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diff --git a/examples/widget/chart.cpp b/examples/widget/chart.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the documentation of QtDataVis3D module.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
+**     of its contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "chart.h"
+
+using namespace QtDataVis3D;
+
+const QString celsiusString = QString(QChar(0xB0)) + "C";
+
+ChartModifier::ChartModifier(Q3DBars *barchart)
+    : m_chart(barchart),
+      m_columnCount(21),
+      m_rowCount(21),
+      m_xRotation(0.0f),
+      m_yRotation(0.0f),
+      m_static(true),
+      m_barWidth(1.0f),
+      m_barDepth(1.0f),
+      m_barSpacingX(0.1f),
+      m_barSpacingZ(0.1f),
+      m_fontSize(20)
+{
+    // Don't set any styles or specifications, start from defaults
+}
+
+ChartModifier::~ChartModifier()
+{
+    delete m_chart;
+}
+
+void ChartModifier::start()
+{
+    if (m_static)
+        addDataSet();
+}
+
+void ChartModifier::restart(bool dynamicData)
+{
+    m_static = !dynamicData;
+
+    if (m_static) {
+        start();
+        // Set selection mode to zoom row
+        m_chart->setSelectionMode(ModeZoomRow);
+        m_chart->setFont(QFont("Times Roman", 20));
+    } else {
+        // Set up sample space; make it as deep as it's wide
+        m_chart->setupSampleSpace(m_columnCount, m_rowCount);
+        // Set selection mode to full
+        m_chart->setSelectionMode(ModeBarRowAndColumn);
+    }
+}
+
+void ChartModifier::addDataSet()
+{
+    // Prepare data to be visualized
+    // Use QDataSet adder
+
+    // Set window title
+    m_chart->setWindowTitle(QStringLiteral("Average temperatures in Oulu, Finland (2006-2012)"));
+
+    // Set up row and column names
+    QVector<QString> months;
+    months << "January" << "February" << "March" << "April" << "May" << "June" << "July" << "August" << "September" << "October" << "November" << "December";
+    QVector<QString> years;
+    years << "2006" << "2007" << "2008" << "2009" << "2010" << "2011" << "2012";
+
+    // Set up data
+    float temp[7][12] = {{-6.7f, -11.7f, -9.7f, 3.3f, 9.2f, 14.0f, 16.3f, 17.8f, 10.2f, 2.1f, -2.6f, -0.3f},    // 2006
+                         {-6.8f, -13.3f, 0.2f, 1.5f, 7.9f, 13.4f, 16.1f, 15.5f, 8.2f, 5.4f, -2.6f, -0.8f},      // 2007
+                         {-4.2f, -4.0f, -4.6f, 1.9f, 7.3f, 12.5f, 15.0f, 12.8f, 7.6f, 5.1f, -0.9f, -1.3f},      // 2008
+                         {-7.8f, -8.8f, -4.2f, 0.7f, 9.3f, 13.2f, 15.8f, 15.5f, 11.2f, 0.6f, 0.7f, -8.4f},      // 2009
+                         {-14.4f, -12.1f, -7.0f, 2.3f, 11.0f, 12.6f, 18.8f, 13.8f, 9.4f, 3.9f, -5.6f, -13.0f},  // 2010
+                         {-9.0f, -15.2f, -3.8f, 2.6f, 8.3f, 15.9f, 18.6f, 14.9f, 11.1f, 5.3f, 1.8f, -0.2f},     // 2011
+                         {-8.7f, -11.3f, -2.3f, 0.4f, 7.5f, 12.2f, 16.4f, 14.1f, 9.2f, 3.1f, 0.3f, -12.1f}};    // 2012
+
+    // Create data set
+    QDataSet *dataSet = new QDataSet();
+
+    // Add labels
+    dataSet->setLabels("Year", "Month", "Average temperature (" + celsiusString + ")",
+                       years, months);
+
+    // Create data rows
+    QDataRow *dataRow;
+    for (int year = 0; year < years.size(); year++) {
+        dataRow = new QDataRow(years.at(year));
+        // Create data items
+        for (int month = 0; month < months.size(); month++) {
+            // Add data to rows
+            dataRow->addItem(new QDataItem(temp[year][month], celsiusString));
+        }
+        // Add row to set
+        dataSet->addRow(dataRow);
+        // Get next pointer
+        dataRow++;
+    }
+
+    // Set up sample space based on prepared data
+    m_chart->setupSampleSpace(months.size(), years.size());
+
+    // Add data to chart
+    m_chart->addDataSet(dataSet);
+}
+
+void ChartModifier::addBars()
+{
+    QVector<float> data;
+    for (float i = 0; i < m_columnCount; i++)
+        data.append(((i + 1) / (float)m_columnCount) * (float)(rand() % 100));
+    m_chart->addDataRow(data);
+}
+
+void ChartModifier::changeStyle()
+{
+    static int model = 0;
+    switch (model) {
+    case 0:
+        m_chart->setBarType(Cylinders, false);
+        break;
+    case 1:
+        m_chart->setBarType(Cylinders, true);
+        break;
+    case 2:
+        m_chart->setBarType(Cones, false);
+        break;
+    case 3:
+        m_chart->setBarType(Cones, true);
+        break;
+    case 4:
+        m_chart->setBarType(Bars, false);
+        break;
+    case 5:
+        m_chart->setBarType(Bars, true);
+        break;
+    case 6:
+        m_chart->setBarType(Pyramids, false);
+        break;
+    case 7:
+        m_chart->setBarType(Pyramids, true);
+        break;
+    }
+    model++;
+    if (model > 7)
+        model = 0;
+}
+
+void ChartModifier::changePresetCamera()
+{
+    static int preset = PresetFrontLow;
+
+    m_chart->setCameraPreset((CameraPreset)preset);
+
+    if (++preset > PresetDirectlyAboveCCW45)
+        preset = PresetFrontLow;
+}
+
+void ChartModifier::changeTheme()
+{
+    static int theme = ThemeSystem;
+
+    m_chart->setTheme((ColorTheme)theme);
+
+    if (++theme > ThemeLight)
+        theme = ThemeSystem;
+}
+
+void ChartModifier::changeTransparency()
+{
+    static int transparency = TransparencyFromTheme;
+
+    m_chart->setLabelTransparency((LabelTransparency)transparency);
+
+    if (++transparency > TransparencyNoBackground)
+        transparency = TransparencyNone;
+}
+
+void ChartModifier::changeSelectionMode()
+{
+    static int selectionMode = ModeNone;
+
+    m_chart->setSelectionMode((SelectionMode)selectionMode);
+
+    if (++selectionMode > ModeZoomColumn)
+        selectionMode = ModeNone;
+}
+
+void ChartModifier::changeFont(const QFont &font)
+{
+    QFont newFont = font;
+    newFont.setPixelSize(m_fontSize);
+    m_chart->setFont(newFont);
+}
+
+void ChartModifier::changeFontSize(int fontsize)
+{
+    m_fontSize = fontsize;
+    m_chart->setFontSize((GLfloat)m_fontSize);
+}
+
+void ChartModifier::setGridEnabled(int enabled)
+{
+    m_chart->setGridEnabled((bool)enabled);
+}
+
+void ChartModifier::rotateX(int rotation)
+{
+    m_xRotation = rotation;
+    m_chart->setCameraPosition(m_xRotation, m_yRotation);
+}
+
+void ChartModifier::rotateY(int rotation)
+{
+    m_yRotation = rotation;
+    m_chart->setCameraPosition(m_xRotation, m_yRotation);
+}
+
+void ChartModifier::setSpecsX(int barwidth)
+{
+    m_barWidth = (float)barwidth / 100.0f;
+    m_chart->setBarSpecs(QSizeF(m_barWidth, m_barDepth), QSizeF(m_barSpacingX, m_barSpacingZ));
+}
+
+void ChartModifier::setSpecsZ(int bardepth)
+{
+    m_barDepth = (float)bardepth / 100.0f;
+    m_chart->setBarSpecs(QSizeF(m_barWidth, m_barDepth), QSizeF(m_barSpacingX, m_barSpacingZ));
+}
+
+void ChartModifier::setSpacingSpecsX(int spacing)
+{
+    m_barSpacingX = (float)spacing / 100.0f;
+    m_chart->setBarSpecs(QSizeF(m_barWidth, m_barDepth), QSizeF(m_barSpacingX, m_barSpacingZ));
+}
+
+void ChartModifier::setSpacingSpecsZ(int spacing)
+{
+    m_barSpacingZ = (float)spacing / 100.0f;
+    m_chart->setBarSpecs(QSizeF(m_barWidth, m_barDepth), QSizeF(m_barSpacingX, m_barSpacingZ));
+}
+
+void ChartModifier::setSampleCountX(int samples)
+{
+    m_columnCount = samples;
+    m_chart->setupSampleSpace(m_columnCount, m_rowCount);
+}
+
+void ChartModifier::setSampleCountZ(int samples)
+{
+    m_rowCount = samples;
+    m_chart->setupSampleSpace(m_columnCount, m_rowCount);
+}