rSSI                package:spatstat                R Documentation

_S_i_m_p_l_e _S_e_q_u_e_n_t_i_a_l _I_n_h_i_b_i_t_i_o_n

_D_e_s_c_r_i_p_t_i_o_n:

     Generate a random point pattern using the Simple Sequential
     Inhibition (SSI) process.

_U_s_a_g_e:

      rSSI(r, n, win = owin(c(0,1),c(0,1)), giveup = 1000)

_A_r_g_u_m_e_n_t_s:

       r: Inhibition distance. 

       n: Number of points to generate. 

     win: Window in which to simulate the pattern. An object of class
          `"owin"' or something acceptable to `as.owin'. 

  giveup: Number of rejected proposals after which the algorithm should
          terminate. 

_D_e_t_a_i_l_s:

     This algorithm generates a realisation of the Simple Sequential
     Inhibition point process  inside the window `win'.

     Starting with an empty window, the algorithm adds points
     one-by-one. Each new point is generated uniformly in the window
     and independently of preceding points. If the new point lies
     closer than `r' units from an existing point, then it is rejected
     and another random point is generated.

     The algorithm terminates either when the desired number `n' of
     points is reached, or when the current point configuration has not
     changed for `giveup' iterations.

_V_a_l_u_e:

     The simulated point pattern (an object of class `"ppp"').

_A_u_t_h_o_r(_s):

     Adrian Baddeley adrian@maths.uwa.edu.au <URL:
     http://www.maths.uwa.edu.au/~adrian/> and Rolf Turner
     rolf@math.unb.ca <URL: http://www.math.unb.ca/~rolf>

_S_e_e _A_l_s_o:

     `rpoispp', `rMaternI', `rMaternII'

_E_x_a_m_p_l_e_s:

      library(spatstat)
      pp <- rSSI(0.05, 200)
      plot(pp)

