

.. _sphx_glr_gallery_axes_grid1_inset_locator_demo2.py:


===================
Inset Locator Demo2
===================





.. image:: /gallery/axes_grid1/images/sphx_glr_inset_locator_demo2_001.png
    :align: center





.. code-block:: python

    import matplotlib.pyplot as plt

    from mpl_toolkits.axes_grid1.inset_locator import zoomed_inset_axes
    from mpl_toolkits.axes_grid1.inset_locator import mark_inset

    import numpy as np


    def get_demo_image():
        from matplotlib.cbook import get_sample_data
        import numpy as np
        f = get_sample_data("axes_grid/bivariate_normal.npy", asfileobj=False)
        z = np.load(f)
        # z is a numpy array of 15x15
        return z, (-3, 4, -4, 3)

    fig, ax = plt.subplots(figsize=[5, 4])

    # prepare the demo image
    Z, extent = get_demo_image()
    Z2 = np.zeros([150, 150], dtype="d")
    ny, nx = Z.shape
    Z2[30:30 + ny, 30:30 + nx] = Z

    # extent = [-3, 4, -4, 3]
    ax.imshow(Z2, extent=extent, interpolation="nearest",
              origin="lower")

    axins = zoomed_inset_axes(ax, 6, loc=1)  # zoom = 6
    axins.imshow(Z2, extent=extent, interpolation="nearest",
                 origin="lower")

    # sub region of the original image
    x1, x2, y1, y2 = -1.5, -0.9, -2.5, -1.9
    axins.set_xlim(x1, x2)
    axins.set_ylim(y1, y2)
    # fix the number of ticks on the inset axes
    axins.yaxis.get_major_locator().set_params(nbins=7)
    axins.xaxis.get_major_locator().set_params(nbins=7)

    plt.xticks(visible=False)
    plt.yticks(visible=False)

    # draw a bbox of the region of the inset axes in the parent axes and
    # connecting lines between the bbox and the inset axes area
    mark_inset(ax, axins, loc1=2, loc2=4, fc="none", ec="0.5")

    plt.draw()
    plt.show()

**Total running time of the script:** ( 0 minutes  0.127 seconds)



.. container:: sphx-glr-footer


  .. container:: sphx-glr-download

     :download:`Download Python source code: inset_locator_demo2.py <inset_locator_demo2.py>`



  .. container:: sphx-glr-download

     :download:`Download Jupyter notebook: inset_locator_demo2.ipynb <inset_locator_demo2.ipynb>`

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

    `Generated by Sphinx-Gallery <https://sphinx-gallery.readthedocs.io>`_
