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Alexander Schwarz
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<div style="font-weight: bold;margin-left:15px;">manualtickex2.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-comment">//</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-comment">//</span><span class="hl-comment"> Basic example on how to use custom tickmark feature to have a label</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-comment">//</span><span class="hl-comment"> at the start of each month.</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-comment">//</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_utils.inc.php</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"> </span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-comment">//</span><span class="hl-comment"> Create some random data for the plot. We use the current time for the</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-comment">//</span><span class="hl-comment"> first X-position</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-comment">//</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$f</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">FuncGenerator</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">cos($x)+1.5*cos(2*$x)</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-reserved">list</span><span class="hl-brackets">(</span><span class="hl-var">$datax</span><span class="hl-code">,</span><span class="hl-var">$datay</span><span class="hl-brackets">)</span><span class="hl-code"> = </span><span class="hl-var">$f</span><span class="hl-code">-&gt;</span><span class="hl-identifier">E</span><span class="hl-brackets">(</span><span class="hl-number">0</span><span class="hl-code">,</span><span class="hl-number">10</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Now get labels at 1/2 PI intervall</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$tickPositions</span><span class="hl-code"> = </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$tickLabels</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">$tickPositions</span><span class="hl-brackets">[</span><span class="hl-number">0</span><span class="hl-brackets">]</span><span class="hl-code"> = </span><span class="hl-number">0</span><span class="hl-code">;
</span><span class="hl-var">$tickLabels</span><span class="hl-brackets">[</span><span class="hl-number">0</span><span class="hl-brackets">]</span><span class="hl-code"> = </span><span class="hl-quotes">'</span><span class="hl-string">0</span><span class="hl-quotes">'</span><span class="hl-code">;
</span><span class="hl-reserved">for</span><span class="hl-brackets">(</span><span class="hl-var">$i</span><span class="hl-code">=</span><span class="hl-number">1</span><span class="hl-code">; </span><span class="hl-var">$i</span><span class="hl-code">/</span><span class="hl-number">2</span><span class="hl-code">*</span><span class="hl-identifier">M_PI</span><span class="hl-code"> &lt; </span><span class="hl-number">11</span><span class="hl-code"> ; ++</span><span class="hl-var">$i</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
</span><span class="hl-var">$tickPositions</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code"> = </span><span class="hl-var">$i</span><span class="hl-code">/</span><span class="hl-number">2</span><span class="hl-code">*</span><span class="hl-identifier">M_PI</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">$i</span><span class="hl-code"> % </span><span class="hl-number">2</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code">
</span><span class="hl-var">$tickLabels</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code"> = </span><span class="hl-var">$i</span><span class="hl-code">.</span><span class="hl-quotes">'</span><span class="hl-string">/2</span><span class="hl-quotes">'</span><span class="hl-code">.</span><span class="hl-identifier">SymChar</span><span class="hl-code">::</span><span class="hl-identifier">Get</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">pi</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-reserved">else</span><span class="hl-code">
</span><span class="hl-var">$tickLabels</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-brackets">]</span><span class="hl-code"> = </span><span class="hl-brackets">(</span><span class="hl-var">$i</span><span class="hl-code">/</span><span class="hl-number">2</span><span class="hl-brackets">)</span><span class="hl-code">.</span><span class="hl-identifier">SymChar</span><span class="hl-code">::</span><span class="hl-identifier">Get</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">pi</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-brackets">}</span><span class="hl-code">
</span><span class="hl-var">$n</span><span class="hl-code"> = </span><span class="hl-identifier">count</span><span class="hl-brackets">(</span><span class="hl-var">$datax</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$xmin</span><span class="hl-code"> = </span><span class="hl-var">$datax</span><span class="hl-brackets">[</span><span class="hl-number">0</span><span class="hl-brackets">]</span><span class="hl-code">;
</span><span class="hl-var">$xmax</span><span class="hl-code"> = </span><span class="hl-var">$datax</span><span class="hl-brackets">[</span><span class="hl-var">$n</span><span class="hl-code">-</span><span class="hl-number">1</span><span class="hl-brackets">]</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-comment">//</span><span class="hl-comment"> The code to setup a very basic graph</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-comment">//</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">Graph</span><span class="hl-brackets">(</span><span class="hl-number">400</span><span class="hl-code">,</span><span class="hl-number">200</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-comment">//</span><span class="hl-comment"> We use an integer scale on the X-axis since the positions on the X axis</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-comment">//</span><span class="hl-comment"> are assumed to be UNI timestamps</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$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">linlin</span><span class="hl-quotes">'</span><span class="hl-code">,</span><span class="hl-number">0</span><span class="hl-code">,</span><span class="hl-number">0</span><span class="hl-code">,</span><span class="hl-var">$xmin</span><span class="hl-code">,</span><span class="hl-var">$xmax</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">title</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Set</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">Example with manual tick labels</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">title</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetFont</span><span class="hl-brackets">(</span><span class="hl-identifier">FF_ARIAL</span><span class="hl-code">,</span><span class="hl-identifier">FS_NORMAL</span><span class="hl-code">,</span><span class="hl-number">12</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-comment">//</span><span class="hl-comment"> Make sure that the X-axis is always at the bottom of the scale</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-comment">//</span><span class="hl-comment"> (By default the X-axis is alwys positioned at Y=0 so if the scale</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-comment">//</span><span class="hl-comment"> doesn't happen to include 0 the axis will not be shown)</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">xaxis</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetPos</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">min</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Now set the tic positions</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">xaxis</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetMajTickPositions</span><span class="hl-brackets">(</span><span class="hl-var">$tickPositions</span><span class="hl-code">,</span><span class="hl-var">$tickLabels</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Use Times font</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">xaxis</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetFont</span><span class="hl-brackets">(</span><span class="hl-identifier">FF_TIMES</span><span class="hl-code">,</span><span class="hl-identifier">FS_NORMAL</span><span class="hl-code">,</span><span class="hl-number">10</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">yaxis</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetFont</span><span class="hl-brackets">(</span><span class="hl-identifier">FF_TIMES</span><span class="hl-code">,</span><span class="hl-identifier">FS_NORMAL</span><span class="hl-code">,</span><span class="hl-number">10</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Add a X-grid</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">xgrid</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Show</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Create the plot line</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$p1</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">$datay</span><span class="hl-code">,</span><span class="hl-var">$datax</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$p1</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetColor</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">teal</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Add</span><span class="hl-brackets">(</span><span class="hl-var">$p1</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Output graph</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$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>