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



NNAAMMEE
       ii..sshhaappee	- Performs spatial shape identification and clas-
       sification 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]	 [tthhrreesshh--
       oolldd==_v_a_l_u_e] [oorriieennttaattiioonnss==_v_a_l_u_e]

DDEESSCCRRIIPPTTIIOONN
       Reads  a  GRASS	raster	map as input.  Calculates spatial
       shape identification 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 filter.	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  catego-
	      rized  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 exam-
	      ple,  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)
