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<div><h1 id="ch:reference">1 Command reference</h1>
<p>This chapter contains an alphabetically ordered list of all of Pyxplot’s commands. The syntax of each is specified in a variant of Backus-Naur notation, in which angle brackets <tt class="tt">&lt;&gt;</tt> are used to indicate replaceable tokens, parentheses <tt class="tt">()</tt> are used to indicate mutually-exclusive options which are separated by vertical lines <tt class="tt">|</tt>, square brackets <tt class="tt">[]</tt> are used to indicate optional items, and braces <tt class="tt">{}</tt> are used to indicate items which may be repeated. Dots <tt class="tt">...</tt> are used to indicate arbitrary strings of text. </p><p>Replaceable tokens labelled <tt class="tt">&lt;length&gt;</tt> may be specified either as a number with physical dimensions of length, e.g. <tt class="tt">2*unit(m)</tt>, or as a dimensionless number taken as a number of centimeters. Replaceable tokens labelled <tt class="tt">&lt;angle&gt;</tt> may be specified either with physical dimensions of angle, e.g. <tt class="tt">0.25*unit(rev)</tt>, or as a dimensionless number of degrees, e.g. <tt class="tt">90</tt>. </p><p>Replaceable tokens labelled <tt class="tt">&lt;vector&gt;</tt> represent a physical position on the vector-graphics canvas, and can be specified either as two comma-separated co-ordinates, or as a two-component vector. In either case, the co-ordinates may either have physical demensions of length, or be a dimensionless number of centimeters. </p><p>Replaceable tokens labelled <tt class="tt">&lt;graph_vector&gt;</tt> are similar, but represent a position on a graph. They may be specified either as comma-separated co-ordinates, or as a vector object. In either case, there may be either two or three components, although the third component will be ignored except on three-dimensional plots. The components should share the physical units of the axes they are plotted against. </p><p>In flow control commands, tokens labelled <tt class="tt">&lt;code&gt;</tt> should be replaced by a series of Pyxplot commands enclosed by braces <tt class="tt">{}</tt>. The closing brace must be placed on a new line. </p><p>Where braces <tt class="tt">{}</tt> are used to indicate items which may be repeated, commas or semicolons are often used to separate items. This is specified in the text below the syntax specification. </p><p>Where keywords differ between US and British English, both variants are accepted. For example, <tt class="tt">color</tt> may be spelt <tt class="tt">colour</tt>, <tt class="tt">gray</tt> may be spelt <tt class="tt">grey</tt>, etc. </p></div>

<div class="contents chapter-contents"><!--<strong>Subsections</strong>-->
<ul>
<li><a href="sect0090.html">1.1 ?</a>
   
</li><li><a href="sect0091.html">1.2 !</a>
   
</li><li><a href="sect0092.html">1.3 arc</a>
   
</li><li><a href="sect0093.html">1.4 arrow</a>
   
</li><li><a href="sect0094.html">1.5 assert</a>
   
</li><li><a href="sect0095.html">1.6 box</a>
   
</li><li><a href="sect0096.html">1.7 break</a>
   
</li><li><a href="sect0097.html">1.8 call</a>
   
</li><li><a href="sect0098.html">1.9 cd</a>
   
</li><li><a href="sect0099.html">1.10 circle</a>
   
</li><li><a href="sect0100.html">1.11 clear</a>
   
</li><li><a href="sect0101.html">1.12 continue</a>
   
</li><li><a href="sect0102.html">1.13 delete</a>
   
</li><li><a href="sect0103.html">1.14 do</a>
   
</li><li><a href="sect0104.html">1.15 ellipse</a>
   
</li><li><a href="sect0105.html">1.16 else</a>
   
</li><li><a href="sect0106.html">1.17 eps</a>
   
</li><li><a href="sect0107.html">1.18 exec</a>
   
</li><li><a href="sect0108.html">1.19 exit</a>
   
</li><li><a href="sect0109.html">1.20 fft</a>
   
</li><li><a href="sect0110.html">1.21 fit</a>
   
</li><li><a href="sect0111.html">1.22 for</a>
   
</li><li><a href="sect0112.html">1.23 foreach</a>
   
</li><li><a href="sect0113.html">1.24 foreach datum</a>
   
</li><li><a href="sect0114.html">1.25 global</a>
   
</li><li><a href="sect0115.html">1.26 help</a>
   
</li><li><a href="sect0116.html">1.27 histogram</a>
   
</li><li><a href="sect0117.html">1.28 history</a>
   
</li><li><a href="sect0118.html">1.29 if</a>
   
</li><li><a href="sect0119.html">1.30 ifft</a>
   
</li><li><a href="sect0120.html">1.31 image</a>
   
</li><li><a href="sect0121.html">1.32 interpolate</a>
   
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</li><li><a href="sect0123.html">1.34 let</a>
   
</li><li><a href="sect0124.html">1.35 list</a>
   
</li><li><a href="sect0125.html">1.36 load</a>
   
</li><li><a href="sect0126.html">1.37 local</a>
   
</li><li><a href="sect0127.html">1.38 maximize</a>
   
</li><li><a href="sect0128.html">1.39 minimize</a>
   
</li><li><a href="sect0129.html">1.40 move</a>
   
</li><li><a href="sect0130.html">1.41 piechart</a>
   
</li><li><a href="sect0131.html">1.42 plot</a>
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   <li><a href="sect0132.html">1.42.1 axes</a>
       
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</li><li><a href="sect0136.html">1.43 point</a>
   
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</li><li><a href="sect0140.html">1.47 rectangle</a>
   
</li><li><a href="sect0141.html">1.48 refresh</a>
   
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</li><li><a href="sect0144.html">1.51 save</a>
   
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   </li><li><a href="sect0201.html">1.52.56 palette</a>
       
   </li><li><a href="sect0202.html">1.52.57 papersize</a>
       
   </li><li><a href="sect0203.html">1.52.58 pointlinewidth</a>
       
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   </li><li><a href="sect0205.html">1.52.60 preamble</a>
       
   </li><li><a href="sect0206.html">1.52.61 samples</a>
       
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   </li><li><a href="sect0208.html">1.52.63 size</a>
       
   </li><li><a href="sect0209.html">1.52.64 style</a>
       
   </li><li><a href="sect0210.html">1.52.65 style data | style function</a>
       
   </li><li><a href="sect0211.html">1.52.66 terminal</a>
       
   </li><li><a href="sect0212.html">1.52.67 textcolor</a>
       
   </li><li><a href="sect0213.html">1.52.68 texthalign</a>
       
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   </li><li><a href="sect0216.html">1.52.71 title</a>
       
   </li><li><a href="sect0217.html">1.52.72 trange</a>
       
   </li><li><a href="sect0218.html">1.52.73 unit</a>
       
   </li><li><a href="sect0219.html">1.52.74 urange</a>
       
   </li><li><a href="sect0220.html">1.52.75 view</a>
       
   </li><li><a href="sect0221.html">1.52.76 viewer</a>
       
   </li><li><a href="sect0222.html">1.52.77 vrange</a>
       
   </li><li><a href="sect0223.html">1.52.78 width</a>
       
   </li><li><a href="sect0224.html">1.52.79 xformat</a>
       
   </li><li><a href="sect0225.html">1.52.80 xlabel</a>
       
   </li><li><a href="sect0226.html">1.52.81 xrange</a>
       
   </li><li><a href="sect0227.html">1.52.82 xtics</a>
       
   </li><li><a href="sect0228.html">1.52.83 yformat</a>
       
   </li><li><a href="sect0229.html">1.52.84 ylabel</a>
       
   </li><li><a href="sect0230.html">1.52.85 yrange</a>
       
   </li><li><a href="sect0231.html">1.52.86 ytics</a>
       
   </li><li><a href="sect0232.html">1.52.87 zformat</a>
       
   </li><li><a href="sect0233.html">1.52.88 zlabel</a>
       
   </li><li><a href="sect0234.html">1.52.89 zrange</a>
       
   </li><li><a href="sect0235.html">1.52.90 ztics</a>
       
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   </ul>
</li><li><a href="sect0236.html">1.53 show</a>
   
</li><li><a href="sect0237.html">1.54 solve</a>
   
</li><li><a href="sect0238.html">1.55 spline</a>
   
</li><li><a href="sect0239.html">1.56 swap</a>
   
</li><li><a href="sect0240.html">1.57 tabulate</a>
   
</li><li><a href="sect0241.html">1.58 text</a>
   
</li><li><a href="sect0242.html">1.59 undelete</a>
   
</li><li><a href="sect0243.html">1.60 unset</a>
   
</li><li><a href="sect0244.html">1.61 while</a>
   
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