117 lines
9.0 KiB
HTML
117 lines
9.0 KiB
HTML
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Features</title><link rel="stylesheet" type="text/css" href="manual.css"><meta name="generator" content="DocBook XSL Stylesheets V1.76.0"><link rel="home" href="index.html" title="JpGraph Manual"><link rel="up" href="ch24.html" title="Chapter 24. Linear Barcodes (One Dimensional Barcodes)"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Features</th></tr><tr><td width="20%" align="left"> </td><th width="60%" align="center">Chapter 24. Linear Barcodes (One Dimensional Barcodes)</th><td width="20%" align="right"> </td></tr></table><hr></div><div class="sect1" title="Features"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2596063"></a>Features</h2></div></div></div>
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<p>This is a summary of the features available in the JpGraph barcode extension. </p>
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<p>
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</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
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<p>Supports the following symbologies (with data validation)</p>
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<p>
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</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
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<p>UPC A</p>
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</li><li class="listitem">
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<p>UPC E</p>
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</li><li class="listitem">
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<p>EAN 128</p>
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</li><li class="listitem">
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<p>EAN 13</p>
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</li><li class="listitem">
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<p>EAN 8</p>
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</li><li class="listitem">
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<p>CODE 11 (USD-8)</p>
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</li><li class="listitem">
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<p>CODE 39</p>
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</li><li class="listitem">
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<p>CODE 128</p>
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</li><li class="listitem">
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<p>Industrial 2 of 5</p>
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</li><li class="listitem">
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<p>Interleaved 2 of 5</p>
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</li><li class="listitem">
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<p>Codabar</p>
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</li><li class="listitem">
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<p>Bookland (ISBN)</p>
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</li></ol></div><p>
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</p>
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</li><li class="listitem">
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<p>Input data is verified against the official specification of each
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symbologies and makes it impossible to create invalid bar codes.</p>
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</li><li class="listitem">
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<p>Output format </p>
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<p>
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</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
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<p>Image format (either PNG or JPG encoding) </p>
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</li><li class="listitem">
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<p>Postscript</p>
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</li><li class="listitem">
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<p>Encapsulated postscript</p>
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</li></ol></div><p>
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</p>
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</li><li class="listitem">
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<p>Formatting options </p>
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<p>
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</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
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<p>User specified module width. This controls the width of
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the smallest unity in the barcode.</p>
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</li><li class="listitem">
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<p>Automatic calculation of optional checksum for symbologies
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where the checksum is optional</p>
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</li><li class="listitem">
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<p>User specified scaling of resulting bar code</p>
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</li><li class="listitem">
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<p>Horizontal or vertical bar code layout</p>
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</li><li class="listitem">
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<p>Suppression of human readable text on barcodes</p>
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</li><li class="listitem">
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<p>Selectable font for human readable text</p>
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</li></ol></div><p>
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</p>
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</li></ul></div><p>
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</p>
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<p>
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</p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3>
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<p>The term "symbology" is the term used to describe the combination of
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encodation method (how characters are translated to bars) and the layout of
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the bars specified by a particular barcode standard. All of the listed
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standard symbologies above are still widely used. Many of the symbologies
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overlap in terms of functionality and multiple symbologies might be possible
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to use for a particular application unless there is a strict standard that
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stipulates that a particular symbology should be used. </p>
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<p>The reason for the existence of so many symbologies with overlapping
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functionality is in some cases the result of different companies early on
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specifying there own patented barcodes in order to gain market shares or in
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some cases lock customers to a specific brand of scanner. In other cases it
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is simply the result of that earlier barcodes could not handle new
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demands.</p>
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</div><p>
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</p>
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<div class="sect2" title="Sample application"><div class="titlepage"><div><div><h3 class="title"><a name="id2596334"></a> Sample application</h3></div></div></div>
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<p>Even though primarily the JpGraph bar code extension is meant, and designed,
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to be used as a library within a larger system there is a small demo web
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application to allow easy creation of linear barcodes bar codes. This
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application is primarily included as a demo of the features available and not as
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a finalized product.</p>
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<p>The application is available under the directory
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"<code class="filename">barcode/demoapp</code>" as "<code class="filename">index.html</code>"
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in the main library directory</p>
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<p><a class="xref" href="ch24s04.html#fig.linear-barcode-demoapp" title="Figure 24.2. Linear Barcode Demo application (screen shot from running in WEB-browser)">Figure 24.2. Linear Barcode Demo application (screen shot from running in
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WEB-browser)</a> shows a screen shot of the
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demo application</p>
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<p>
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</p><div class="figure"><a name="fig.linear-barcode-demoapp"></a><p class="title"><b>Figure 24.2. Linear Barcode Demo application (screen shot from running in
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WEB-browser)</b></p><div class="figure-contents">
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<div class="mediaobject"><img src="images/barcode-demoapp.png" alt="Linear Barcode Demo application (screen shot from running in WEB-browser)"></div>
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</div></div><p><br class="figure-break">
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</p>
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<p>We strongly suggest running this demo application to get a feel for what
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formatting options and how the different symbologies behave.</p>
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<p>
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</p><div class="tip" title="Tip" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Tip</h3>
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<p>There is also a command line utility that allows the creation of
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barcodes from the command line
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"<code class="filename">mkbarcode.php</code>"</p>
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</div><p>
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</p>
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</div>
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</div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"> </td><td width="20%" align="center"><a accesskey="u" href="ch24.html">Up</a></td><td width="40%" align="right"> </td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
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