unmark               package:spatstat               R Documentation

_R_e_m_o_v_e _M_a_r_k_s _f_r_o_m _a _M_a_r_k_e_d _P_o_i_n_t _P_a_t_t_e_r_n

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

     Removes the mark information from a marked point pattern

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

      unmark(X)

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

       X: A point pattern. Either an object of class `"ppp"' or
          anything acceptable to `as.ppp'. 

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

     This is simply a convenience for those occasions in which we want
     to remove the marks from a marked point pattern.

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

     A point pattern (of class `"ppp"') with any mark information
     deleted.

_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:

     `ppp.object', `as.ppp'

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

       library(spatstat)
       data(lansing)
       hicks <- lansing[lansing$marks == "hickory", ]

       plot(hicks)  # still a marked point pattern, but only 1 value of marks
       plot(unmark(hicks)) # unmarked


