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countdown/jpowered/documentation/troubleShooting.htm
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countdown/jpowered/documentation/troubleShooting.htm
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
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<title>Advanced Graphs and Charts for PHP</title>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
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<link rel=STYLESHEET type="text/css" href="../images/960.css" />
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<link rel=STYLESHEET type="text/css" href="../images/jpprodstyle.css" />
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</head>
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<body>
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<!-- Title area -->
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<div class='container_12 header'>
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<div class='grid_4'>
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<a href='http://www.jpowered.com'><img style='border-width: 0px;' src='../images/jpowered.gif' width='270' height='60' align='left' alt='JPowered.com' /></a>
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</div>
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<div class='grid_8 omega product_title'>
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<h1>Advanced Graphs and Charts for PHP</h1>
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</div>
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</div>
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<!-- top menu bar -->
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<div class='container_12'>
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<div class='grid_12 innm'>
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<ul>
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<li> <a href="http://www.jpowered.com/php-scripts/adv-graph-chart/">Graph Home</a> </li>
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<li> <a href="http://www.jpowered.com/php-scripts/adv-graph-chart/buy-now.htm" title="Pricing Options and obtaining License keys">Pricing / License Options</a> </li>
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<li> <a href="http://www.jpowered.com/php-scripts/adv-graph-chart/demos/" title="View the Online Demos here">Online Demos</a> </li>
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<li> <a href="index.htm">Documentation</a> </li>
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<li> <a href="http://www.jpowered.com/php-scripts/adv-graph-chart/tutorials/" title="Online Tutorials">Tutorials</a> </li>
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</ul>
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</div>
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</div>
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<!-- main content -->
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<div class='container_12 main_content'>
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<div class='grid_9'>
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<h1>Trouble Shooting Guide</h1>
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<p>If you experience difficulties in getting the graph images to display then the following will help to establish the cause of the problem</p>
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<h4>Error Log File</h4>
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<p>In the event the graphing software encounters a problem it will write a message to an error log file. The Error Log File is located in <strong>./jpowered/graph/log/</strong></p>
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<p>Hopefully the error messages in there will provide you with enough information to quickly resolve the issue. If not then please feel free to contact us at <a href="http://www.jpowered.com/support.htm" title="For Help and Support, contact us here">JPowered Support</a> and we will be happy to assist.</p>
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<p> </p>
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<h4>Check the Data and Config processes</h4>
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<p>One of the most common problems is that either the Data or Config specified are not producing the result they
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should be. This can quickly be checked by entering the URL to those processes directly into the browser
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address bar</p>
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<p>For example, if the IMG tag in your page is:-</p>
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<textarea class="jpcodeblock" style="width: 600px;">
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<img src="http://www.yourdomain.com/jpowered/graph/vertical-bar-graph.php?
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data=http://www.yourdomain.com/data/vbardata.php&
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config=http://www.yourdomain.com/vbarconfig.txt"
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width="500"
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height="400" />
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</textarea>
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<p>then you would enter the following URLs directly into your browser address bar:-</p>
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<textarea class="jpcodeblock" style="width: 600px;">
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http://www.yourdomain.com/data/vbardata.php
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http://www.yourdomain.com/vbarconfig.txt
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</textarea>
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<p>This will quickly provide you with an indication of whether the problem is with the directory paths or the processes themselves.
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If all is fine with the data and config processes then you should proceed with the next step and run the graphing software in debug mode.</p>
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<p> </p>
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<h4>Debug Mode</h4>
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<p>If the log files do not provide the answer then the next step is to run the graphing software in debug mode.
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This is done by entering the URL of the IMG tag directly into browser address with an additional parameter added.</p>
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<p>For example, if the IMG tag in your page is:-</p>
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<textarea class="jpcodeblock" style="width: 600px;">
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<img src="http://www.yourdomain.com/jpowered/graph/vertical-bar-graph.php?
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data=http://www.yourdomain.com/data/vbardata.php&
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config=http://www.yourdomain.com/vbarconfig.txt"
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width="500"
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height="400" />
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</textarea>
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<p>then you would enter the following URL directly into your browser address bar:-</p>
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<textarea class="jpcodeblock" style="width: 600px;">
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http://www.yourdomain.com/jpowered/graph/vertical-bar-graph.php?data=http://www.yourdomain.com/data/vbardata.php&config=http://www.yourdomain.com/vbarconfig.txt&debug=true
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</textarea>
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<p>NOTE: the additional parameter added to the end of the url is "debug=true"<br />
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The additional parameter tells the graphing software to turn on error reporting and so error message will be
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displayed in the browser</p>
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<p>Again, hopefully the error messages will provide you with enough information to quickly resolve
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the issue. If not then please feel free to contact us at <a href="http://www.jpowered.com/support.htm" title="For Help and Support, contact us here">JPowered Support</a> and we will be happy to assist.</p>
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<p> </p>
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<h4>Relative URLs and Directory Paths</h4>
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<p>Another common cause of problems can be confusion over the directory paths. By default all relative paths are
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<strong>Relative to the Graphing Software and NOT the page</strong></p>
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<p>This can be overridden by the addition of the parameter <strong>baseurl</strong><br />
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For example, if your page containing the IMG tag is in your web root and you wish the data and config
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parameters to be relative to this then the IMG tag would look like this:-</p>
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<textarea class="jpcodeblock" style="width: 600px;">
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<img src="http://www.yourdomain.com/jpowered/graph/vertical-bar-graph.php?
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baseurl=http://www.yourdomain.com/&
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data=./data/vbardata.php&
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config=vbarconfig.txt"
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width="500"
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height="400" />
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</textarea>
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<p>This assumes that vbardata.php is located in the directory /data/ just below your web root and vbarconfig.txt is located in the web root.</p>
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<p> </p>
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</div>
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<div class='grid_3'>
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<p><a href="../index.htm">Package Index</a></p>
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<p><a href="../demo/index.htm">Demo Index</a></p>
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<p><a href="../documentation/index.htm">Documentation</a></p>
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<p><a href="../documentation/troubleShooting.htm">Troubleshooting Guide</a></p>
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<p><a href="http://www.jpowered.com/support.htm">Support</a></p>
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<h4>Documentation Contents</h4>
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<p><a href="../documentation/addingGraphsToPages.htm">Adding Graphs to Web Pages</a></p>
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<p><a href="../documentation/configurationOptions.htm">Configuration Options and Parameters</a></p>
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<p><a href="../documentation/graphData.htm">Supplying the Graph with Data</a></p>
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<p><a href="../documentation/sampleImageTags.htm">Sample Image Tags</a></p>
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<h4>Database Connections</h4>
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<p><a href="databaseInformationFile.htm">Database Information method</a></p>
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<p><a href="customDataFunction.htm">Custom Data Function</a></p>
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<p> </p>
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<p><a href="http://www.jpowered.com/php-scripts/adv-graph-chart/documentation/">more Documentation Online here</a></p>
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<p> </p>
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</div>
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</div>
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<div class='footer'>
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<!-- bottom menu bar -->
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<div class='container_12'>
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<div class='grid_12 innm'>
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<ul>
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<li> <a href="http://www.jpowered.com/php-scripts/adv-graph-chart/">Graph Home</a> </li>
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<li> <a href="http://www.jpowered.com/php-scripts/adv-graph-chart/buy-now.htm" title="Pricing Options and obtaining License keys">Pricing / License Options</a> </li>
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<li> <a href="http://www.jpowered.com/php-scripts/adv-graph-chart/demos/" title="View the Online Demos here">Online Demos</a> </li>
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<li> <a href="../documentation/index.htm">Documentation</a> </li>
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<li> <a href="http://www.jpowered.com/php-scripts/adv-graph-chart/tutorials/" title="Online Tutorials">Tutorials</a> </li>
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</ul>
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</div>
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</div>
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<!-- footer -->
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<div class='container_12'>
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<div class="grid_12 mc">[<a href="http://www.jpowered.com/"> JPowered.com </a>] [<a href="http://www.jpowered.com/products.htm" title="More software components for web applications"> More Products </a>] [<a href="http://www.jpowered.com/support.htm" title="For Help and Support, contact us here">Support </a>]</div>
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<div class="grid_12 cprt">Copyright © 2011 - 2014 Neutron Solutions Limited - All rights reserved.</div>
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</div>
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</div>
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</body>
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</html>
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