world                 package:fields                 R Documentation

_P_l_o_t _o_f _t_h_e _w_o_r_l_d

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

     Plots quickly, medium resolution outlines of large land masses and
      bodies of water.

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

     world(ylim = c(-90, 90), xlim = NULL, add = FALSE, asp = 1,
                      xlab = "", ylab = "", xaxt = "n", yaxt = "n", eps =
                      0.1, shift = FALSE, ...)

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

    ylim: range of latitudes

    xlim: range of longitudes

     add: logical; if true will add the world map to current plot.

     asp: aspect ratio used if 'add' is false, see 'plot.default'.

xlab,ylab: labels for x- and y-axis; empty by default.

xaxt,yaxt: axis type for x- and y-axis; empty by default.

     eps: Tolerance to decide when to insert line break about 0 if map
          is to be shifted. (leave this at .1) 

   shift: If TRUE shifts to be centered on the Dateline and  longitude
          runs from 0 to 360. If FALSE centers on Prime Meridian and 
          longitude runs  from -180 to 180.

     ...: These are graphical arguments that are passed to the 'lines'
          (and 'plot' if 'add' is false) function that draws the
          outline.

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

     This function uses the FIELDS dataset world.dat for the
     coordinates. The  main advantage of this function is that it is
     fast and easy to modify.  The shift option to center over the
     dateline is useful because often  plots of ocean and atmosphere
     information center the map this way.

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

     US

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

     # Draw map in device color number 2 ( usually red?) 

     world( col=2)
     # add the US
     US( add=TRUE)

     ## Western Europe (*which* big island is missing ?)
     ## with a (light color!) coordinate grid:

     world(xlim=c(-10,18),ylim=c(36,60), xaxt = "s", yaxt = "s")
     grid()

