s.hull(1)		      Grass User's Manual		     s.hull(1)



NNAAMMEE
       ss..hhuullll  - Uses a GRASS sites list to produce a convex hull vector map

       _(_G_R_A_S_S _S_i_t_e_s _P_r_o_g_r_a_m_)

SSYYNNOOPPSSIISS
       ss..hhuullll [--aass] ssiitteess==_n_a_m_e vveecctt==_n_a_m_e

DDEESSCCRRIIPPTTIIOONN
       s.hull  computes  the  convex  hull of a sites list and outputs it in a
       binary vector file (vect).



OOPPTTIIOONNSS
   FFllaaggss::
       --aa     Use all sites found in the named sites file, rather than	limit-
	      ing  output  to  sites  falling  within  the  current geographic
	      region.

       --ss     Automatically run "v.support" on newly created vector file.


   PPaarraammeetteerrss::
       ssiitteess==_n_a_m_e
	      Name of existing sites file.

       vveecctt==_n_a_m_e
	      Name of the output file (binary vector file).


       s.hull can be run either non-interactively or interactively.  The  pro-
       gram will be run non-interactively if the user specifies the name of an
       existing site list file and a name for a vect file, using the form
		  s.hull [-a] sites=name1 vect=name2
	where  name1 is the name of an existing site list file	and  name2  is
       the name of vector output file.


       Alternately,  the  user	can  simply	type   s.hull	on   the  com-
       mand   line,  without program arguments.  In this case, the  user  will
       be    prompted	 for   parameter   values    using    the   standard
       GRASS	parser	  interface described in the manual entry for  parser.
       In either case,	v.support should  be  run on the output (the "-s" flag
       can be used for that).

EEXXAAMMPPLLEESS
RREEFFEERREENNCCEESS
       _M_. _d_e _B_e_r_g_, _M_. _v_a_n _K_r_e_v_e_l_d_, _M_. _O_v_e_r_m_a_r_s_, _O_. _S_c_h_w_a_r_z_k_o_p_f_,  _(_2_0_0_0_)_.  _C_o_m_-
       _p_u_t_a_t_i_o_n_a_l _g_e_o_m_e_t_r_y_, _c_h_a_p_t_e_r _1_._1_, _2_-_8_.

SSEEEE AALLSSOO
	_v_._s_u_p_p_o_r_t

AAUUTTHHOORR
       Andrea Aime, Modena, Italy

       _L_a_s_t _c_h_a_n_g_e_d_: _$_D_a_t_e_: _2_0_0_2_/_0_1_/_2_5 _0_5_:_4_5_:_3_5 _$



GRASS 5.0							     s.hull(1)
