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

.. only:: html

    .. meta::
        :keywords: codex

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

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

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

.. _sphx_glr_gallery_text_labels_and_annotations_text_rotation_relative_to_line.py:


==============================
Text Rotation Relative To Line
==============================

Text objects in matplotlib are normally rotated with respect to the
screen coordinate system (i.e., 45 degrees rotation plots text along a
line that is in between horizontal and vertical no matter how the axes
are changed).  However, at times one wants to rotate text with respect
to something on the plot.  In this case, the correct angle won't be
the angle of that object in the plot coordinate system, but the angle
that that object APPEARS in the screen coordinate system.  This angle
can be determined automatically by setting the parameter
*transform_rotates_text*, as shown in the example below.

.. GENERATED FROM PYTHON SOURCE LINES 16-43



.. image-sg:: /gallery/text_labels_and_annotations/images/sphx_glr_text_rotation_relative_to_line_001.png
   :alt: text rotation relative to line
   :srcset: /gallery/text_labels_and_annotations/images/sphx_glr_text_rotation_relative_to_line_001.png, /gallery/text_labels_and_annotations/images/sphx_glr_text_rotation_relative_to_line_001_2_00x.png 2.00x
   :class: sphx-glr-single-img





.. code-block:: Python


    import matplotlib.pyplot as plt
    import numpy as np

    fig, ax = plt.subplots()

    # Plot diagonal line (45 degrees)
    h = ax.plot(range(0, 10), range(0, 10))

    # set limits so that it no longer looks on screen to be 45 degrees
    ax.set_xlim([-10, 20])

    # Locations to plot text
    l1 = np.array((1, 1))
    l2 = np.array((5, 5))

    # Rotate angle
    angle = 45

    # Plot text
    th1 = ax.text(*l1, 'text not rotated correctly', fontsize=16,
                  rotation=angle, rotation_mode='anchor')
    th2 = ax.text(*l2, 'text rotated correctly', fontsize=16,
                  rotation=angle, rotation_mode='anchor',
                  transform_rotates_text=True)

    plt.show()


.. _sphx_glr_download_gallery_text_labels_and_annotations_text_rotation_relative_to_line.py:

.. only:: html

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

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

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

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

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


.. only:: html

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

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