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diff --git a/libkdchart/KDChartBaseSeries.h b/libkdchart/KDChartBaseSeries.h
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+/* -*- Mode: C++ -*-
+   KDChart - a multi-platform charting engine
+   */
+
+/****************************************************************************
+ ** Copyright (C) 2001-2003 Klarälvdalens Datakonsult AB.  All rights reserved.
+ **
+ ** This file is part of the KDChart library.
+ **
+ ** This file may be distributed and/or modified under the terms of the
+ ** GNU General Public License version 2 as published by the Free Software
+ ** Foundation and appearing in the file LICENSE.GPL included in the
+ ** packaging of this file.
+ **
+ ** Licensees holding valid commercial KDChart licenses may use this file in
+ ** accordance with the KDChart Commercial License Agreement provided with
+ ** the Software.
+ **
+ ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ **
+ ** See http://www.klaralvdalens-datakonsult.se/?page=products for
+ **   information about KDChart Commercial License Agreements.
+ **
+ ** Contact info@klaralvdalens-datakonsult.se if any conditions of this
+ ** licensing are not clear to you.
+ **
+ **********************************************************************/
+#ifndef __KDCHARTBASESERIES_H__
+#define __KDCHARTBASESERIES_H__
+
+// A single data series abstracted.
+// Is included in a DataSeriesBag.
+// Will be a base class for other series objects, such as DataVectorSeries,
+// and DataQuerySeries.
+//
+// Requirements:
+// - Able to handle its own parameters, colours, legend texts, etc.
+// - Able to hide/show itself.
+// - Almost completely abstract, so we can inherit it from other classes.
+//   Implement things like hide and show here tho.
+
+#include "KDChartDataIntern.h"
+
+class KDCHART_EXPORT KDChartBaseSeries
+{
+    public:
+        virtual ~KDChartBaseSeries();
+        virtual uint rows() const = 0;
+        virtual const KDChartData& cell( uint row ) const = 0;
+        virtual void setCell( uint row, const KDChartData& element) = 0;
+        virtual void expand( uint rows ) = 0;
+
+        // methods modelled on the TableBase methods.
+        virtual double maxValue( int coordinate, bool &ok ) const = 0;
+        virtual double minValue( int coordinate, bool &ok ) const = 0;
+};
+
+
+#endif