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<div><h1 id="a0000000002">1 Introduction to PyXPlot</h1>
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<ul>
<li><a href="ch-introduction.html">1 Introduction</a>
   <ul>
   <li><a href="sect0002.html">1.1 What is Pyxplot?</a>
       
   </li><li><a href="sect0003.html">1.2 Compatibility with gnuplot</a>
       
   </li><li><a href="sect0004.html">1.3 The structure of this manual</a>
       
   </li><li><a href="sect0005.html">1.4 An introductory tour</a>
       
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   <li><a href="sect0009.html">2.1 Installation within Linux distributions</a>
       
   </li><li><a href="sect0010.html">2.2 System requirements</a>
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       <li><a href="sect0011.html">2.2.1 Dependencies in Debian and Ubuntu</a>
           
       </li><li><a href="sect0012.html">2.2.2 Dependencies in MacOS</a>
           
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       <li><a href="sect0014.html">2.3.1 System-wide installation</a>
           
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   <li><a href="box-CommandHistory.html">3.1 Getting started</a>
       
   </li><li><a href="sec-first_plots.html">3.2 First plots</a>
       
   </li><li><a href="sect0015.html">3.3 Comments</a>
       
   </li><li><a href="sect0016.html">3.4 Splitting long commands</a>
       
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       <li><a href="sect0017.html">3.6.1 Removing labels and titles</a>
           
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   </li><li><a href="sect0018.html">3.7 Querying the values of settings</a>
       
   </li><li><a href="sec-plot_datafiles.html">3.8 Plotting data files</a>
       
   </li><li><a href="sect0019.html">3.9 Plotting many data files at once</a>
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       <li><a href="sec-horizontal_datafiles.html">3.9.1 Horizontally arranged data files</a>
           
       </li><li><a href="sec-select_modifier.html">3.9.2 Choosing which data to plot</a>
           
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   </li><li><a href="sec-replot.html">3.10 The <tt class="tt">replot</tt> command</a>
       
   </li><li><a href="sec-directing_output.html">3.11 Directing where output goes</a>
       
   </li><li><a href="sect0020.html">3.12 Setting the size of output</a>
       
   </li><li><a href="sec-pointtype.html">3.13 Plotting styles</a>
       
   </li><li><a href="ex-axislab.html">3.14 Setting axis ranges</a>
       
   </li><li><a href="sect0021.html">3.15 Interactive help</a>
       
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</li><li><a href="sect0022.html">4 Performing calculations</a>
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   <li><a href="sect0023.html">4.1 Variables</a>
       
   </li><li><a href="sec-constants.html">4.2 Physical constants</a>
       
   </li><li><a href="sec-functions.html">4.3 Functions</a>
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       <li><a href="ex-funcsplice.html">4.3.1 Spliced functions</a>
           
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   </li><li><a href="sec-num_errs.html">4.4 Handling numerical errors</a>
       
   </li><li><a href="sec-complex_numbers.html">4.5 Working with complex numbers</a>
       
   </li><li><a href="sec-units.html">4.6 Working with physical units</a>
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       <li><a href="sec-angles.html">4.6.1 Treatment of angles in Pyxplot</a>
           
       </li><li><a href="sect0024.html">4.6.2 Converting between different temperature scales</a>
           
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       <li><a href="sect0025.html">4.7.1 Display of physical units</a>
           
       </li><li><a href="sect0026.html">4.7.2 Changing the accuracy to which numbers are displayed</a>
           
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   </li><li><a href="sect0027.html">4.9 Solving systems of equations</a>
       
   </li><li><a href="ex-eqnsolve.html">4.10 Searching for minima and maxima of functions</a>
       
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       <li><a href="sect0028.html">4.11.1 Calendars</a>
           
       </li><li><a href="sect0029.html">4.11.2 Time intervals</a>
           
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   <li><a href="sec-filters.html">5.1 Input filters</a>
       
   </li><li><a href="sect0030.html">5.2 Reading data from a pipe</a>
       
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       <li><a href="sect0032.html">5.7.1 Two-dimensional interpolation</a>
           
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       <li><a href="sect0034.html">5.8.1 Window functions</a>
           
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   </li><li><a href="sect0035.html">5.10 Random data generation</a>
       
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       </li><li><a href="sect0038.html">6.2.3 Slicing strings</a>
           
       </li><li><a href="sect0039.html">6.2.4 String methods</a>
           
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       <li><a href="sect0042.html">6.3.1 Using lists as stacks</a>
           
       </li><li><a href="sect0043.html">6.3.2 Using lists as buffers</a>
           
       </li><li><a href="sect0044.html">6.3.3 Sorting lists</a>
           
       </li><li><a href="sect0045.html">6.3.4 Iterating over lists</a>
           
       </li><li><a href="sect0046.html">6.3.5 Calling functions with lists of arguments</a>
           
       </li><li><a href="sec-listfilter.html">6.3.6 List mapping and filtering</a>
           
       </li><li><a href="sect0047.html">6.3.7 Vectors versus lists</a>
           
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   </li><li><a href="sect0048.html">6.4 Dictionaries</a>
       
   </li><li><a href="sec-vectors.html">6.5 Vectors and matrices</a>
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       <li><a href="sect0049.html">6.5.1 Dot and cross products</a>
           
       </li><li><a href="sect0050.html">6.5.2 Matrix algebra</a>
           
       </li><li><a href="sec-vectorplot.html">6.5.3 Plotting data from vectors</a>
           
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   </li><li><a href="sec-colorObjects.html">6.6 Colors</a>
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       <li><a href="sect0051.html">6.6.1 Color representations of the electromagnetic spectrum</a>
           
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   </li><li><a href="sect0052.html">6.7 Dates</a>
       
   </li><li><a href="sect0053.html">6.8 Modules and classes</a>
       
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       <li><a href="sect0055.html">6.9.1 Storing data structures in text files</a>
           
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