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authorKarl Berry <karl@freefriends.org>2005-12-29 00:34:36 +0000
committerKarl Berry <karl@freefriends.org>2005-12-29 00:34:36 +0000
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+<html>
+<head><title>Help On LaTeX picture</title></head>
+<body bgcolor="#ffffff" text="#000000" link="#000099" vlink="#cc0000" alink="#cc0000">
+<h1><font size="-2">Hypertext Help with LaTeX</font><br><font color="#cc0000">Picture environment</font></h1>
+<p>
+<p><pre>
+ \begin{picture}(width,height)(x-offset,y-offset)
+ ...
+ picture commands
+ ...
+ \end{picture}
+</pre>
+<p>
+ The picture environment allows you to create just about any kind of
+ picture you want containing text, lines, arrows and circles. You tell
+ LaTeX where to put things in the picture by specifying their
+ coordinates. A coordinate is a number that may have a decimal point
+ and a minus sign (<tt>-</tt>), for example, 5, 2.3, or -3.1416. A coordinate
+ specifies a length in multiples of the unit length
+ <a href="unitlength.html"><tt>\unitlength</tt></a>, so if
+ <tt>\unitlength</tt> has been set to 1cm, then the coordinate 2.54 specifies a
+ length of 2.54 centimeters. You can change the value of <tt>\unitlength</tt>
+ anywhere you want, using the
+ <a href="ltx-88.html"><tt>\setlength</tt></a> command,
+ but it should be set before the beginning of the picture environment since
+ strange things may happen if you try changing it inside the picture environment.
+<p>
+ A position is a pair of coordinates, such as (2.4,-5), specifying the
+ point with x-coordinate = 2.4 and y-coordinate = -5. Coordinates are
+ specified in the usual way with respect to an origin, which is
+ normally at the lower-left corner of the picture. Note that when a
+ position appears as an argument, it is not enclosed in braces; the
+ parentheses serve to delimit the argument.
+<p>
+ The picture environment has one mandatory argument, which
+ specifies the size of the picture. The environment
+ produces a rectangular box with width and height determined by this
+ argument's two values.
+<p>
+ The picture environment also has an optional position argument,
+ following the size argument, that can change the origin. (Unlike
+ ordinary optional arguments, this argument is not contained in square
+ brackets.) The optional argument gives the coordinates of the point at
+ the lower-left corner of the picture (thereby determining the origin).
+ For example, if
+ <a href="unitlength.html"><tt>\unitlength</tt></a> has been set to 1mm,
+ the command
+<p>
+<p><pre>
+ \begin{picture}(100,200)(10,20)
+</pre>
+ produces a picture of width 100 millimeters and height 200
+ millimeters, whose lower-left corner is the point (10,20) and whose
+ upper-right corner is therefore the point (110,220).
+ Typically one initially omits the optional argument, leaving the
+ origin at the lower-left corner. If you then want to modify your
+ picture by shifting everything, you just add the appropriate optional
+ argument.
+<p>
+ The environment's mandatory argument determines the nominal size of
+ the picture. This need bear no relation to how large the picture
+ really is; LaTeX will happily allow you to put things outside the
+ picture, or even off the page. The picture's nominal size is used by
+ TeX in determining how much room to leave for it.
+<p>
+ Everything that appears in a picture is drawn by the
+ <a href="ltx-296.html"><tt>\put</tt></a> command. The
+ command
+<pre>
+ \put (11.3,-.3){obj}
+</pre>
+ puts the object specified by <tt>obj</tt> in the picture, with its reference
+ point at coordinates (11.3,-.3). The reference points for various
+ objects will be described below.
+<p>
+ The <a href="ltx-296.html"><tt>\put</tt></a>
+ command creates an LR box. You can put anything in the text
+ argument of the <tt>\put</tt> command that you'd put into the argument
+ of an <a href="ltx-265.html"><tt>\mbox</tt></a>
+ (or related) command. When you do this, the reference point
+ will be the lower left corner of the box.
+<p>
+See also
+<ul>
+<li><A href="ltx-210.html"><tt>\circle</tt></A>
+<li><A href="ltx-216.html"><tt>\dashbox</tt></A>
+<li><A href="ltx-236.html"><tt>\frame</tt></A>
+<li><A href="ltx-237.html"><tt>\framebox</tt></A>
+<li><A href="ltx-257.html"><tt>\line</tt></A>
+<li><A href="ltx-259.html"><tt>\linethickness</tt></A>
+<li><A href="ltx-262.html"><tt>\makebox</tt></A>
+<li><A href="ltx-269.html"><tt>\multiput</tt></A>
+<li><A href="ltx-286.html"><tt>\oval</tt></A>
+<li><A href="ltx-296.html"><tt>\put</tt></A>
+<li><A href="ltx-314.html"><tt>\shortstack</tt></A>
+<li><a href="unitlength.html"><tt>\unitlength</tt></a>
+<li><A href="ltx-341.html"><tt>\vector</tt></A>
+<p>
+<li><a href="ltx-86.html">Lengths</a>
+</ul>
+Return to <a href="ltx-2.html">LaTeX Table of Contents</a>
+<hr>
+<address>
+Revised: Sheldon Green, 12 May 1995.
+</address>
+</body>
+</html>