4.4BSD/usr/share/man/cat3/erase.0

PLOT(3)              BSD Programmer's Manual              PLOT(3)


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

SSYYNNOOPPSSIISS
       ooppeennppll(())

       eerraassee(())

       llaabbeell((ss))
       cchhaarr ss[[]];;

       lliinnee((xx11,, yy11,, xx22,, yy22))

       cciirrccllee((xx,, yy,, rr))

       aarrcc((xx,, yy,, xx00,, yy00,, xx11,, yy11))

       mmoovvee((xx,, yy))

       ccoonntt((xx,, yy))

       ppooiinntt((xx,, yy))

       lliinneemmoodd((ss))
       cchhaarr ss[[]];;

       ssppaaccee((xx00,, yy00,, xx11,, yy11))

       cclloosseeppll(())


DDEESSCCRRIIPPTTIIOONN
       These subroutines generate graphic output in a  relatively
       device-independent  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:

       --llpplloott  device-independent  graphics  stream  on  standard
               output for _p_l_o_t(1) filters
       --ll330000   GSI 300 terminal
       --ll330000ss  GSI 300S terminal
       --ll445500   GSI 450 terminal



7th Edition                June 4, 1993                         1








PLOT(3)              BSD Programmer's Manual              PLOT(3)


       --ll44001133  Tektronix 4013 terminal
       --ll44001144  Tektronix  4014  and  4015  terminals   with   the
               Enhanced Graphics Module (Use --ll44001133 for 4014's or
               4015's without the Enhanced Graphics Module)
       --llpplloottaaeedd
               AED 512 color graphics terminal
       --llpplloottbbgg
               BBN bitgraph graphics terminal
       --llpplloottdduummbb
               Dumb terminals without cursor addressing  or  line
               printers
       --llpplloottggiiggii
               DEC Gigi terminals
       --llvvtt00   DEC vt100 terminals
       --llpplloott22664488
               Hewlett Packard 2648 graphics terminal
       --llpplloott77222211
               Hewlett Packard 7221 graphics terminal
       --llpplloottiimmaaggeenn
               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 nor-
       mally 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().

SSEEEE AALLSSOO
       plot(5), plot(1G), plot(3F), graph(1G)





















7th Edition                June 4, 1993                         2