<div style="font-weight: bold;margin-left:15px;">sunspotsex3.php</div><link rel="stylesheet" href="../phphl.css" type="text/css"><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
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</pre></td><td class="hl-main" valign="top"><pre><span class="hl-inlinetags">&lt;?php</span><span class="hl-code"> </span><span class="hl-comment">//</span><span class="hl-comment"> content=&quot;text/plain; charset=utf-8&quot;</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-reserved">require_once</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">jpgraph/jpgraph.php</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-reserved">require_once</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">jpgraph/jpgraph_line.php</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-reserved">require_once</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">jpgraph/jpgraph_bar.php</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
 
</span><span class="hl-reserved">function</span><span class="hl-code"> </span><span class="hl-identifier">readsunspotdata</span><span class="hl-brackets">(</span><span class="hl-var">$aFile</span><span class="hl-code">, &amp;</span><span class="hl-var">$aYears</span><span class="hl-code">, &amp;</span><span class="hl-var">$aSunspots</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
    </span><span class="hl-var">$lines</span><span class="hl-code"> = @</span><span class="hl-identifier">file</span><span class="hl-brackets">(</span><span class="hl-var">$aFile</span><span class="hl-code">,</span><span class="hl-identifier">FILE_IGNORE_NEW_LINES</span><span class="hl-code">|</span><span class="hl-identifier">FILE_SKIP_EMPTY_LINES</span><span class="hl-brackets">)</span><span class="hl-code">;
    </span><span class="hl-reserved">if</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-var">$lines</span><span class="hl-code"> === </span><span class="hl-reserved">false</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-reserved">throw</span><span class="hl-code"> </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">JpGraphException</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">Can not read sunspot data file.</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
    </span><span class="hl-brackets">}</span><span class="hl-code">
    </span><span class="hl-reserved">foreach</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-var">$lines</span><span class="hl-code"> </span><span class="hl-reserved">as</span><span class="hl-code"> </span><span class="hl-var">$line</span><span class="hl-code"> =&gt; </span><span class="hl-var">$datarow</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-var">$split</span><span class="hl-code"> = </span><span class="hl-identifier">preg_split</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">/[\s]+/</span><span class="hl-quotes">'</span><span class="hl-code">,</span><span class="hl-var">$datarow</span><span class="hl-brackets">)</span><span class="hl-code">;
        </span><span class="hl-var">$aYears</span><span class="hl-brackets">[</span><span class="hl-brackets">]</span><span class="hl-code"> = </span><span class="hl-identifier">substr</span><span class="hl-brackets">(</span><span class="hl-identifier">trim</span><span class="hl-brackets">(</span><span class="hl-var">$split</span><span class="hl-brackets">[</span><span class="hl-number">0</span><span class="hl-brackets">]</span><span class="hl-brackets">)</span><span class="hl-code">,</span><span class="hl-number">0</span><span class="hl-code">,</span><span class="hl-number">4</span><span class="hl-brackets">)</span><span class="hl-code">;
        </span><span class="hl-var">$aSunspots</span><span class="hl-brackets">[</span><span class="hl-brackets">]</span><span class="hl-code"> = </span><span class="hl-identifier">trim</span><span class="hl-brackets">(</span><span class="hl-var">$split</span><span class="hl-brackets">[</span><span class="hl-number">1</span><span class="hl-brackets">]</span><span class="hl-brackets">)</span><span class="hl-code">;
    </span><span class="hl-brackets">}</span><span class="hl-code">
</span><span class="hl-brackets">}</span><span class="hl-code">
 
</span><span class="hl-var">$year</span><span class="hl-code"> = </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$ydata</span><span class="hl-code"> = </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-identifier">readsunspotdata</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">yearssn.txt</span><span class="hl-quotes">'</span><span class="hl-code">,</span><span class="hl-var">$year</span><span class="hl-code">,</span><span class="hl-var">$ydata</span><span class="hl-brackets">)</span><span class="hl-code">;
 
 </span><span class="hl-comment">//</span><span class="hl-comment"> Width and height of the graph</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$width</span><span class="hl-code"> = </span><span class="hl-number">600</span><span class="hl-code">; </span><span class="hl-var">$height</span><span class="hl-code"> = </span><span class="hl-number">200</span><span class="hl-code">;
 
</span><span class="hl-comment">//</span><span class="hl-comment"> Create a graph instance</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">Graph</span><span class="hl-brackets">(</span><span class="hl-var">$width</span><span class="hl-code">,</span><span class="hl-var">$height</span><span class="hl-brackets">)</span><span class="hl-code">;
 
</span><span class="hl-comment">//</span><span class="hl-comment"> Specify what scale we want to use,</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-comment">//</span><span class="hl-comment"> int = integer scale for the X-axis</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-comment">//</span><span class="hl-comment"> int = integer scale for the Y-axis</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetScale</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">intint</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
 
</span><span class="hl-comment">//</span><span class="hl-comment"> Setup a title for the graph</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">title</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Set</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">Sunspot example</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
 
</span><span class="hl-comment">//</span><span class="hl-comment"> Setup titles and X-axis labels</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">xaxis</span><span class="hl-code">-&gt;</span><span class="hl-identifier">title</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Set</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">(year from 1701)</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">xaxis</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetTickLabels</span><span class="hl-brackets">(</span><span class="hl-var">$year</span><span class="hl-brackets">)</span><span class="hl-code">;
 
</span><span class="hl-comment">//</span><span class="hl-comment"> Setup Y-axis title</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">yaxis</span><span class="hl-code">-&gt;</span><span class="hl-identifier">title</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Set</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">(# sunspots)</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
 
</span><span class="hl-comment">//</span><span class="hl-comment"> Create the linear plot</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$lineplot</span><span class="hl-code">=</span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LinePlot</span><span class="hl-brackets">(</span><span class="hl-var">$ydata</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$lineplot</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetFillColor</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">orange@0.5</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
 
</span><span class="hl-comment">//</span><span class="hl-comment"> Add the plot to the graph</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Add</span><span class="hl-brackets">(</span><span class="hl-var">$lineplot</span><span class="hl-brackets">)</span><span class="hl-code">;
 
</span><span class="hl-comment">//</span><span class="hl-comment"> Display the graph</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Stroke</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
 
</span><span class="hl-inlinetags">?&gt;</span></pre></td></tr></table></div>