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  out-
       puts it in a binary vector file (vect).



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

       --ss     Automatically run "v.support" on newly created vec-
	      tor 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  interac-
       tively.	 The program 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
       command	 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)
