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  graphically  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 (scattergram).


       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  dis-
       playing 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  encouraged  to  make
       their  own  shell  script programs using similar techniques.  See $GIS-
       BASE/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_: _$_D_a_t_e_: _2_0_0_2_/_0_6_/_1_6 _1_5_:_2_9_:_1_8 _$



GRASS 5.0						      dcorrelate.sh(1)
