PLOT(3X)                                                              PLOT(3X)



NAME
       plot:  openpl,  erase,  label,  line,  circle,  arc, move, cont, point,
       linemod, space, closepl - graphics interface

SYNOPSIS
       openpl()

       erase()

       label(s)
       char s[];

       line(x1, y1, x2, y2)

       circle(x, y, r)

       arc(x, y, x0, y0, x1, y1)

       move(x, y)

       cont(x, y)

       point(x, y)

       linemod(s)
       char s[];

       space(x0, y0, x1, y1)

       closepl()


DESCRIPTION
       These subroutines generate graphic output in a relatively  device-inde‐
       pendent manner.  See _p_l_o_t(5) for a description of their effect.  _O_p_e_n_p_l
       must be used before any of the others to open the device  for  writing.
       _C_l_o_s_e_p_l flushes the output.

       String  arguments  to _l_a_b_e_l and _l_i_n_e_m_o_d are null-terminated, and do not
       contain newlines.

       Various flavors of these functions exist for different output  devices.
       They are obtained by the following _l_d(1) options:

       -lplot  device-independent  graphics  stream  on  standard  output  for
               _p_l_o_t(1) filters
       -l300   GSI 300 terminal
       -l300s  GSI 300S terminal
       -l450   GSI 450 terminal
       -l4013  Tektronix 4013 terminal
       -l4014  Tektronix 4014 and 4015 terminals with  the  Enhanced  Graphics
               Module  (Use  -l4013  for 4014’s or 4015’s without the Enhanced
               Graphics Module)
       -lplotaed
               AED 512 color graphics terminal
       -lplotbg
               BBN bitgraph graphics terminal
       -lplotdumb
               Dumb terminals without cursor addressing or line printers
       -lplot  DEC Gigi terminals
       -lvt0   DEC vt100 terminals
       -lplot2648
               Hewlett Packard 2648 graphics terminal
       -lplot7221
               Hewlett Packard 7221 graphics terminal
       -lplotimagen
               Imagen laser printer (default 240 dots-per-inch resolution).

       On many devices, it is necessary  to  pause  after  _e_r_a_s_e(),  otherwise
       plotting  commands  are  lost.   The  pause is normally done by the tty
       driver if at login time, _t_s_e_t found a _d_f field in the _t_e_r_m_c_a_p(5)  entry
       for  the  terminal.   If  a pause is needed but not automatically being
       generated, add
              flush(stdout);
              sleep(1);
       after each _e_r_a_s_e().

SEE ALSO
       plot(5), plot(1G), plot(3F), graph(1G)



7th Edition                      May 15, 1986                         PLOT(3X)