PLOT(4)                  DOMAIN/IX SYS5                   PLOT(4)



NAME
     plot - graphics interface

DESCRIPTION
     Files of this format are produced by routines described in
     plot(3X), and are interpreted for various devices by com-
     mands described in plot(1G).  A graphics file is a stream of
     plotting instructions.  Each instruction consists of an
     ASCII letter usually followed by bytes of binary informa-
     tion.  The instructions are executed in order.  A point is
     designated by four bytes representing the x and y values;
     each value is a signed integer.  The last designated point
     in an l, m, n, or p instruction becomes the "current point"
     for the next instruction.

     Each of the following descriptions begins with the name of
     the corresponding routine in plot(3X).

     m    move: The next four bytes give a new current point.

     n    cont: Draw a line from the current point to the point
          given by the next four bytes.  See plot(1G).

     p    point: Plot the point given by the next four bytes.

     l    line: Draw a line from the point given by the next four
          bytes to the point given by the following four bytes.

     t    label: Place the following ASCII string so that its
          first character falls on the current point.  The string
          is terminated by a newline.

     a    arc: The first four bytes give the center, the next
          four give the starting point, and the last four give
          the end point of a circular arc.  The least significant
          coordinate of the end point is used only to determine
          the quadrant.  The arc is drawn counter-clockwise.

     c    circle: The first four bytes give the center of the
          circle, the next two the radius.

     e    erase: Start another frame of output.

     f    linemod: Take the following string, up to a newline, as
          the style for drawing further lines.  The styles are
          "dotted," "solid," "longdashed," "shortdashed," and
          "dotdashed." Effective only in plot 4014 and plot ver.

     s    space: The next four bytes give the lower left corner
          of the plotting area; the following four give the upper



Printed 12/4/86                                            PLOT-1

PLOT(4)                  DOMAIN/IX SYS5                   PLOT(4)



          right corner.  The plot will be magnified or reduced to
          fit the device as closely as possible.

          Space settings that exactly fill the plotting area with
          unity scaling appear below for devices supported by the
          filters of plot(1G).  The upper limit is just outside
          the plotting area.  In every case the plotting area is
          taken to be square; points outside may be displayable
          on devices whose face isn't square.

RELATED INFORMATION
     plot(1G), plot(3X), graph(1G)









































PLOT-2                                            Printed 12/4/86