.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "_examples/00_grids/plot_grid1.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

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

        :ref:`Go to the end <sphx_glr_download__examples_00_grids_plot_grid1.py>`
        to download the full example code.

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

.. _sphx_glr__examples_00_grids_plot_grid1.py:


Creating and handling meshes
============================

Grids for CRTomo can be created in multiple ways. We now support two ways:

* using the :py:meth:`crtomo.crt_grid.create_surface_grid` function
* using the command line command :py:mod:`cr_trig_create`

This example only shows the usage of the former approach.

.. note::

    The CRTomo documentation is inconsistent in the use of the terms `mesh` and
    `grid`. Usually, a grid refers to a mesh with regularly spaced node
    locations in x and z direction.
    CRTomo also supports triangular meshes, which are still referred to as
    *grids* throughout the code and documentation.

.. GENERATED FROM PYTHON SOURCE LINES 24-25

The top level crtomo import suffices for most tasks

.. GENERATED FROM PYTHON SOURCE LINES 25-27

.. code-block:: Python

    import crtomo








.. GENERATED FROM PYTHON SOURCE LINES 28-29

Create a simple surface grid with this wrapper

.. GENERATED FROM PYTHON SOURCE LINES 29-42

.. code-block:: Python

    grid = crtomo.crt_grid.create_surface_grid(
       nr_electrodes=10,
       spacing=1.5,
    )
    grid.plot_grid()

    # number the electrodes (useful for numerical studies)
    grid.plot_grid(plot_electrode_numbers=True)

    # save this grid to disc
    grid.save_elem_file('elem.dat')
    grid.save_elec_file('elec.dat')




.. rst-class:: sphx-glr-horizontal


    *

      .. image-sg:: /_examples/00_grids/images/sphx_glr_plot_grid1_001.png
         :alt: plot grid1
         :srcset: /_examples/00_grids/images/sphx_glr_plot_grid1_001.png
         :class: sphx-glr-multi-img

    *

      .. image-sg:: /_examples/00_grids/images/sphx_glr_plot_grid1_002.png
         :alt: plot grid1
         :srcset: /_examples/00_grids/images/sphx_glr_plot_grid1_002.png
         :class: sphx-glr-multi-img


.. rst-class:: sphx-glr-script-out

 .. code-block:: none

    This grid was sorted using CutMcK. The nodes were resorted!
    Triangular grid found




.. GENERATED FROM PYTHON SOURCE LINES 43-44

The mesh can be read from disk:

.. GENERATED FROM PYTHON SOURCE LINES 44-48

.. code-block:: Python

    grid1 = crtomo.crt_grid('elem.dat', 'elec.dat')
    print(grid1)
    grid1.plot_grid()




.. image-sg:: /_examples/00_grids/images/sphx_glr_plot_grid1_003.png
   :alt: plot grid1
   :srcset: /_examples/00_grids/images/sphx_glr_plot_grid1_003.png
   :class: sphx-glr-single-img


.. rst-class:: sphx-glr-script-out

 .. code-block:: none

    This grid was sorted using CutMcK. The nodes were resorted!
    Triangular grid found
    CRMod/CTRomo grid instance
    number of elements: 1332
    number of nodes: 722
    number of electrodes: 10
    grid dimsensions: 
    X: -3.375 16.875 
    Z: -6.75 0.0 





.. GENERATED FROM PYTHON SOURCE LINES 49-50

Create a grid with layering

.. GENERATED FROM PYTHON SOURCE LINES 50-57

.. code-block:: Python

    grid = crtomo.crt_grid.create_surface_grid(
        nr_electrodes=10,
        spacing=1.5,
        lines=[0.5, 1],
    )
    print(grid)
    grid.plot_grid()



.. image-sg:: /_examples/00_grids/images/sphx_glr_plot_grid1_004.png
   :alt: plot grid1
   :srcset: /_examples/00_grids/images/sphx_glr_plot_grid1_004.png
   :class: sphx-glr-single-img


.. rst-class:: sphx-glr-script-out

 .. code-block:: none

    [[-3.375 -1.    11.   ]
     [-3.375 -0.5   11.   ]]
    [[16.875 -0.5   11.   ]
     [16.875 -1.    11.   ]]
    This grid was sorted using CutMcK. The nodes were resorted!
    Triangular grid found
    CRMod/CTRomo grid instance
    number of elements: 1428
    number of nodes: 770
    number of electrodes: 10
    grid dimsensions: 
    X: -3.375 16.875 
    Z: -6.75 0.0 






.. _sphx_glr_download__examples_00_grids_plot_grid1.py:

.. only:: html

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

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

      :download:`Download Jupyter notebook: plot_grid1.ipynb <plot_grid1.ipynb>`

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

      :download:`Download Python source code: plot_grid1.py <plot_grid1.py>`

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: plot_grid1.zip <plot_grid1.zip>`


.. only:: html

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

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