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



NNAAMMEE
       ii..sshhaappee	 - Performs spatial shape identification and classification on
       a raster map
       _(_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..sshhaappee
       ii..sshhaappee hheellpp
       ii..sshhaappee iinnppuutt==_n_a_m_e oouuttppuutt==_n_a_m_e [wwiiddtthh==_v_a_l_u_e] [tthhrreesshhoolldd==_v_a_l_u_e]  [oorriieenn--
       ttaattiioonnss==_v_a_l_u_e]

DDEESSCCRRIIPPTTIIOONN
       Reads  a GRASS raster map as input.  Calculates spatial shape identifi-
       cation and classification on a raster map. Be  sure  to	carefully  set
       your  resolution  (using _g_._r_e_g_i_o_n) before running this program, or else
       your computer could run out of memory.

OOPPTTIIOONNSS
   PPaarraammeetteerr::
       iinnppuutt==_n_a_m_e
	      Name of input raster map layer.

       oouuttppuutt==_n_a_m_e
	      Fourier transformation output file

       wwiiddtthh==_v_a_l_u_e
	      This parameter determines the x-y extent of the Gaussian filter.
	      The  default  value is 9;  higher and lower values can be tested
	      by the user.   Increasing  the  width  will  result  in  finding
	      "edges" representing more gradual changes in cell values.
	      Default:	9

       tthhrreesshhoolldd==_v_a_l_u_e
	      This parameter determines the "sensitivity" of the Gaussian fil-
	      ter.  The default value is 10;  higher and lower values  can  be
	      tested  by the user.  Increasing the threshold value will result
	      in fewer edges being found.
	      Default:	10

       oorriieennttaattiioonnss==_v_a_l_u_e
	      This value is the number of azimuth directions the cells on  the
	      output  raster  map  layer  are categorized into (similar to the
	      aspect raster map layer produced by the _r_._s_l_o_p_e_._a_s_p_e_c_t program).
	      For  example, a value of 16 would result in detected edges being
	      categorized into one of 16 bins depending on  the  direction  of
	      the edge at that point.
	      Default:	1

       The  current  region  definition  and  mask settings are respected when
       reading the input map.

NNOOTTEESS
       [..]

SSEEEE AALLSSOO
       _i_._f_f_t

       _i_._i_f_f_t

       _r_._m_a_p_c_a_l_c

       _g_._r_e_g_i_o_n

       _i_._t_e_x_t_u_r_e

       _i_._z_c

AAUUTTHHOORR
       Hong Chun Zhuang

       Sep.21,1992 at EC, CERL

       _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							    i.shape(1)
