

.. _sphx_glr_gallery_axes_grid1_demo_axes_divider.py:


=================
Demo Axes Divider
=================





.. image:: /gallery/axes_grid1/images/sphx_glr_demo_axes_divider_001.png
    :align: center





.. code-block:: python

    import matplotlib.pyplot as plt


    def get_demo_image():
        import numpy as np
        from matplotlib.cbook import get_sample_data
        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)


    def demo_simple_image(ax):
        Z, extent = get_demo_image()

        im = ax.imshow(Z, extent=extent, interpolation="nearest")
        cb = plt.colorbar(im)
        plt.setp(cb.ax.get_yticklabels(), visible=False)


    def demo_locatable_axes_hard(fig1):

        from mpl_toolkits.axes_grid1 \
            import SubplotDivider, LocatableAxes, Size

        divider = SubplotDivider(fig1, 2, 2, 2, aspect=True)

        # axes for image
        ax = LocatableAxes(fig1, divider.get_position())

        # axes for colorbar
        ax_cb = LocatableAxes(fig1, divider.get_position())

        h = [Size.AxesX(ax),  # main axes
             Size.Fixed(0.05),  # padding, 0.1 inch
             Size.Fixed(0.2),  # colorbar, 0.3 inch
             ]

        v = [Size.AxesY(ax)]

        divider.set_horizontal(h)
        divider.set_vertical(v)

        ax.set_axes_locator(divider.new_locator(nx=0, ny=0))
        ax_cb.set_axes_locator(divider.new_locator(nx=2, ny=0))

        fig1.add_axes(ax)
        fig1.add_axes(ax_cb)

        ax_cb.axis["left"].toggle(all=False)
        ax_cb.axis["right"].toggle(ticks=True)

        Z, extent = get_demo_image()

        im = ax.imshow(Z, extent=extent, interpolation="nearest")
        plt.colorbar(im, cax=ax_cb)
        plt.setp(ax_cb.get_yticklabels(), visible=False)


    def demo_locatable_axes_easy(ax):
        from mpl_toolkits.axes_grid1 import make_axes_locatable

        divider = make_axes_locatable(ax)

        ax_cb = divider.new_horizontal(size="5%", pad=0.05)
        fig1 = ax.get_figure()
        fig1.add_axes(ax_cb)

        Z, extent = get_demo_image()
        im = ax.imshow(Z, extent=extent, interpolation="nearest")

        plt.colorbar(im, cax=ax_cb)
        ax_cb.yaxis.tick_right()
        for tl in ax_cb.get_yticklabels():
            tl.set_visible(False)
        ax_cb.yaxis.tick_right()


    def demo_images_side_by_side(ax):
        from mpl_toolkits.axes_grid1 import make_axes_locatable

        divider = make_axes_locatable(ax)

        Z, extent = get_demo_image()
        ax2 = divider.new_horizontal(size="100%", pad=0.05)
        fig1 = ax.get_figure()
        fig1.add_axes(ax2)

        ax.imshow(Z, extent=extent, interpolation="nearest")
        ax2.imshow(Z, extent=extent, interpolation="nearest")
        for tl in ax2.get_yticklabels():
            tl.set_visible(False)


    def demo():

        fig1 = plt.figure(1, (6, 6))
        fig1.clf()

        # PLOT 1
        # simple image & colorbar
        ax = fig1.add_subplot(2, 2, 1)
        demo_simple_image(ax)

        # PLOT 2
        # image and colorbar whose location is adjusted in the drawing time.
        # a hard way

        demo_locatable_axes_hard(fig1)

        # PLOT 3
        # image and colorbar whose location is adjusted in the drawing time.
        # a easy way

        ax = fig1.add_subplot(2, 2, 3)
        demo_locatable_axes_easy(ax)

        # PLOT 4
        # two images side by side with fixed padding.

        ax = fig1.add_subplot(2, 2, 4)
        demo_images_side_by_side(ax)

        plt.draw()
        plt.show()


    demo()

**Total running time of the script:** ( 0 minutes  0.641 seconds)



.. container:: sphx-glr-footer


  .. container:: sphx-glr-download

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



  .. container:: sphx-glr-download

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

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

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