diff --git a/demos/chartviewer/charts.cpp b/demos/chartviewer/charts.cpp
new file mode 100644
index 0000000..602dde7
--- /dev/null
+++ b/demos/chartviewer/charts.cpp
@@ -0,0 +1,29 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the Qt Commercial Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "charts.h"
+
+Chart::Chart(){};
+Chart::~Chart(){};
+
+void Chart::initialize()
+{
+    Charts::addChart(this);
+}
diff --git a/demos/chartviewer/charts.h b/demos/chartviewer/charts.h
new file mode 100644
index 0000000..399bd08
--- /dev/null
+++ b/demos/chartviewer/charts.h
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the Qt Commercial Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#ifndef CHARTS_H
+#define CHARTS_H
+#include "window.h"
+#include <QList>
+#include <QString>
+#include <qchartglobal.h>
+
+QTCOMMERCIALCHART_BEGIN_NAMESPACE
+class QChart;
+QTCOMMERCIALCHART_END_NAMESPACE
+
+QTCOMMERCIALCHART_USE_NAMESPACE
+
+class Chart
+{
+public:
+    Chart();
+
+    virtual ~Chart();
+
+    virtual void initialize();
+    virtual QChart* createChart(const DataTable& table) = 0;
+    virtual QString name() = 0;
+    virtual QString category() = 0;
+    virtual QString subCategory() = 0;
+
+};
+
+namespace Charts
+{
+
+typedef QList<Chart*> ChartList;
+
+inline ChartList& chartList()
+{
+    static ChartList list;
+    return list;
+}
+
+inline bool findChart(Chart* chart)
+{
+    ChartList& list = chartList();
+    if (list.contains(chart)) {
+        return true;
+    }
+    foreach (Chart* item, list) {
+        if (item->name() == chart->name() && item->category() == chart->category() && item->subCategory() == chart->subCategory()) {
+            return true;
+        }
+    }
+    return false;
+}
+
+inline void addChart(Chart* chart)
+{
+    ChartList& list = chartList();
+    if (!findChart(chart)) {
+        list.append(chart);
+    }
+}
+}
+
+#define DECLARE_CHART(chartName) static chartName t;
+
+#endif
diff --git a/demos/chartviewer/charts/areachart.cpp b/demos/chartviewer/charts/areachart.cpp
new file mode 100644
index 0000000..c571fe7
--- /dev/null
+++ b/demos/chartviewer/charts/areachart.cpp
@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the Qt Commercial Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "charts.h"
+#include "qchart.h"
+#include "qareaseries.h"
+#include "qlineseries.h"
+
+class AreaChart: public Chart
+{
+public:
+
+    AreaChart(){
+        initialize();
+    }
+
+    QString name() { return QObject::tr("AreaChart"); }
+    QString category()  { return QObject::tr("XYSeries"); }
+    QString subCategory() { return QString::null; }
+
+    QChart* createChart(const DataTable& table)
+    {
+
+        QChart *chart = new QChart();
+        chart->setTitle("Area chart");
+
+        // The lower series initialized to zero values
+        QLineSeries *lowerSeries = 0;
+        QString name("Series ");
+        int nameIndex = 0;
+        for (int i(0); i < table.count(); i++) {
+            QLineSeries *upperSeries = new QLineSeries(chart);
+            for (int j(0); j < table[i].count(); j++) {
+                Data data = table[i].at(j);
+                if (lowerSeries) {
+                    const QList<QPointF>& points = lowerSeries->points();
+                    upperSeries->append(QPointF(j, points[i].y() + data.first.y()));
+                }
+                else
+                    upperSeries->append(QPointF(j, data.first.y()));
+            }
+            QAreaSeries *area = new QAreaSeries(upperSeries, lowerSeries);
+            area->setName(name + QString::number(nameIndex));
+            nameIndex++;
+            chart->addSeries(area);
+            chart->createDefaultAxes();
+            lowerSeries = upperSeries;
+        }
+
+        return chart;
+
+    }
+
+};
+
+DECLARE_CHART(AreaChart)
+
diff --git a/demos/chartviewer/charts/barchart.cpp b/demos/chartviewer/charts/barchart.cpp
new file mode 100644
index 0000000..1bbb4bd
--- /dev/null
+++ b/demos/chartviewer/charts/barchart.cpp
@@ -0,0 +1,60 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the Qt Commercial Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "charts.h"
+#include "qchart.h"
+#include "qstackedbarseries.h"
+#include "qbarset.h"
+
+class BarChart: public Chart
+{
+public:
+
+    BarChart(){
+        initialize();
+    }
+
+    QString name() { return QObject::tr("VerticalStackedBarChart"); }
+    QString category()  { return QObject::tr("BarSeries"); }
+    QString subCategory() { return QObject::tr("Vertical"); }
+
+    QChart* createChart(const DataTable& table)
+    {
+
+        QChart* chart = new QChart();
+
+        chart->setTitle("Bar chart");
+
+        QStackedBarSeries* series = new QStackedBarSeries(chart);
+        for (int i(0); i < table.count(); i++) {
+            QBarSet *set = new QBarSet("Bar set " + QString::number(i));
+            foreach (Data data, table[i])
+                *set << data.first.y();
+            series->append(set);
+        }
+        chart->addSeries(series);
+        chart->createDefaultAxes();
+        return chart;
+    }
+
+};
+
+DECLARE_CHART(BarChart)
+
diff --git a/demos/chartviewer/charts/charts.pri b/demos/chartviewer/charts/charts.pri
new file mode 100644
index 0000000..1f98762
--- /dev/null
+++ b/demos/chartviewer/charts/charts.pri
@@ -0,0 +1,4 @@
+INCLUDEPATH += $$PWD
+DEPENDPATH += $$PWD
+
+SOURCES+= linechart.cpp scatterchart.cpp splinechart.cpp piechart.cpp barchart.cpp areachart.cpp
\ No newline at end of file
diff --git a/demos/chartviewer/charts/linechart.cpp b/demos/chartviewer/charts/linechart.cpp
new file mode 100644
index 0000000..464be25
--- /dev/null
+++ b/demos/chartviewer/charts/linechart.cpp
@@ -0,0 +1,61 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the Qt Commercial Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "charts.h"
+#include "qchart.h"
+#include "qlineseries.h"
+
+class LineChart: public Chart
+{
+public:
+
+    LineChart(){
+        initialize();
+    }
+
+    QString name() { return QObject::tr("LineChart"); }
+    QString category()  { return QObject::tr("XYSeries"); }
+    QString subCategory() { return QString::null; }
+
+    QChart* createChart(const DataTable& table) {
+
+           QChart* chart = new QChart();
+           chart->setTitle("Line chart");
+
+           QString name("Series ");
+           int nameIndex = 0;
+           foreach (DataList list, table) {
+               QLineSeries *series = new QLineSeries(chart);
+               foreach (Data data, list)
+                   series->append(data.first);
+               series->setName(name + QString::number(nameIndex));
+               nameIndex++;
+               chart->addSeries(series);
+           }
+
+           chart->createDefaultAxes();
+
+           return chart;
+    }
+
+};
+
+DECLARE_CHART(LineChart)
+
diff --git a/demos/chartviewer/charts/piechart.cpp b/demos/chartviewer/charts/piechart.cpp
new file mode 100644
index 0000000..d8def3d
--- /dev/null
+++ b/demos/chartviewer/charts/piechart.cpp
@@ -0,0 +1,64 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the Qt Commercial Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "charts.h"
+#include "qchart.h"
+#include "qpieseries.h"
+
+class PieChart: public Chart
+{
+public:
+
+    PieChart(){
+        initialize();
+    }
+
+    QString name() { return QObject::tr("PieChart"); }
+    QString category()  { return QString::null; }
+    QString subCategory() { return QString::null; }
+
+    QChart* createChart(const DataTable& table)
+    {
+        QChart* chart = new QChart();
+        chart->setTitle("Pie chart");
+
+        qreal pieSize = 1.0 / table.count();
+        for (int i = 0; i < table.count(); i++) {
+            QPieSeries *series = new QPieSeries(chart);
+            foreach (Data data, table[i]) {
+                QPieSlice *slice = series->append(data.second, data.first.y());
+                if (data == table[i].first()) {
+                    slice->setLabelVisible();
+                    slice->setExploded();
+                }
+            }
+            qreal hPos = (pieSize / 2) + (i / (qreal) table.count());
+            series->setPieSize(pieSize);
+            series->setHorizontalPosition(hPos);
+            series->setVerticalPosition(0.5);
+            chart->addSeries(series);
+        }
+        return chart;
+    }
+
+};
+
+DECLARE_CHART(PieChart)
+
diff --git a/demos/chartviewer/charts/scatterchart.cpp b/demos/chartviewer/charts/scatterchart.cpp
new file mode 100644
index 0000000..c17e9b4
--- /dev/null
+++ b/demos/chartviewer/charts/scatterchart.cpp
@@ -0,0 +1,59 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the Qt Commercial Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "charts.h"
+#include "qchart.h"
+#include "qscatterseries.h"
+
+class ScatterChart: public Chart
+{
+public:
+
+    ScatterChart(){
+        initialize();
+    }
+
+    QString name() { return QObject::tr("ScatterChart"); }
+    QString category()  { return QObject::tr("XYSeries"); }
+    QString subCategory() { return QString::null; }
+
+    QChart* createChart(const DataTable& table)
+    {
+
+        QChart* chart = new QChart();
+        chart->setTitle("Scatter chart");
+        QString name("Series ");
+        int nameIndex = 0;
+        foreach (DataList list, table) {
+            QScatterSeries *series = new QScatterSeries(chart);
+            foreach (Data data, list)
+                series->append(data.first);
+            series->setName(name + QString::number(nameIndex));
+            nameIndex++;
+            chart->addSeries(series);
+        }
+        chart->createDefaultAxes();
+
+        return chart;
+    }
+
+};
+
+DECLARE_CHART(ScatterChart)
diff --git a/demos/chartviewer/charts/splinechart.cpp b/demos/chartviewer/charts/splinechart.cpp
new file mode 100644
index 0000000..aad1266
--- /dev/null
+++ b/demos/chartviewer/charts/splinechart.cpp
@@ -0,0 +1,60 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the Qt Commercial Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "charts.h"
+#include "qchart.h"
+#include "qsplineseries.h"
+
+class SplineChart: public Chart
+{
+public:
+
+    SplineChart(){
+        initialize();
+    }
+
+    QString name() { return QObject::tr("SplineChart"); }
+    QString category()  { return QObject::tr("XYSeries"); }
+    QString subCategory() { return QString::null; }
+
+    QChart* createChart(const DataTable& table)
+    {
+
+        QChart* chart = new QChart();
+
+        chart->setTitle("Spline chart");
+        QString name("Series ");
+        int nameIndex = 0;
+        foreach (DataList list, table) {
+            QSplineSeries *series = new QSplineSeries(chart);
+            foreach (Data data, list)
+                series->append(data.first);
+            series->setName(name + QString::number(nameIndex));
+            nameIndex++;
+            chart->addSeries(series);
+        }
+        chart->createDefaultAxes();
+        return chart;
+    }
+
+};
+
+DECLARE_CHART(SplineChart)
+
diff --git a/demos/chartviewer/chartviewer.pro b/demos/chartviewer/chartviewer.pro
index 3965fce..3eed466 100644
--- a/demos/chartviewer/chartviewer.pro
+++ b/demos/chartviewer/chartviewer.pro
@@ -1,5 +1,7 @@
 !include( ../demos.pri ):error( "Couldn't find the demos.pri file!" )
+include(charts/charts.pri)
 TARGET = chartviewer
 QT += opengl
-SOURCES = main.cpp window.cpp view.cpp     
-HEADERS = window.h view.h
\ No newline at end of file
+SOURCES += main.cpp window.cpp view.cpp charts.cpp     
+HEADERS += window.h view.h charts.h 
+
diff --git a/demos/chartviewer/window.cpp b/demos/chartviewer/window.cpp
index 7f94a94..9c7a1f8 100644
--- a/demos/chartviewer/window.cpp
+++ b/demos/chartviewer/window.cpp
@@ -20,6 +20,7 @@
 
 #include "window.h"
 #include "view.h"
+#include "charts.h"
 
 #include <QChartView>
 #include <QPieSeries>
@@ -100,31 +101,16 @@ Window::Window(QWidget* parent) :
         widget->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Maximum);
     }
 
-    QChart* chart;
 
-    chart = createAreaChart();
-    baseLayout->addItem(chart, 0, 0);
-    m_chartList << chart;
+    Charts::ChartList list = Charts::chartList();
 
-    chart = createBarChart(m_valueCount);
-    baseLayout->addItem(chart, 0, 1);
-    m_chartList << chart;
-
-    chart = createLineChart();
-    baseLayout->addItem(chart, 0, 2);
-    m_chartList << chart;
-
-    chart = createPieChart();
-    baseLayout->addItem(chart, 1, 0);
-    m_chartList << chart;
-
-    chart = createSplineChart();
-    baseLayout->addItem(chart, 1, 1);
-    m_chartList << chart;
-
-    chart = createScatterChart();
-    baseLayout->addItem(chart, 1, 2);
-    m_chartList << chart;
+    for(int i = 0 ; i < 6 ; ++i)
+    {
+        if(!(i<list.size()) || list.isEmpty()) break;
+        QChart* chart = list.at(i)->createChart(m_dataTable);
+        baseLayout->addItem(chart, i/3, i%3);
+        m_chartList << chart;
+    }
 
     m_form = new QGraphicsWidget();
     m_form->setLayout(baseLayout);
@@ -238,147 +224,6 @@ QComboBox* Window::createLegendBox() const
     return legendComboBox;
 }
 
-QChart* Window::createAreaChart() const
-{
-    QChart *chart = new QChart();
-//    chart->axisX()->setNiceNumbersEnabled(true);
-//    chart->axisY()->setNiceNumbersEnabled(true);
-    chart->setTitle("Area chart");
-
-    // The lower series initialized to zero values
-    QLineSeries *lowerSeries = 0;
-    QString name("Series ");
-    int nameIndex = 0;
-    for (int i(0); i < m_dataTable.count(); i++) {
-        QLineSeries *upperSeries = new QLineSeries(chart);
-        for (int j(0); j < m_dataTable[i].count(); j++) {
-            Data data = m_dataTable[i].at(j);
-            if (lowerSeries) {
-                const QList<QPointF>& points = lowerSeries->points();
-                upperSeries->append(QPointF(j, points[i].y() + data.first.y()));
-            }
-            else
-                upperSeries->append(QPointF(j, data.first.y()));
-        }
-        QAreaSeries *area = new QAreaSeries(upperSeries, lowerSeries);
-        area->setName(name + QString::number(nameIndex));
-        nameIndex++;
-        chart->addSeries(area);
-        chart->createDefaultAxes();
-        lowerSeries = upperSeries;
-    }
-
-    return chart;
-}
-
-QChart* Window::createBarChart(int valueCount) const
-{
-    Q_UNUSED(valueCount);
-    QChart* chart = new QChart();
-    //TODO: chart->axisX()->setNiceNumbersEnabled(true);
-    //TODO: chart->axisY()->setNiceNumbersEnabled(true);
-    chart->setTitle("Bar chart");
-
-    QStackedBarSeries* series = new QStackedBarSeries(chart);
-    for (int i(0); i < m_dataTable.count(); i++) {
-        QBarSet *set = new QBarSet("Bar set " + QString::number(i));
-        foreach (Data data, m_dataTable[i])
-            *set << data.first.y();
-        series->append(set);
-    }
-    chart->addSeries(series);
-    chart->createDefaultAxes();
-
-    return chart;
-}
-
-QChart* Window::createLineChart() const
-{
-    QChart* chart = new QChart();
-    //TODO: chart->axisX()->setNiceNumbersEnabled(true);
-    //TODO: chart->axisY()->setNiceNumbersEnabled(true);
-    chart->setTitle("Line chart");
-
-    QString name("Series ");
-    int nameIndex = 0;
-    foreach (DataList list, m_dataTable) {
-        QLineSeries *series = new QLineSeries(chart);
-        foreach (Data data, list)
-            series->append(data.first);
-        series->setName(name + QString::number(nameIndex));
-        nameIndex++;
-        chart->addSeries(series);
-    }
-    chart->createDefaultAxes();
-
-    return chart;
-}
-
-QChart* Window::createPieChart() const
-{
-    QChart* chart = new QChart();
-    chart->setTitle("Pie chart");
-
-    qreal pieSize = 1.0 / m_dataTable.count();
-    for (int i = 0; i < m_dataTable.count(); i++) {
-        QPieSeries *series = new QPieSeries(chart);
-        foreach (Data data, m_dataTable[i]) {
-            QPieSlice *slice = series->append(data.second, data.first.y());
-            if (data == m_dataTable[i].first()) {
-                slice->setLabelVisible();
-                slice->setExploded();
-            }
-        }
-        qreal hPos = (pieSize / 2) + (i / (qreal) m_dataTable.count());
-        series->setPieSize(pieSize);
-        series->setHorizontalPosition(hPos);
-        series->setVerticalPosition(0.5);
-        chart->addSeries(series);
-    }
-
-    return chart;
-}
-
-QChart* Window::createSplineChart() const
-{
-    QChart* chart = new QChart();
-    //TODO: chart->axisX()->setNiceNumbersEnabled(true);
-    //TODO: chart->axisY()->setNiceNumbersEnabled(true);
-    chart->setTitle("Spline chart");
-    QString name("Series ");
-    int nameIndex = 0;
-    foreach (DataList list, m_dataTable) {
-        QSplineSeries *series = new QSplineSeries(chart);
-        foreach (Data data, list)
-            series->append(data.first);
-        series->setName(name + QString::number(nameIndex));
-        nameIndex++;
-        chart->addSeries(series);
-    }
-    chart->createDefaultAxes();
-    return chart;
-}
-
-QChart* Window::createScatterChart() const
-{
-    QChart* chart = new QChart();
-    //TODO: chart->axisX()->setNiceNumbersEnabled(true);
-    //TODO: chart->axisY()->setNiceNumbersEnabled(true);
-    chart->setTitle("Scatter chart");
-    QString name("Series ");
-    int nameIndex = 0;
-    foreach (DataList list, m_dataTable) {
-        QScatterSeries *series = new QScatterSeries(chart);
-        foreach (Data data, list)
-            series->append(data.first);
-        series->setName(name + QString::number(nameIndex));
-        nameIndex++;
-        chart->addSeries(series);
-    }
-    chart->createDefaultAxes();
-    return chart;
-}
-
 void Window::updateUI()
 {
     bool opengl = m_openGLCheckBox->isChecked();
@@ -437,7 +282,7 @@ void Window::updateUI()
 
     QChart::AnimationOptions options(
         m_animatedComboBox->itemData(m_animatedComboBox->currentIndex()).toInt());
-    if (m_chartList.at(0)->animationOptions() != options) {
+    if (!m_chartList.isEmpty() && m_chartList.at(0)->animationOptions() != options) {
         foreach (QChart *chart, m_chartList)
             chart->setAnimationOptions(options);
     }
diff --git a/demos/chartviewer/window.h b/demos/chartviewer/window.h
index ff83712..2f8ffba 100644
--- a/demos/chartviewer/window.h
+++ b/demos/chartviewer/window.h
@@ -58,12 +58,6 @@ private:
     QComboBox* createAnimationBox() const;
     QComboBox* createLegendBox() const;
     void connectSignals();
-    QChart* createAreaChart() const;
-    QChart* createBarChart(int valueCount) const;
-    QChart* createPieChart() const;
-    QChart* createLineChart() const;
-    QChart* createSplineChart() const;
-    QChart* createScatterChart() const;
     void createProxyWidgets();
 
 protected: