point                package:sgeostat                R Documentation

_P_o_i_n_t _O_b_j_e_c_t

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

     Create an object of class point from a data frame.

     An object of class point represents the observed data of a spatial
     process. This includes the spatial location of sampling sites and
     the values observed at those sites. A point object is stored as a
     data frame. The data frame must contain one column for the X
     coordinate and one column for the Y coordinate of each point, as
     well as any number of columns representing data observed at the
     points.

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

     point(dframe, x='x', y='y') 

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

  dframe: a data frame containing the x and y coordinates for each
          point and the variables observed at each point

       x: the name of the column in `dframe' that contains the x
          coordinate

       y: the name of the column in `dframe' that contains the y
          coordinate

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

     A point object: 

       x: vector of x coordinates

       y: vector of ycoordinates

    var1: vector of the first variable

     ...: ...

    varm: vector of the mth variable

_R_e_f_e_r_e_n_c_e_s:

     http://www.gis.iastate.edu/SGeoStat/homepage.html

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

     `point'

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

     data(maas)
     maas.point <- point(maas) 

