.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "tutorial/09_trame/c_trame_scalars.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

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

        :ref:`Go to the end <sphx_glr_download_tutorial_09_trame_c_trame_scalars.py>`
        to download the full example code or to run this example in your browser via Binder

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

.. _sphx_glr_tutorial_09_trame_c_trame_scalars.py:


Control Scalar Array
~~~~~~~~~~~~~~~~~~~~

Extending our simple example to have a dropdown menu to control which
scalar array is used to color the mesh.

.. GENERATED FROM PYTHON SOURCE LINES 8-73

.. code-block:: Python


    import pyvista as pv
    from pyvista import examples
    from pyvista.trame.ui import plotter_ui
    from trame.app import get_server
    from trame.ui.vuetify3 import SinglePageLayout
    from trame.widgets import vuetify3

    pv.OFF_SCREEN = True

    server = get_server()
    state, ctrl = server.state, server.controller

    mesh = examples.download_antarctica_velocity()

    pl = pv.Plotter()
    actor = pl.add_mesh(mesh)
    pl.view_xy()


    @state.change("scalars")
    def set_scalars(scalars=mesh.active_scalars_name, **kwargs):
        actor.mapper.array_name = scalars
        actor.mapper.scalar_range = mesh.get_data_range(scalars)
        ctrl.view_update()


    @state.change("log_scale")
    def set_log_scale(log_scale=False, **kwargs):
        actor.mapper.lookup_table.log_scale = log_scale
        ctrl.view_update()


    with SinglePageLayout(server) as layout:
        with layout.toolbar:
            vuetify3.VSpacer()
            vuetify3.VCheckbox(
                label="Log Scale",
                v_model=("log_scale", False),
                hide_details=True,
                density="compact",
                outlined=True,
            )
            vuetify3.VSelect(
                label="Scalars",
                v_model=("scalars", mesh.active_scalars_name),
                items=("array_list", list(mesh.point_data.keys())),
                hide_details=True,
                density="compact",
                outlined=True,
                classes="pt-1 ml-2",
                style="max-width: 250px",
            )

        with layout.content:
            with vuetify3.VContainer(
                fluid=True,
                classes="pa-0 fill-height",
            ):
                # Use PyVista UI template for Plotters
                view = plotter_ui(pl)
                ctrl.view_update = view.update

    server.start()


.. GENERATED FROM PYTHON SOURCE LINES 74-81

.. raw:: html

    <center>
      <a target="_blank" href="https://colab.research.google.com/github/pyvista/pyvista-tutorial/blob/gh-pages/notebooks/tutorial/09_trame/c_trame_scalars.ipynb">
        <img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/ width="150px">
      </a>
    </center>


.. _sphx_glr_download_tutorial_09_trame_c_trame_scalars.py:

.. only:: html

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

    .. container:: binder-badge

      .. image:: images/binder_badge_logo.svg
        :target: https://mybinder.org/v2/gh/pyvista/pyvista-tutorial/gh-pages?urlpath=lab/tree/notebooks/tutorial/09_trame/c_trame_scalars.ipynb
        :alt: Launch binder
        :width: 150 px

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

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

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

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


.. only:: html

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

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