specified
       group, and is asked to indicate which files in the group are to be used
       for red, green, and blue colors in the new map layer.  Each color (red,
       green, and blue) must be specified once and only once.


       The  user  is  also  asked to assign a name to the new raster map layer
       output.

NNOOTTEESS
       This program is interactive and requires no command line arguments.
       The input files must ALL be within the range of 0-255.

SSEEEE AALLSSOO
       _G_R_A_S_S _T_u_t_o_r_i_a_l_: _I_m_a_g_e _P_r_o _c_e_s_s_i_n_g


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RREEFFEERREENNCCEESS
       Paul Heckbert, 1982.  _C_o_l_o_r _I_m_a_g_e _Q_u_a_n_t_i_z_a_t_i_o_n _f_o_r  _F_r_a_m_e  _B_u_f_f_e_r  _D_i_s_-
       _p_l_a_y, SIGGRAPH '82 Proceedings, page 297.

AAUUTTHHOORR
       David Gerdes, U.S. Army Construction Engineering Research Laboratory

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GRASS 5.0							 i.quantize(1)
