plot(3X)                                                 plot(3X)



     NAME
          plot - graphics interface subroutines

     SYNOPSIS
          int openpl()

          int erase()

          int label(s)
          char *s;

          int line(x1, y1, x2, y2)
          int x1, y1, x2, y2;

          int circle(x, y, r)
          int x, y, r;

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

          int move(x, y)
          int x, y;

          int cont(x, y)
          int x, y;

          int point(x, y)
          int x, y;

          int linemod(s)
          char *s;

          int space(x0, y0, x1, y1)
          int x0, y0, x1, y1;

          int closepl()

     DESCRIPTION
          These subroutines generate graphic output in a relatively
          device-independent manner.  space must be used before any of
          these functions to declare the amount of space necessary;
          see plot(4).  openpl must be used before any of the others
          to open the device for writing.  closepl flushes the output.

          circle draws a circle of radius r with center at the point
          (x,y).

          arc draws an arc of a circle with center at the point (x,y)
          between the points (x0,y0) and (x1,y1).

          String arguments to label and linemod are terminated by
          nulls and do not contain newlines.



     April, 1990                                                     1

     plot(3X)                                                 plot(3X)



          See plot(4) for a description of the effect of the remaining
          functions.

          The library files listed below provide several variations of
          these routines.

     FILES
          /usr/lib/libplot.a
                           produces output for tplot(1G) filters
          /usr/lib/lib300.a
                           for DASI 300
          /usr/lib/lib300s.a
                           for DASI 300s
          /usr/lib/lib450.a
                           for DASI 450
          /usr/lib/lib4014.a
                           for Tektronix 4014

     WARNINGS
          To compile a program containing these functions in file.c,
          use

             cc file.c -lplot


          To execute it, use

             a.out | tplo

          The above routines use <stdio.h>.  Therefore, the size of
          programs not otherwise using standard I/O is increased more
          than might be expected.

     SEE ALSO
          tplot(1G), plot(4).




















     2                                                     April, 1990