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Surface Example
===============
Using Q3DSurface in a widget application.
The surface example shows how to make a simple 3D surface graph using
Q3DSurface and combining the use of widgets for adjusting several adjustable
qualities. This example demonstrates the following features:
* How to set up a QItemModelSurfaceDataProxy with a QAbstractTableModel
backed by a numpy array.
* How to use QHeightMapSurfaceDataProxy for showing 3D height maps.
* Three different selection modes for studying the graph.
* Axis range usage for displaying selected portions of the graph.
* Changing theme.
* How to set a custom surface gradient.
For instructions about how to interact with the graph, see `this page`_.
.. image:: surface_mountain.png
:width: 400
:alt: Surface Example Screenshot
.. _`this page`: https://doc.qt.io/qt-6/qtdatavisualization-interacting-with-data.html
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