

_D_r_a_w _a _R_e_c_t_a_n_g_l_e

     rect(xleft, ybottom, xright, ytop,
          col=NULL, border=par("fg"), lty=NULL, xpd=FALSE)

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

   xleft: a vector (or scalar) of left x positions.

 ybottom: a vector (or scalar) of bottom y positions.

  xright: a vector (or scalar) of right x positions.

    ytop: a vector (or scalar) of top y positions.

     col: color(s) to fill the rectangle(s) with.

  border: color for rectangle border(s).

     lty: line type for borders; defaults to `"solid"'.

     xpd: logical (``expand''); if `FLASE', everything is
          clipped to the plot region.

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

     `rect' draws a rectangle (or sequence of rectangles)
     with the given coordinates.  It is a primitive function
     used in `hist'.  The value supplied, i.e., `xleft,
     ...', are relative to the current plotting region. If
     the x-axis goes from 100 to 200 then `xleft' must be
     larger than 100 and `xright' must be less than 200.

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

     `box' for the ``standard'' box around the plot;
     `polygon' and `segments' for flexible line drawing.

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

     ## set up the plot region:
     plot(c(100, 250), c(300, 450), type = "n",
          main = "11 rectangles using `rect(120+i,300+i,  177+i,380+i)'")
     i <- 4*(0:10)
     ## draw rectangles with bottom left (120, 300)+i  and top right (177, 380)+i
     rect(120+i, 300+i, 177+i, 380+i, col=rainbow(11, start=.7,end=.1))

