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+<?php
+
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
+
+/**
+ * Image_Graph - PEAR PHP OO Graph Rendering Utility.
+ *
+ * PHP versions 4 and 5
+ *
+ * LICENSE: This library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at your
+ * option) any later version. This library is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+ * General Public License for more details. You should have received a copy of
+ * the GNU Lesser General Public License along with this library; if not, write
+ * to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307 USA
+ *
+ * @category Images
+ * @package Image_Graph
+ * @subpackage DataPreprocessor
+ * @author Jesper Veggerby <pear.nosey@veggerby.dk>
+ * @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @version CVS: $Id$
+ * @link http://pear.php.net/package/Image_Graph
+ */
+
+/**
+ * Data preprocessor used for preformatting a data.
+ *
+ * A data preprocessor is used in cases where a value from a dataset or label must be
+ * displayed in another format or way than entered. This could for example be the need
+ * to display X-values as a date instead of 1, 2, 3, .. or even worse unix-timestamps.
+ * It could also be when a {@link Image_Graph_Marker_Value} needs to display values as percentages
+ * with 1 decimal digit instead of the default formatting (fx. 12.01271 -> 12.0%).
+ *
+ * @category Images
+ * @package Image_Graph
+ * @subpackage DataPreprocessor
+ * @author Jesper Veggerby <pear.nosey@veggerby.dk>
+ * @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @version Release: @package_version@
+ * @link http://pear.php.net/package/Image_Graph
+ * @abstract
+ */
+class Image_Graph_DataPreprocessor
+{
+
+ /**
+ * Image_Graph_DataPreprocessor [Constructor].
+ */
+ function Image_Graph_DataPreprocessor()
+ {
+ }
+
+ /**
+ * Process the value
+ *
+ * @param var $value The value to process/format
+ * @return string The processed value
+ * @access private
+ */
+ function _process($value)
+ {
+ return $value;
+ }
+
+}
+
+?> \ No newline at end of file