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

.. only:: html

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

        Click :ref:`here <sphx_glr_download__auto_examples_plot_moving_nodes.py>`
        to download the full example code

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

.. _sphx_glr__auto_examples_plot_moving_nodes.py:


Editing network geometry: Nodes
===============================

On this example we show how to mode a node in the network and look into
what happens to the links.

.. GENERATED FROM PYTHON SOURCE LINES 8-22

.. code-block:: python


    ## Imports
    from uuid import uuid4
    from tempfile import gettempdir
    from os.path import join
    from aequilibrae.utils.create_example import create_example
    from shapely.geometry import Point
    import matplotlib.pyplot as plt

    # We create the example project inside our temp folder
    fldr = join(gettempdir(), uuid4().hex)

    project = create_example(fldr)








.. GENERATED FROM PYTHON SOURCE LINES 23-24

Let's move node one from the upper left corner of the image above, a bit to the left and to the bottom

.. GENERATED FROM PYTHON SOURCE LINES 24-35

.. code-block:: python


    # We also add the node we want to move
    all_nodes = project.network.nodes
    links = project.network.links
    node = all_nodes.get(1)
    new_geo = Point(node.geometry.x + 0.02, node.geometry.y - 0.02)
    node.geometry = new_geo

    # We can save changes for all nodes we have edited so far
    node.save()








.. GENERATED FROM PYTHON SOURCE LINES 36-39

If you want to show the path in Python
We do NOT recommend this, though....  It is very slow for real networks
We plot the entire network

.. GENERATED FROM PYTHON SOURCE LINES 39-54

.. code-block:: python

    links.refresh()
    curr = project.conn.cursor()
    curr.execute('Select link_id from links;')

    for lid in curr.fetchall():
        geo = links.get(lid[0]).geometry
        plt.plot(*geo.xy, color='blue')

    plt.plot(*node.geometry.xy, 'ro', color='black')

    plt.show()

    # Did you notice the links are matching the node?
    # Look at the original network and see how it used to look like




.. image-sg:: /_auto_examples/images/sphx_glr_plot_moving_nodes_001.png
   :alt: plot moving nodes
   :srcset: /_auto_examples/images/sphx_glr_plot_moving_nodes_001.png
   :class: sphx-glr-single-img


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

 Out:

 .. code-block:: none

    /home/runner/work/aequilibrae/aequilibrae/docs/source/examples/plot_moving_nodes.py:47: UserWarning: color is redundantly defined by the 'color' keyword argument and the fmt string "ro" (-> color='r'). The keyword argument will take precedence.
      plt.plot(*node.geometry.xy, 'ro', color='black')




.. GENERATED FROM PYTHON SOURCE LINES 55-57

.. code-block:: python


    project.close()








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

   **Total running time of the script:** ( 0 minutes  0.616 seconds)


.. _sphx_glr_download__auto_examples_plot_moving_nodes.py:


.. only :: html

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



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

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



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

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


.. only:: html

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

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