dcorrelate.sh(1)       Grass User's Manual	 dcorrelate.sh(1)



NNAAMMEE
       _d_c_o_r_r_e_l_a_t_e_._s_h   -  Graphically  displays  the  correlation
       among from two to four raster map  layers  in  the  active
       frame on the graphics monitor.
       _(_G_R_A_S_S _S_h_e_l_l _S_c_r_i_p_t_)

SSYYNNOOPPSSIISS
       ddccoorrrreellaattee..sshh _l_a_y_e_r_1 _l_a_y_e_r_2 [_l_a_y_e_r_3 [_l_a_y_e_r_4]]

DDEESSCCRRIIPPTTIIOONN
       _d_c_o_r_r_e_l_a_t_e_._s_h  is  a  C-shell (csh(1)) script that graphi-
       cally displays the results of an _r_._s_t_a_t_s run on two raster
       map  layers.  This shell script is useful for highlighting
       the correlation (or lack of it) among data layers.


       The results are displayed in the active display	frame  on
       the  user's  graphics  monitor.	 _d_c_o_r_r_e_l_a_t_e_._s_h erases the
       active frame before displaying results.

OOPPTTIIOONNSS
   PPaarraammeetteerrss::
       _l_a_y_e_r_1 _l_a_y_e_r_2 [_l_a_y_e_r_3 [_l_a_y_e_r_4]]
	      The names of from two to four existing  raster  map
	      layers to be included in the correlation.


NNOOTTEESS
       This  is a shell script that uses _r_._s_t_a_t_s and the UNIX _a_w_k
       command to calculate the correlation  among  data  layers,
       and uses _d_._t_e_x_t and _d_._g_r_a_p_h to display the results.


       If three or four map layers are specified, the correlation
       among each combination of two data layers is displayed.


       This command is written	for  _/_b_i_n_/_c_s_h.	 If  your  system
       doesn't support this shell, don't install this script.

FFIILLEESS
       This  program is simply a shell script.	Users are encour-
       aged to make their own shell script programs using similar
       techniques.  See $GISBASE/scripts/dcorrelate.sh.

SSEEEE AALLSSOO
       The UNIX _a_w_k command


       _d_._t_e_x_t, _d_._g_r_a_p_h, _r_._c_o_i_n, _r_._s_t_a_t_s

AAUUTTHHOORR
       Michael	 Shapiro,   U.S.Army   Construction   Engineering
       Research Laboratory

       _L_a_s_t _c_h_a_n_g_e_d_: _$_D_a_t_e_: _2_0_0_2_/_0_1_/_2_5 _0_5_:_4_5_:_3_3 _$



GRASS 5.0					 dcorrelate.sh(1)
