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dymax.html
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<!DOCTYPE html>
<html>
<head>
<title>Protovis - Dymaxion Map</title>
<link type="text/css" rel="stylesheet" href="../style.css?3.2"/>
<link type="text/css" rel="stylesheet" href="syntax.css"/>
<script type="text/javascript" src="../protovis-r3.2.js"></script>
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<div class="title">
<div class="subtitle">
A graphical toolkit for visualization
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<a href="../">Protovis</a>
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<div class="section">
<a href="../">Overview</a>
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<a href="./">Examples</a>
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<a href="../docs/">Documentation</a>
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<a href="https://github.com/mbostock/protovis/zipball/v3.3.1">Download</a>
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<h1>Dymaxion Map</h1>
<iframe scrolling="no" style="height:400px;" src="dymax-full.html"></iframe>
<p><img src="popout.png" width="16" height="16"
style="padding:0;vertical-align:top;"> <a style="font-size:13px;"
href="dymax-full.html" target="_blank">View full screen.</a>
<p>The <a href="http://en.wikipedia.org/wiki/Dymaxion_map">Dymaxion
map</a>, designed by <a
href="http://en.wikipedia.org/wiki/Buckminster_Fuller">Buckminster
Fuller</a>, projects the world onto the surface of an icosahedron. This
polyhedron is then unfolded to form a two-dimension image with less
distortion than <a href="projection.html">conventional projections</a>.
Unusually, the icosahedron can be oriented and unfolded in different ways
to maintain contiguity in different regions (e.g., land masses or oceans).
<p>The Dymaxion projection implementation is based on work by <a
href="http://www.rwgrayprojects.com/rbfnotes/maps/graymap6.html">Robert
W. Gray</a> and may not be used in any for-profit project without his
written permission.
<blockquote style="font-size:13px;">
Next: <a href="qqplot.html">Q-Q Plots</a>
</blockquote>
<h3>Source</h3>
<div class="highlight"><pre><span class="nt"><html></span>
<span class="nt"><head></span>
<span class="nt"><title></span>Dymaxion map<span class="nt"></title></span>
<span class="nt"><link</span> <span class="na">type=</span><span class="s">"text/css"</span> <span class="na">rel=</span><span class="s">"stylesheet"</span> <span class="na">href=</span><span class="s">"ex.css?3.2"</span><span class="nt">/></span>
<span class="nt"><script </span><span class="na">type=</span><span class="s">"text/javascript"</span> <span class="na">src=</span><span class="s">"../protovis-r3.2.js"</span><span class="nt">></script></span>
<span class="nt"><script </span><span class="na">type=</span><span class="s">"text/javascript"</span> <span class="na">src=</span><span class="s">"dymax.js"</span><span class="nt">></script></span>
<span class="nt"><script </span><span class="na">type=</span><span class="s">"text/javascript"</span> <span class="na">src=</span><span class="s">"countries.js"</span><span class="nt">></script></span>
<span class="nt"><style </span><span class="na">type=</span><span class="s">"text/css"</span><span class="nt">></span>
<span class="nf">#fig</span> <span class="p">{</span>
<span class="k">width</span><span class="o">:</span> <span class="m">860px</span><span class="p">;</span>
<span class="k">height</span><span class="o">:</span> <span class="m">400px</span><span class="p">;</span>
<span class="p">}</span>
<span class="nt"></style></span>
<span class="nt"></head></span>
<span class="nt"><body><div</span> <span class="na">id=</span><span class="s">"center"</span><span class="nt">><div</span> <span class="na">id=</span><span class="s">"fig"</span><span class="nt">></span>
<span class="nt"><script </span><span class="na">type=</span><span class="s">"text/javascript+protovis"</span><span class="nt">></span>
<span class="kd">var</span> <span class="nx">xMap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">lon</span><span class="p">,</span> <span class="nx">lat</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="nx">convert_s_t_p_cache</span><span class="p">(</span><span class="nx">lon</span><span class="p">,</span> <span class="nx">lat</span><span class="p">).</span><span class="nx">x</span> <span class="o">*</span> <span class="mi">150</span><span class="p">;</span>
<span class="p">};</span>
<span class="kd">var</span> <span class="nx">yMap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">lon</span><span class="p">,</span> <span class="nx">lat</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="nx">convert_s_t_p_cache</span><span class="p">(</span><span class="nx">lon</span><span class="p">,</span> <span class="nx">lat</span><span class="p">).</span><span class="nx">y</span> <span class="o">*</span> <span class="mi">150</span><span class="p">;</span>
<span class="p">};</span>
<span class="kd">var</span> <span class="nx">xMapI</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">i</span><span class="p">,</span> <span class="nx">t</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="nx">convert_i_t_p</span><span class="p">(</span><span class="nx">i</span><span class="p">,</span> <span class="nx">t</span><span class="p">).</span><span class="nx">x</span> <span class="o">*</span> <span class="mi">150</span><span class="p">;</span>
<span class="p">};</span>
<span class="kd">var</span> <span class="nx">yMapI</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">i</span><span class="p">,</span> <span class="nx">t</span><span class="p">)</span> <span class="p">{</span>
<span class="k">return</span> <span class="nx">convert_i_t_p</span><span class="p">(</span><span class="nx">i</span><span class="p">,</span> <span class="nx">t</span><span class="p">).</span><span class="nx">y</span> <span class="o">*</span> <span class="mi">150</span><span class="p">;</span>
<span class="p">};</span>
<span class="c1">// Generate a random value to visualize (for now).</span>
<span class="nx">countries</span><span class="p">.</span><span class="nx">forEach</span><span class="p">(</span><span class="kd">function</span><span class="p">(</span><span class="nx">c</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="nx">c</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">random</span><span class="p">());</span>
<span class="kd">var</span> <span class="nx">w</span> <span class="o">=</span> <span class="mi">860</span><span class="p">,</span> <span class="nx">h</span> <span class="o">=</span> <span class="mi">400</span><span class="p">;</span>
<span class="kd">var</span> <span class="nx">vis</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">pv</span><span class="p">.</span><span class="nx">Panel</span><span class="p">()</span>
<span class="p">.</span><span class="nx">width</span><span class="p">(</span><span class="nx">w</span><span class="p">)</span>
<span class="p">.</span><span class="nx">height</span><span class="p">(</span><span class="nx">h</span><span class="p">);</span>
<span class="kd">var</span> <span class="nx">country</span> <span class="o">=</span> <span class="nx">vis</span><span class="p">.</span><span class="nx">add</span><span class="p">(</span><span class="nx">pv</span><span class="p">.</span><span class="nx">Panel</span><span class="p">)</span>
<span class="p">.</span><span class="nx">data</span><span class="p">(</span><span class="nx">countries</span><span class="p">);</span>
<span class="nx">country</span><span class="p">.</span><span class="nx">add</span><span class="p">(</span><span class="nx">pv</span><span class="p">.</span><span class="nx">Panel</span><span class="p">)</span>
<span class="p">.</span><span class="nx">data</span><span class="p">(</span><span class="kd">function</span><span class="p">(</span><span class="nx">c</span><span class="p">)</span> <span class="nx">c</span><span class="p">.</span><span class="nx">borders</span><span class="p">)</span>
<span class="p">.</span><span class="nx">add</span><span class="p">(</span><span class="nx">pv</span><span class="p">.</span><span class="nx">Line</span><span class="p">)</span>
<span class="p">.</span><span class="nx">data</span><span class="p">(</span><span class="kd">function</span><span class="p">(</span><span class="nx">l</span><span class="p">)</span> <span class="nx">l</span><span class="p">)</span>
<span class="p">.</span><span class="nx">left</span><span class="p">(</span><span class="kd">function</span><span class="p">(</span><span class="nx">d</span><span class="p">)</span> <span class="nx">xMap</span><span class="p">(</span><span class="nx">d</span><span class="p">.</span><span class="nx">lng</span><span class="p">,</span> <span class="nx">d</span><span class="p">.</span><span class="nx">lat</span><span class="p">))</span>
<span class="p">.</span><span class="nx">bottom</span><span class="p">(</span><span class="kd">function</span><span class="p">(</span><span class="nx">d</span><span class="p">)</span> <span class="nx">yMap</span><span class="p">(</span><span class="nx">d</span><span class="p">.</span><span class="nx">lng</span><span class="p">,</span> <span class="nx">d</span><span class="p">.</span><span class="nx">lat</span><span class="p">))</span>
<span class="p">.</span><span class="nx">antialias</span><span class="p">(</span><span class="kc">false</span><span class="p">)</span>
<span class="p">.</span><span class="nx">lineWidth</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="p">.</span><span class="nx">strokeStyle</span><span class="p">(</span><span class="s2">"#fff"</span><span class="p">)</span>
<span class="p">.</span><span class="nx">fillStyle</span><span class="p">(</span><span class="nx">pv</span><span class="p">.</span><span class="nx">ramp</span><span class="p">(</span><span class="s2">"steelblue"</span><span class="p">,</span> <span class="s2">"lightgreen"</span><span class="p">).</span><span class="nx">by</span><span class="p">(</span><span class="kd">function</span><span class="p">(</span><span class="nx">d</span><span class="p">,</span><span class="nx">l</span><span class="p">,</span><span class="nx">c</span><span class="p">)</span> <span class="nx">c</span><span class="p">.</span><span class="nx">value</span><span class="p">))</span>
<span class="p">.</span><span class="nx">title</span><span class="p">(</span><span class="kd">function</span><span class="p">(</span><span class="nx">d</span><span class="p">,</span><span class="nx">l</span><span class="p">,</span><span class="nx">c</span><span class="p">)</span> <span class="nx">c</span><span class="p">.</span><span class="nx">name</span><span class="p">)</span>
<span class="p">.</span><span class="nx">event</span><span class="p">(</span><span class="s2">"mousedown"</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">d</span><span class="p">,</span><span class="nx">l</span><span class="p">,</span><span class="nx">c</span><span class="p">)</span> <span class="nx">onGameClick</span><span class="p">(</span><span class="nx">c</span><span class="p">));</span>
<span class="nx">vis</span><span class="p">.</span><span class="nx">add</span><span class="p">(</span><span class="nx">pv</span><span class="p">.</span><span class="nx">Panel</span><span class="p">)</span>
<span class="p">.</span><span class="nx">data</span><span class="p">([</span>
<span class="p">[</span><span class="mi">1</span><span class="p">,</span><span class="mi">2</span><span class="p">,</span><span class="mi">3</span><span class="p">,</span><span class="mi">1</span><span class="p">],[</span><span class="mi">1</span><span class="p">,</span><span class="mi">3</span><span class="p">,</span><span class="mi">4</span><span class="p">,</span><span class="mi">1</span><span class="p">],[</span><span class="mi">1</span><span class="p">,</span><span class="mi">4</span><span class="p">,</span><span class="mi">5</span><span class="p">,</span><span class="mi">1</span><span class="p">],[</span><span class="mi">1</span><span class="p">,</span><span class="mi">5</span><span class="p">,</span><span class="mi">6</span><span class="p">,</span><span class="mi">1</span><span class="p">],[</span><span class="mi">1</span><span class="p">,</span><span class="mi">2</span><span class="p">,</span><span class="mi">6</span><span class="p">,</span><span class="mi">1</span><span class="p">],</span>
<span class="p">[</span><span class="mi">2</span><span class="p">,</span><span class="mi">3</span><span class="p">,</span><span class="mi">8</span><span class="p">,</span><span class="mi">2</span><span class="p">],[</span><span class="mi">8</span><span class="p">,</span><span class="mi">3</span><span class="p">,</span><span class="mi">9</span><span class="p">,</span><span class="mi">8</span><span class="p">],[</span><span class="mi">9</span><span class="p">,</span><span class="mi">3</span><span class="p">,</span><span class="mi">4</span><span class="p">,</span><span class="mi">9</span><span class="p">],[</span><span class="mi">10</span><span class="p">,</span><span class="mi">9</span><span class="p">,</span><span class="mi">4</span><span class="p">,</span><span class="mi">10</span><span class="p">],[</span><span class="mi">5</span><span class="p">,</span><span class="mi">10</span><span class="p">,</span><span class="mi">4</span><span class="p">,</span><span class="mi">5</span><span class="p">],</span>
<span class="p">[</span><span class="mi">5</span><span class="p">,</span><span class="mi">11</span><span class="p">,</span><span class="mi">10</span><span class="p">,</span><span class="mi">5</span><span class="p">],[</span><span class="mi">5</span><span class="p">,</span><span class="mi">6</span><span class="p">,</span><span class="mi">11</span><span class="p">,</span><span class="mi">5</span><span class="p">],[</span><span class="mi">11</span><span class="p">,</span><span class="mi">6</span><span class="p">,</span><span class="mi">7</span><span class="p">,</span><span class="mi">11</span><span class="p">],[</span><span class="mi">7</span><span class="p">,</span><span class="mi">6</span><span class="p">,</span><span class="mi">2</span><span class="p">,</span><span class="mi">7</span><span class="p">],[</span><span class="mi">8</span><span class="p">,</span><span class="mi">7</span><span class="p">,</span><span class="mi">2</span><span class="p">,</span><span class="mi">8</span><span class="p">],</span>
<span class="p">[</span><span class="mi">12</span><span class="p">,</span><span class="mi">9</span><span class="p">,</span><span class="mi">10</span><span class="p">,</span><span class="mi">12</span><span class="p">],[</span><span class="mi">12</span><span class="p">,</span><span class="mi">11</span><span class="p">,</span><span class="mi">10</span><span class="p">,</span><span class="mi">12</span><span class="p">],[</span><span class="mi">12</span><span class="p">,</span><span class="mi">11</span><span class="p">,</span><span class="mi">7</span><span class="p">,</span><span class="mi">12</span><span class="p">],[</span><span class="mi">12</span><span class="p">,</span><span class="mi">8</span><span class="p">,</span><span class="mi">7</span><span class="p">,</span><span class="mi">12</span><span class="p">]</span>
<span class="p">])</span> <span class="c1">// exclude [12,9,8,12] - the cut away triangle</span>
<span class="p">.</span><span class="nx">add</span><span class="p">(</span><span class="nx">pv</span><span class="p">.</span><span class="nx">Line</span><span class="p">)</span>
<span class="p">.</span><span class="nx">data</span><span class="p">(</span><span class="kd">function</span><span class="p">(</span><span class="nx">f</span><span class="p">)</span> <span class="nx">f</span><span class="p">)</span>
<span class="p">.</span><span class="nx">left</span><span class="p">(</span><span class="kd">function</span><span class="p">(</span><span class="nx">f</span><span class="p">,</span> <span class="nx">t</span><span class="p">)</span> <span class="nx">xMapI</span><span class="p">(</span><span class="nx">f</span><span class="p">,</span> <span class="nx">t</span><span class="p">))</span>
<span class="p">.</span><span class="nx">bottom</span><span class="p">(</span><span class="kd">function</span><span class="p">(</span><span class="nx">f</span><span class="p">,</span> <span class="nx">t</span><span class="p">)</span> <span class="nx">yMapI</span><span class="p">(</span><span class="nx">f</span><span class="p">,</span> <span class="nx">t</span><span class="p">))</span>
<span class="p">.</span><span class="nx">strokeStyle</span><span class="p">(</span><span class="s2">"#ccc"</span><span class="p">)</span>
<span class="p">.</span><span class="nx">lineWidth</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="p">.</span><span class="nx">antialias</span><span class="p">(</span><span class="kc">false</span><span class="p">);</span>
<span class="nx">vis</span><span class="p">.</span><span class="nx">render</span><span class="p">();</span>
<span class="nt"></script></span>
<span class="nt"></div></div></body></span>
<span class="nt"></html></span>
</pre></div>
<h3>Data</h3>
Due to size, the data file is omitted from this
example. See <a href="countries.js" target="_blank">countries.js</a>.
</div>
<div class="foot">
Copyright 2010 <a href="http://vis.stanford.edu">Stanford Visualization Group</a>
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