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  28  <H3><A NAME="3_3_1">3.3.1 Plot extension modules</A></H3>
  29  <P> To add plots to the graph you will need one or more of the following
  30   files plot extension files depending on what kind of graph you need to
  31   create.</P>
  32  <UL>
  33  <LI>jpgraph_log.php, Plot extension to support logarithmic X and Y
  34   scales</LI>
  35  <LI>jpgraph_line.php, Plot extension. Needed to draw various line plots</LI>
  36  <LI>jpgraph_date.php, Plot extension to handle date scales.</LI>
  37  <LI>jpgraph_bar.php, Plot extension. Needed to draw various bar plots</LI>
  38  <LI>jpgraph_error.php, Plot extension. Needed to draw various error
  39   plots</LI>
  40  <LI>jpgraph_scatter.php, Plot extension. Needed to draw scatter and
  41   impulse plots.</LI>
  42  <LI>jpgraph_spider.php, Plot extension. Needed to draw spider plots.</LI>
  43  <LI>jpgraph_pie.php, Plot extension. Needed to draw Pie plots</LI>
  44  <LI>jpgraph_pie3d.php, Plot extension. Needed to draw 3D Pie plots</LI>
  45  <LI>jpgraph_gantt.php, Plot extension. Needed to create gantt plots</LI>
  46  <LI>jpgraph_radar.php, Plot extension. Needed for radar plots</LI>
  47  <LI>jpgraph_polar.php, Plot extension. Needed for Polar plots</LI>
  48  <LI>jpgraph_gantt.php, Plot extension. Needed for Gantt charts</LI>
  49  <LI>jpgraph_mgraph.php, Utility class to combine several graphs in the
  50   same image</LI>
  51  <LI>jpgraph_regstat.php, Statistic extension. Needed to plot spline and
  52   bezier curves</LI>
  53  <LI> jpgraph_stock.php, Plot extension. Needed to plot stock charts</LI>
  54  <LI> jpgraph_antispam.php, Special extension to generate anti-spam
  55   images consisting of letters+images which are very hard to digitally
  56   read with an OCR program</LI>
  57  <LI> jpgraph_gradient.php, Internal module. Contains all color gradient</LI>
  58  <LI> jpgraph_gb2312.php, Handling of gb2312 font encoding (used for some
  59   Chinese fonts)</LI>
  60  <LI> jpgraph_plotmark.inc, Handling of plotmarks in line and scatter
  61   plot.</LI>
  62  <LI> jpgraph_iconplot.php, Handling icons (small images) that can be
  63   added to the plots</LI>
  64  <LI> jpgraph_plotband.php, Handling of plotbands added to the graphs</LI>
  65  <LI> jpgraph_flags.php, Handling of country flags used as plot marks or
  66   as backgrounds.</LI>
  67  <LI> jpgraph_utils.php, Various utility function</LI>
  68  <LI> imgdata_*.inc, Encoded images for plotmarks</LI>
  69  <LI> flags*.dat, Image data for flags. Pre-compiled data for country
  70   flags.</LI>
  71  <LI>jpgraph_canvas.php, Plot extension to make it possible to draw
  72   arbitrary graphic on a canvas.</LI>
  73  <LI>jpgraph_canvtools.php, Add on to the canvas graph to provide an
  74   easier way to draw arbitrary shapes.</LI>
  75  </UL>
  76  <P> In the pro-version the following additional files are available</P>
  77  <UL>
  78  <LI> jpgraph_windrose.php, Windrose plot extension</LI>
  79  <LI> jpgraph_odo.php, Odometer plot extension</LI>
  80  <LI> jpgraph_barcode.php, Linear barcode extension</LI>
  81  <LI> jpgraph_pdf417.php, PDF417 2-Dimensional Barcode extension</LI>
  82  <LI> jpgraph_table.php, Creation of Excel like graphic tables</LI>
  83  </UL>
  84  <P></P>
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