/jpgraph/docs/chunkhtml/example_src/example16.6.html

https://gitlab.com/GLORIA04/conception-site-web · HTML · 114 lines · 103 code · 11 blank · 0 comment · 0 complexity · 7f76d850847ea70e9edab26e74b5a5e1 MD5 · raw file 

    

  1. <div style="font-weight: bold;margin-left:15px;">example16.6.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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  58. </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">
    59. 

  59. </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">;
    60. 

  60. </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">;
    61. 

  61. </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">;
    62. 

  62. </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">;
    63. 

  63.  
    64. 

  64. </span><span class="hl-comment">//</span><span class="hl-comment"> Create some &quot;fake&quot; regression data</span><span class="hl-comment"></span><span class="hl-code">
    65. 

  65. </span><span class="hl-var">$datay</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">;
    66. 

  66. </span><span class="hl-var">$datax</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">;
    67. 

  67. </span><span class="hl-var">$a</span><span class="hl-code">= </span><span class="hl-number">3</span><span class="hl-number">.2</span><span class="hl-code">;
    68. 

  68. </span><span class="hl-var">$b</span><span class="hl-code">= </span><span class="hl-number">2</span><span class="hl-number">.5</span><span class="hl-code">;
    69. 

  69. </span><span class="hl-reserved">for</span><span class="hl-brackets">(</span><span class="hl-var">$x</span><span class="hl-code">=</span><span class="hl-number">0</span><span class="hl-code">; </span><span class="hl-var">$x</span><span class="hl-code"> &lt; </span><span class="hl-number">20</span><span class="hl-code">; ++</span><span class="hl-var">$x</span><span class="hl-brackets">)</span><span class="hl-code"> </span><span class="hl-brackets">{</span><span class="hl-code">
    70. 

  70.     </span><span class="hl-var">$datax</span><span class="hl-brackets">[</span><span class="hl-var">$x</span><span class="hl-brackets">]</span><span class="hl-code"> = </span><span class="hl-var">$x</span><span class="hl-code">;
    71. 

  71.     </span><span class="hl-var">$datay</span><span class="hl-brackets">[</span><span class="hl-var">$x</span><span class="hl-brackets">]</span><span class="hl-code"> = </span><span class="hl-var">$a</span><span class="hl-code"> + </span><span class="hl-var">$b</span><span class="hl-code">*</span><span class="hl-var">$x</span><span class="hl-code"> + </span><span class="hl-identifier">rand</span><span class="hl-brackets">(</span><span class="hl-code">-</span><span class="hl-number">20</span><span class="hl-code">,</span><span class="hl-number">20</span><span class="hl-brackets">)</span><span class="hl-code">;
    72. 

  72. </span><span class="hl-brackets">}</span><span class="hl-code">
    73. 

  73.  
    74. 

  74. </span><span class="hl-var">$lr</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LinearRegression</span><span class="hl-brackets">(</span><span class="hl-var">$datax</span><span class="hl-code">, </span><span class="hl-var">$datay</span><span class="hl-brackets">)</span><span class="hl-code">;
    75. 

  75. </span><span class="hl-reserved">list</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-var">$stderr</span><span class="hl-code">, </span><span class="hl-var">$corr</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code"> = </span><span class="hl-var">$lr</span><span class="hl-code">-&gt;</span><span class="hl-identifier">GetStat</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
    76. 

  76. </span><span class="hl-reserved">list</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-var">$xd</span><span class="hl-code">, </span><span class="hl-var">$yd</span><span class="hl-code"> </span><span class="hl-brackets">)</span><span class="hl-code"> = </span><span class="hl-var">$lr</span><span class="hl-code">-&gt;</span><span class="hl-identifier">GetY</span><span class="hl-brackets">(</span><span class="hl-number">0</span><span class="hl-code">,</span><span class="hl-number">19</span><span class="hl-brackets">)</span><span class="hl-code">;
    77. 

  77.  
    78. 

  78. </span><span class="hl-comment">//</span><span class="hl-comment"> Create the graph</span><span class="hl-comment"></span><span class="hl-code">
    79. 

  79. </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">300</span><span class="hl-code">,</span><span class="hl-number">250</span><span class="hl-brackets">)</span><span class="hl-code">;
    80. 

  80. </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-brackets">)</span><span class="hl-code">;
    81. 

  81.  
    82. 

  82. </span><span class="hl-comment">//</span><span class="hl-comment"> Setup title</span><span class="hl-comment"></span><span class="hl-code">
    83. 

  83. </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">&quot;</span><span class="hl-string">Linear regression</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">;
    84. 

  84. </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_BOLD</span><span class="hl-code">,</span><span class="hl-number">14</span><span class="hl-brackets">)</span><span class="hl-code">;
    85. 

  85.  
    86. 

  86. </span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">subtitle</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Set</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">(stderr=</span><span class="hl-quotes">'</span><span class="hl-code">.</span><span class="hl-identifier">sprintf</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">%.2f</span><span class="hl-quotes">'</span><span class="hl-code">,</span><span class="hl-var">$stderr</span><span class="hl-brackets">)</span><span class="hl-code">.</span><span class="hl-quotes">'</span><span class="hl-string">, corr=</span><span class="hl-quotes">'</span><span class="hl-code">.</span><span class="hl-identifier">sprintf</span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">%.2f</span><span class="hl-quotes">'</span><span class="hl-code">,</span><span class="hl-var">$corr</span><span class="hl-brackets">)</span><span class="hl-code">.</span><span class="hl-quotes">'</span><span class="hl-string">)</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
    87. 

  87. </span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">subtitle</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">;
    88. 

  88.  
    89. 

  89. </span><span class="hl-comment">//</span><span class="hl-comment"> make sure that the X-axis is always at the</span><span class="hl-comment"></span><span class="hl-code">
    90. 

  90. </span><span class="hl-comment">//</span><span class="hl-comment"> bottom at the plot and not just at Y=0 which is</span><span class="hl-comment"></span><span class="hl-code">
    91. 

  91. </span><span class="hl-comment">//</span><span class="hl-comment"> the default position</span><span class="hl-comment"></span><span class="hl-code">
    92. 

  92. </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">;
    93. 

  93.  
    94. 

  94. </span><span class="hl-comment">//</span><span class="hl-comment"> Create the scatter plot with some nice colors</span><span class="hl-comment"></span><span class="hl-code">
    95. 

  95. </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">;
    96. 

  96. </span><span class="hl-var">$sp1</span><span class="hl-code">-&gt;</span><span class="hl-identifier">mark</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetType</span><span class="hl-brackets">(</span><span class="hl-identifier">MARK_FILLEDCIRCLE</span><span class="hl-brackets">)</span><span class="hl-code">;
    97. 

  97. </span><span class="hl-var">$sp1</span><span class="hl-code">-&gt;</span><span class="hl-identifier">mark</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetFillColor</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">red</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">;
    98. 

  98. </span><span class="hl-var">$sp1</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetColor</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">blue</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">;
    99. 

  99. </span><span class="hl-var">$sp1</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetWeight</span><span class="hl-brackets">(</span><span class="hl-number">3</span><span class="hl-brackets">)</span><span class="hl-code">;
    100. 

  100. </span><span class="hl-var">$sp1</span><span class="hl-code">-&gt;</span><span class="hl-identifier">mark</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetWidth</span><span class="hl-brackets">(</span><span class="hl-number">4</span><span class="hl-brackets">)</span><span class="hl-code">;
    101. 

  101.  
    102. 

  102. </span><span class="hl-comment">//</span><span class="hl-comment"> Create the regression line</span><span class="hl-comment"></span><span class="hl-code">
    103. 

  103. </span><span class="hl-var">$lplot</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">LinePlot</span><span class="hl-brackets">(</span><span class="hl-var">$yd</span><span class="hl-brackets">)</span><span class="hl-code">;
    104. 

  104. </span><span class="hl-var">$lplot</span><span class="hl-code">-&gt;</span><span class="hl-identifier">SetWeight</span><span class="hl-brackets">(</span><span class="hl-number">2</span><span class="hl-brackets">)</span><span class="hl-code">;
    105. 

  105. </span><span class="hl-var">$lplot</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">navy</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
    106. 

  106.  
    107. 

  107. </span><span class="hl-comment">//</span><span class="hl-comment"> Add the pltos to the line</span><span class="hl-comment"></span><span class="hl-code">
    108. 

  108. </span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Add</span><span class="hl-brackets">(</span><span class="hl-var">$sp1</span><span class="hl-brackets">)</span><span class="hl-code">;
    109. 

  109. </span><span class="hl-var">$graph</span><span class="hl-code">-&gt;</span><span class="hl-identifier">Add</span><span class="hl-brackets">(</span><span class="hl-var">$lplot</span><span class="hl-brackets">)</span><span class="hl-code">;
    110. 

  110.  
    111. 

  111. </span><span class="hl-comment">//</span><span class="hl-comment"> ... and stroke</span><span class="hl-comment"></span><span class="hl-code">
    112. 

  112. </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">;
    113. 

  113.  
    114. 

  114. </span><span class="hl-inlinetags">?&gt;</span></pre></td></tr></table></div>
    115.