PLOT(5)                              BSD                               PLOT(5)



NAME
     plot - graphics interface

DESCRIPTION
     Files of this format are produced by routines described in plot(3X) and
     plot(3F), and are interpreted for various devices by commands 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 information.  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, a, or p
     instruction becomes the `current point' for the next instruction.  The a
     and c instructions change the current point in a manner dependent upon
     the specific device.

     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.

     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 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.

        4013      space(0, 0, 780, 780);
        4014      space(0, 0, 3120, 3120);
        ver       space(0, 0, 2048, 2048);
        300, 300s space(0, 0, 4096, 4096);
        450       space(0, 0, 4096, 4096);

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