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<div style="font-weight: bold;margin-left:15px;">impulsex4.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"><?php</span><span class="hl-code"> </span><span class="hl-comment">//</span><span class="hl-comment"> content="text/plain; charset=utf-8"</span><span class="hl-comment"></span><span class="hl-code">
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</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">;
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</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_scatter.php</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
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</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">;
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</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_plotline.php</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$numpoints</span><span class="hl-code">=</span><span class="hl-number">50</span><span class="hl-code">;
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</span><span class="hl-var">$k</span><span class="hl-code">=</span><span class="hl-number">0</span><span class="hl-number">.05</span><span class="hl-code">;
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</span><span class="hl-comment">//</span><span class="hl-comment"> Create some data points</span><span class="hl-comment"></span><span class="hl-code">
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</span><span class="hl-reserved">for</span><span class="hl-brackets">(</span><span class="hl-var">$i</span><span class="hl-code">=-</span><span class="hl-var">$numpoints</span><span class="hl-code">+</span><span class="hl-number">1</span><span class="hl-code">; </span><span class="hl-var">$i</span><span class="hl-code"><</span><span class="hl-number">0</span><span class="hl-code">; ++</span><span class="hl-var">$i</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
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</span><span class="hl-var">$datay</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-code">+</span><span class="hl-var">$numpoints</span><span class="hl-code">-</span><span class="hl-number">1</span><span class="hl-brackets">]</span><span class="hl-code">=</span><span class="hl-identifier">exp</span><span class="hl-brackets">(</span><span class="hl-var">$k</span><span class="hl-code">*</span><span class="hl-var">$i</span><span class="hl-brackets">)</span><span class="hl-code">*</span><span class="hl-identifier">cos</span><span class="hl-brackets">(</span><span class="hl-number">2</span><span class="hl-code">*</span><span class="hl-identifier">M_PI</span><span class="hl-code">/</span><span class="hl-number">10</span><span class="hl-code">*</span><span class="hl-var">$i</span><span class="hl-brackets">)</span><span class="hl-code">*</span><span class="hl-number">14</span><span class="hl-code">;
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</span><span class="hl-var">$datayenv</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-code">+</span><span class="hl-var">$numpoints</span><span class="hl-code">-</span><span class="hl-number">1</span><span class="hl-brackets">]</span><span class="hl-code">=</span><span class="hl-identifier">exp</span><span class="hl-brackets">(</span><span class="hl-var">$k</span><span class="hl-code">*</span><span class="hl-var">$i</span><span class="hl-brackets">)</span><span class="hl-code">*</span><span class="hl-number">14</span><span class="hl-code">;
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</span><span class="hl-var">$datax</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-code">+</span><span class="hl-var">$numpoints</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-var">$i</span><span class="hl-code">;
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</span><span class="hl-brackets">}</span><span class="hl-code">
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</span><span class="hl-reserved">for</span><span class="hl-brackets">(</span><span class="hl-var">$i</span><span class="hl-code">=</span><span class="hl-number">0</span><span class="hl-code">; </span><span class="hl-var">$i</span><span class="hl-code"><</span><span class="hl-var">$numpoints</span><span class="hl-code">; ++</span><span class="hl-var">$i</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
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</span><span class="hl-var">$datay</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-code">+</span><span class="hl-var">$numpoints</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-identifier">exp</span><span class="hl-brackets">(</span><span class="hl-code">-</span><span class="hl-var">$k</span><span class="hl-code">*</span><span class="hl-var">$i</span><span class="hl-brackets">)</span><span class="hl-code">*</span><span class="hl-identifier">cos</span><span class="hl-brackets">(</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-number">10</span><span class="hl-code">*</span><span class="hl-var">$i</span><span class="hl-brackets">)</span><span class="hl-code">*</span><span class="hl-number">14</span><span class="hl-code">;
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</span><span class="hl-var">$datayenv</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-code">+</span><span class="hl-var">$numpoints</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-identifier">exp</span><span class="hl-brackets">(</span><span class="hl-code">-</span><span class="hl-var">$k</span><span class="hl-code">*</span><span class="hl-var">$i</span><span class="hl-brackets">)</span><span class="hl-code">*</span><span class="hl-number">14</span><span class="hl-code">;
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</span><span class="hl-var">$datax</span><span class="hl-brackets">[</span><span class="hl-var">$i</span><span class="hl-code">+</span><span class="hl-var">$numpoints</span><span class="hl-code">-</span><span class="hl-number">1</span><span class="hl-brackets">]</span><span class="hl-code">=</span><span class="hl-var">$i</span><span class="hl-code">;
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</span><span class="hl-brackets">}</span><span class="hl-code">
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</span><span class="hl-comment">//</span><span class="hl-comment"> Setup the basic parameters for the graph</span><span class="hl-comment"></span><span class="hl-code">
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</span><span class="hl-var">$graph</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">Graph</span><span class="hl-brackets">(</span><span class="hl-number">500</span><span class="hl-code">,</span><span class="hl-number">250</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">SetScale</span><span class="hl-brackets">(</span><span class="hl-quotes">"</span><span class="hl-string">intlin</span><span class="hl-quotes">"</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">SetShadow</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">SetBox</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">title</span><span class="hl-code">-></span><span class="hl-identifier">Set</span><span class="hl-brackets">(</span><span class="hl-quotes">"</span><span class="hl-string">Impuls Example 4</span><span class="hl-quotes">"</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">title</span><span class="hl-code">-></span><span class="hl-identifier">SetFont</span><span class="hl-brackets">(</span><span class="hl-identifier">FF_FONT1</span><span class="hl-code">,</span><span class="hl-identifier">FS_BOLD</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-comment">//</span><span class="hl-comment"> Set some other color then the boring default</span><span class="hl-comment"></span><span class="hl-code">
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">SetColor</span><span class="hl-brackets">(</span><span class="hl-quotes">"</span><span class="hl-string">lightyellow</span><span class="hl-quotes">"</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">SetMarginColor</span><span class="hl-brackets">(</span><span class="hl-quotes">"</span><span class="hl-string">khaki</span><span class="hl-quotes">"</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-comment">//</span><span class="hl-comment"> Set legend box specification</span><span class="hl-comment"></span><span class="hl-code">
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">legend</span><span class="hl-code">-></span><span class="hl-identifier">SetFillColor</span><span class="hl-brackets">(</span><span class="hl-quotes">"</span><span class="hl-string">white</span><span class="hl-quotes">"</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">legend</span><span class="hl-code">-></span><span class="hl-identifier">SetLineWeight</span><span class="hl-brackets">(</span><span class="hl-number">2</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-comment">//</span><span class="hl-comment"> Set X-axis at the minimum value of Y-axis (default will be at 0)</span><span class="hl-comment"></span><span class="hl-code">
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">xaxis</span><span class="hl-code">-></span><span class="hl-identifier">SetPos</span><span class="hl-brackets">(</span><span class="hl-quotes">"</span><span class="hl-string">min</span><span class="hl-quotes">"</span><span class="hl-brackets">)</span><span class="hl-code">; </span><span class="hl-comment">//</span><span class="hl-comment"> "min" will position the x-axis at the minimum value of the Y-axis</span><span class="hl-comment"></span><span class="hl-code">
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</span><span class="hl-comment">//</span><span class="hl-comment"> Extend the margin for the labels on the Y-axis and reverse the direction</span><span class="hl-comment"></span><span class="hl-code">
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</span><span class="hl-comment">//</span><span class="hl-comment"> of the ticks on the Y-axis</span><span class="hl-comment"></span><span class="hl-code">
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">yaxis</span><span class="hl-code">-></span><span class="hl-identifier">SetLabelMargin</span><span class="hl-brackets">(</span><span class="hl-number">12</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">xaxis</span><span class="hl-code">-></span><span class="hl-identifier">SetLabelMargin</span><span class="hl-brackets">(</span><span class="hl-number">6</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">yaxis</span><span class="hl-code">-></span><span class="hl-identifier">SetTickSide</span><span class="hl-brackets">(</span><span class="hl-identifier">SIDE_LEFT</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">xaxis</span><span class="hl-code">-></span><span class="hl-identifier">SetTickSide</span><span class="hl-brackets">(</span><span class="hl-identifier">SIDE_DOWN</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-comment">//</span><span class="hl-comment"> Add mark graph with static lines</span><span class="hl-comment"></span><span class="hl-code">
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</span><span class="hl-var">$line</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">PlotLine</span><span class="hl-brackets">(</span><span class="hl-identifier">HORIZONTAL</span><span class="hl-code">,</span><span class="hl-number">0</span><span class="hl-code">,</span><span class="hl-quotes">"</span><span class="hl-string">black</span><span class="hl-quotes">"</span><span class="hl-code">,</span><span class="hl-number">2</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">AddLine</span><span class="hl-brackets">(</span><span class="hl-var">$line</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-comment">//</span><span class="hl-comment"> Create a new impuls type scatter plot</span><span class="hl-comment"></span><span class="hl-code">
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</span><span class="hl-var">$sp1</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">ScatterPlot</span><span class="hl-brackets">(</span><span class="hl-var">$datay</span><span class="hl-code">,</span><span class="hl-var">$datax</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$sp1</span><span class="hl-code">-></span><span class="hl-identifier">mark</span><span class="hl-code">-></span><span class="hl-identifier">SetType</span><span class="hl-brackets">(</span><span class="hl-identifier">MARK_SQUARE</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$sp1</span><span class="hl-code">-></span><span class="hl-identifier">mark</span><span class="hl-code">-></span><span class="hl-identifier">SetFillColor</span><span class="hl-brackets">(</span><span class="hl-quotes">"</span><span class="hl-string">red</span><span class="hl-quotes">"</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$sp1</span><span class="hl-code">-></span><span class="hl-identifier">mark</span><span class="hl-code">-></span><span class="hl-identifier">SetWidth</span><span class="hl-brackets">(</span><span class="hl-number">3</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$sp1</span><span class="hl-code">-></span><span class="hl-identifier">SetImpuls</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$sp1</span><span class="hl-code">-></span><span class="hl-identifier">SetColor</span><span class="hl-brackets">(</span><span class="hl-quotes">"</span><span class="hl-string">blue</span><span class="hl-quotes">"</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$sp1</span><span class="hl-code">-></span><span class="hl-identifier">SetWeight</span><span class="hl-brackets">(</span><span class="hl-number">1</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$sp1</span><span class="hl-code">-></span><span class="hl-identifier">SetLegend</span><span class="hl-brackets">(</span><span class="hl-quotes">"</span><span class="hl-string">Non-causal signal</span><span class="hl-quotes">"</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">Add</span><span class="hl-brackets">(</span><span class="hl-var">$sp1</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-comment">//</span><span class="hl-comment"> Create the envelope plot</span><span class="hl-comment"></span><span class="hl-code">
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</span><span class="hl-var">$ep1</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LinePlot</span><span class="hl-brackets">(</span><span class="hl-var">$datayenv</span><span class="hl-code">,</span><span class="hl-var">$datax</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$ep1</span><span class="hl-code">-></span><span class="hl-identifier">SetStyle</span><span class="hl-brackets">(</span><span class="hl-quotes">"</span><span class="hl-string">dotted</span><span class="hl-quotes">"</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$ep1</span><span class="hl-code">-></span><span class="hl-identifier">SetLegend</span><span class="hl-brackets">(</span><span class="hl-quotes">"</span><span class="hl-string">Positive envelope</span><span class="hl-quotes">"</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">Add</span><span class="hl-brackets">(</span><span class="hl-var">$ep1</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">Stroke</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
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</span><span class="hl-inlinetags">?></span></pre></td></tr></table></div>
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Block a user