4.4BSD/usr/share/man/cat5/plot.0

PLOT(5)              BSD Programmer's Manual              PLOT(5)


NNAAMMEE
       plot - graphics interface

DDEESSCCRRIIPPTTIIOONN
       Files of this format are produced by routines described in
       _p_l_o_t(3X) and _p_l_o_t(3F), and  are  interpreted  for  various
       devices  by  commands  described  in _p_l_o_t(1G).  A graphics
       file is a stream of plotting instructions.  Each  instruc-
       tion 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 ll,, mm,, nn,, aa,, or pp instruction
       becomes the `current point' for the next instruction.  The
       aa  and cc 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 _p_l_o_t(3X).

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

       nn  cont:  Draw  a line from the current point to the point
          given by the next four bytes.

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

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

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

       aa  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.

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

       ee  erase: Start another frame of output.

       ff  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 _p_l_o_t _4_0_1_4 and _p_l_o_t _v_e_r_.

       ss  space: The next four bytes give the lower  left  corner



7th Edition               April 29, 1991                        1








PLOT(5)              BSD Programmer's Manual              PLOT(5)


          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  _p_l_o_t(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);

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

BBUUGGSS
       A  _l_a_b_e_l  instruction  immediately  followed  by  a   _c_o_n_t
       instruction does the wrong thing on a 4014.































7th Edition               April 29, 1991                        2