pieGlyph              package:Rgraphviz              R Documentation

_A _f_u_n_c_t_i_o_n _t_o _p_l_o_t _p_i_e _g_r_a_p_h_s _a_s _a _g_l_y_p_h

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

     This function allows the user to plot a pie graph at a specified
     x/y location in a plotting region.

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

     pieGlyph(x, xpos, ypos, labels = names(x), edges = 200, radius = 0.8, density = NULL, angle = 45, col = NULL, border = NULL, lty = NULL, main = NULL, ...)

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

    xpos: The x location of the glyph

    ypos: The Y location of the glyph

       x: a vector of positive quantities. The values in 'x' are
          displayed as the areas of pie slices.

  labels: a vector of character strings giving names for the slices. 
          For empty or NA labels, no pointing line is drawn either.

   edges: the circular outline of the pie is approximated by a polygon
          with this many edges.

  radius: the pie is drawn centered in a square box whose sides range
          from -1 to 1.  If the character strings labeling the slices
          are long it may be necessary to use a smaller radius.

 density: the density of shading lines, in lines per inch. The default
          value of 'NULL' means that no shading lines are drawn.
          Non-positive values of 'density' also inhibit the drawing of
          shading lines.

   angle: the slope of shading lines, given as an angle in degrees
          (counter-clockwise).

     col: a vector of colors to be used in filling or shading the
          slices. If missing a set of 6 pastel colours is used, unless
          'density' is specified when 'par("fg")' is used.

border, lty: (possibly vectors) arguments passed to 'polygon' which
          draws each slice.

    main: an overall title for the plot.

     ...: graphical parameters can be given as arguments to 'pie'. 
          They will affect the main title and labels only.

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

     R. Gentleman

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

     'pie'

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

        plot(1:10, col="white")
        pieGlyph(1:20, 5, 5)

