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BSD 2.11 - man page for plot (bsd section 5)

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PLOT(5) 										  PLOT(5)

       plot - graphics interface

       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 inte-
       ger.  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

       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  cur-
	  rent 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-

       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 follow-
	  ing 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);

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

7th Edition				   May 15, 1985 				  PLOT(5)
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