PLOT(3X-BSD)        RISC/os Reference Manual         PLOT(3X-BSD)



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-independent manner.  See plot(5) for a description of
     their effect.  openpl must be used before any of the others
     to open the device for writing.  closepl flushes the output.

     String arguments to label and linemod are null-terminated,
     and do not contain newlines.

     Various flavors of these functions exist for different out-
     put devices. They are obtained by the following ld(1)
     options:

     -lplot  device-independent graphics stream on standard out-
             put for plot(1G) filters

     -l300   GSI 300 terminal

     -l300s  GSI 300S terminal

     -l450   GSI 450 terminal



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PLOT(3X-BSD)        RISC/os Reference Manual         PLOT(3X-BSD)



     -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

     -lplotgigi
             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 erase(),
     otherwise plotting commands are lost.  The pause is normally
     done by the tty driver if, at login time, tset found a df
     field in the termcap(5) entry for the terminal.

     If a pause is needed but not automatically being generated,
     add

          flush(stdout);
          sleep(1);

     after each erase().

SEE ALSO
     plot(3F), plot(5).
     plot(1G), graph(1G) in the User's Reference Manual.








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