.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "gallery/scene/surface_plot.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download_gallery_scene_surface_plot.py>`
        to download the full example code

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_gallery_scene_surface_plot.py:


Draw a SurfacePlot
==================

This example demonstrates the use of the SurfacePlot visual.

.. GENERATED FROM PYTHON SOURCE LINES 13-59



.. image-sg:: /gallery/scene/images/sphx_glr_surface_plot_001.png
   :alt: surface plot
   :srcset: /gallery/scene/images/sphx_glr_surface_plot_001.png
   :class: sphx-glr-single-img





.. code-block:: Python


    import sys
    import numpy as np

    from vispy import app, scene
    from vispy.util.filter import gaussian_filter


    canvas = scene.SceneCanvas(keys='interactive', bgcolor='w')
    view = canvas.central_widget.add_view()
    view.camera = scene.TurntableCamera(up='z', fov=60)

    # Simple surface plot example
    # x, y values are not specified, so assumed to be 0:50
    z = np.random.normal(size=(250, 250), scale=200)
    z[100, 100] += 50000
    z = gaussian_filter(z, (10, 10))
    p1 = scene.visuals.SurfacePlot(z=z, color=(0.3, 0.3, 1, 1))
    p1.transform = scene.transforms.MatrixTransform()
    p1.transform.scale([1/249., 1/249., 1/249.])
    p1.transform.translate([-0.5, -0.5, 0])

    view.add(p1)

    # p1._update_data()  # cheating.
    # cf = scene.filters.ZColormapFilter('fire', zrange=(z.max(), z.min()))
    # p1.attach(cf)


    xax = scene.Axis(pos=[[-0.5, -0.5], [0.5, -0.5]], tick_direction=(0, -1),
                     font_size=16, axis_color='k', tick_color='k', text_color='k',
                     parent=view.scene)
    xax.transform = scene.STTransform(translate=(0, 0, -0.2))

    yax = scene.Axis(pos=[[-0.5, -0.5], [-0.5, 0.5]], tick_direction=(-1, 0),
                     font_size=16, axis_color='k', tick_color='k', text_color='k',
                     parent=view.scene)
    yax.transform = scene.STTransform(translate=(0, 0, -0.2))

    # Add a 3D axis to keep us oriented
    axis = scene.visuals.XYZAxis(parent=view.scene)

    if __name__ == '__main__':
        canvas.show()
        if sys.flags.interactive == 0:
            app.run()


.. rst-class:: sphx-glr-timing

   **Total running time of the script:** (0 minutes 2.247 seconds)


.. _sphx_glr_download_gallery_scene_surface_plot.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: surface_plot.ipynb <surface_plot.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: surface_plot.py <surface_plot.py>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_