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

.. only:: html

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

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

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

.. _sphx_glr_auto_examples_plot_io.py:


Saving and loading splines
--------------------------

.. GENERATED FROM PYTHON SOURCE LINES 5-12

.. code-block:: Python


    import sys

    import numpy as np
    import splinebox.basis_functions
    import splinebox.spline_curves








.. GENERATED FROM PYTHON SOURCE LINES 13-14

We start by creating a random spline.

.. GENERATED FROM PYTHON SOURCE LINES 14-19

.. code-block:: Python


    spline = splinebox.spline_curves.Spline(
        M=5, basis_function=splinebox.basis_functions.B3(), closed=True, control_points=np.random.rand(5, 3)
    )








.. GENERATED FROM PYTHON SOURCE LINES 20-21

Let's save the spline:

.. GENERATED FROM PYTHON SOURCE LINES 21-24

.. code-block:: Python


    spline.to_json("spline.json")








.. GENERATED FROM PYTHON SOURCE LINES 25-26

Here is what the json file looks like:

.. GENERATED FROM PYTHON SOURCE LINES 26-30

.. code-block:: Python


    with open("spline.json") as f:
        sys.stdout.write(f.read())





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

 .. code-block:: none

    {
      "version": 1,
      "M": 5,
      "basis_function": "B3",
      "closed": true,
      "control_points": [
        [
          0.6482332700676897,
          0.6219790425278798,
          0.6402812948349823
        ],
        [
          0.3474754414536124,
          0.8873718303900037,
          0.758105176439606
        ],
        [
          0.7638183052289742,
          0.14387029477108992,
          0.08608177147253715
        ],
        [
          0.15435784797203222,
          0.9770239843520149,
          0.6392729372020461
        ],
        [
          0.4550373627182125,
          0.7373554517392681,
          0.023833299095512794
        ]
      ]
    }



.. GENERATED FROM PYTHON SOURCE LINES 31-32

Next, we will create a new spline based on the json file.

.. GENERATED FROM PYTHON SOURCE LINES 32-35

.. code-block:: Python


    loaded_spline = splinebox.spline_curves.Spline.from_json("spline.json")








.. GENERATED FROM PYTHON SOURCE LINES 36-37

You can also save multiple splines in a single json file.

.. GENERATED FROM PYTHON SOURCE LINES 37-47

.. code-block:: Python


    splines = []
    for _ in range(3):
        spline = splinebox.spline_curves.Spline(
            M=4, basis_function=splinebox.basis_functions.B3(), closed=True, control_points=np.random.rand(4, 1)
        )
        splines.append(spline)

    splinebox.spline_curves.splines_to_json("splines.json", splines)








.. GENERATED FROM PYTHON SOURCE LINES 48-49

Here is what a json file with multiple splines looks like:

.. GENERATED FROM PYTHON SOURCE LINES 49-53

.. code-block:: Python


    with open("splines.json") as f:
        sys.stdout.write(f.read())





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

 .. code-block:: none

    [
      {
        "version": 1,
        "M": 4,
        "basis_function": "B3",
        "closed": true,
        "control_points": [
          [
            0.8830180891072925
          ],
          [
            0.5073507813658725
          ],
          [
            0.04069425045657815
          ],
          [
            0.16518186963706172
          ]
        ]
      },
      {
        "version": 1,
        "M": 4,
        "basis_function": "B3",
        "closed": true,
        "control_points": [
          [
            0.8661653835014783
          ],
          [
            0.48644274926755404
          ],
          [
            0.7979819406923181
          ],
          [
            0.35395702090370795
          ]
        ]
      },
      {
        "version": 1,
        "M": 4,
        "basis_function": "B3",
        "closed": true,
        "control_points": [
          [
            0.17272652503663666
          ],
          [
            0.1953362691364916
          ],
          [
            0.07310620008138724
          ],
          [
            0.19270424813793552
          ]
        ]
      }
    ]



.. GENERATED FROM PYTHON SOURCE LINES 54-55

Lastly, we load multiple splines from a single json file.

.. GENERATED FROM PYTHON SOURCE LINES 55-58

.. code-block:: Python


    splines = splinebox.spline_curves.splines_from_json("splines.json")
    print(splines)




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

 .. code-block:: none

    [splinebox.spline_curves.Spline(M=4, basis_function=splinebox.basis_functions.B3(), closed=True, control_points=np.array([[0.88301809],
           [0.50735078],
           [0.04069425],
           [0.16518187]])), splinebox.spline_curves.Spline(M=4, basis_function=splinebox.basis_functions.B3(), closed=True, control_points=np.array([[0.86616538],
           [0.48644275],
           [0.79798194],
           [0.35395702]])), splinebox.spline_curves.Spline(M=4, basis_function=splinebox.basis_functions.B3(), closed=True, control_points=np.array([[0.17272653],
           [0.19533627],
           [0.0731062 ],
           [0.19270425]]))]





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

   **Total running time of the script:** (0 minutes 0.005 seconds)


.. _sphx_glr_download_auto_examples_plot_io.py:

.. only:: html

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

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

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

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

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

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

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


.. only:: html

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

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