.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "examples/05_solve_error.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

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

        :ref:`Go to the end <sphx_glr_download_examples_05_solve_error.py>`
        to download the full example code.

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

.. _sphx_glr_examples_05_solve_error.py:


5. Example: Failing Corner Cases
--------------------------------

Here we demonstrate that the solver PTRANS-I can fail to solve a given system.
A warning is given in that case and the output will be a nan-array.

.. GENERATED FROM PYTHON SOURCE LINES 8-19




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

 .. code-block:: none

    /home/docs/checkouts/readthedocs.org/user_builds/pentapy/envs/stable/lib/python3.11/site-packages/pentapy/core.py:88: UserWarning: pentapy: PTRANS-I not suitable for input-matrix.
      warnings.warn("pentapy: PTRANS-I not suitable for input-matrix.")
    [nan nan nan nan]






|

.. code-block:: Python


    import numpy as np

    import pentapy as pp

    # create a full pentadiagonal matrix
    mat = np.array([[3, 2, 1, 0], [-3, -2, 7, 1], [3, 2, -1, 5], [0, 1, 2, 3]])
    V = np.array([6, 3, 9, 6])
    # solve the LES with mat as a qudratic input matrix
    X = pp.solve(mat, V, is_flat=False, solver=1)
    print(X)


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

   **Total running time of the script:** (0 minutes 0.001 seconds)


.. _sphx_glr_download_examples_05_solve_error.py:

.. only:: html

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

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

      :download:`Download Jupyter notebook: 05_solve_error.ipynb <05_solve_error.ipynb>`

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

      :download:`Download Python source code: 05_solve_error.py <05_solve_error.py>`

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

      :download:`Download zipped: 05_solve_error.zip <05_solve_error.zip>`


.. only:: html

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

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