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-Chapter 4 - Add a QTableView
-=============================
-
-Now that you have a QMainWindow, you can include a centralWidget to your
-interface. Usually, a QWidget is used to display data in most data-driven
-applications. Use a table view to display your data.
-
-The first step is to add a horizontal layout with just a QTableView. You
-can create a QTableView object and place it inside a QHBoxLayout. Once the
-QWidget is properly built, pass the object to the QMainWindow as its central
-widget.
-
-Remember that a QTableView needs a model to display information. In this case,
-you can use a QAbstractTableModel instance.
-
-.. note:: You could also use the default item model that comes with a
-   QTableWidget instead. QTableWidget is a convenience class that reduces
-   your codebase considerably as you don't need to implement a data model.
-   However, it's less flexible than a QTableView, as QTableWidget cannot be
-   used with just any data. For more insight about Qt's model-view framework,
-   refer to the
-   `Model View Programming <http://doc.qt.io/qt-5/model-view-programming.html>`
-   documentation.
-
-Implementing the model for your QTableView, allows you to:
-- set the headers,
-- manipulate the formats of the cell values (remember we have UTC time and float
-numbers),
-- set style properties like text alignment,
-- and even set color properties for the cell or its content.
-
-To subclass the QAbstractTable, you must reimplement its virtual methods,
-rowCount(), columnCount(), and data(). This way, you can ensure that the data
-is handled properly. In addition, reimplement the headerData() method to
-provide the header information to the view.
-
-Here is a script that implements the CustomTableModel:
-
-.. literalinclude:: datavisualize4/table_model.py
-   :language: python
-   :linenos:
-   :lines: 40-
-
-Now, create a QWidget that has a QTableView, and connect it to your
-CustomTableModel.
-
-.. literalinclude:: datavisualize4/main_widget.py
-   :language: python
-   :linenos:
-   :emphasize-lines: 12-17
-   :lines: 40-
-
-You also need minor changes to the :code:`main_window.py` and
-:code:`main.py` from chapter 3 to include the Widget inside the
-MainWindow.
-
-In the following snippets you'll see those changes highlighted:
-
-.. literalinclude:: datavisualize4/main_window.py
-   :language: python
-   :linenos:
-   :emphasize-lines: 8,11
-
-.. literalinclude:: datavisualize4/main.py
-   :language: python
-   :linenos:
-   :emphasize-lines: 46-47
-