.. only:: html

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

        Click :ref:`here <sphx_glr_download_gallery_axes_grid1_demo_axes_rgb.py>`     to download the full example code
    .. rst-class:: sphx-glr-example-title

    .. _sphx_glr_gallery_axes_grid1_demo_axes_rgb.py:


=============
Demo Axes RGB
=============

RGBAxes to show RGB composite images.



.. rst-class:: sphx-glr-horizontal


    *

      .. image:: /gallery/axes_grid1/images/sphx_glr_demo_axes_rgb_001.png
          :alt: demo axes rgb
          :class: sphx-glr-multi-img

    *

      .. image:: /gallery/axes_grid1/images/sphx_glr_demo_axes_rgb_002.png
          :alt: demo axes rgb
          :class: sphx-glr-multi-img






.. code-block:: default


    import numpy as np
    from matplotlib import cbook
    import matplotlib.pyplot as plt
    from mpl_toolkits.axes_grid1.axes_rgb import make_rgb_axes, RGBAxes


    def get_rgb():
        Z = cbook.get_sample_data("axes_grid/bivariate_normal.npy", np_load=True)
        Z[Z < 0] = 0.
        Z = Z / Z.max()

        R = Z[:13, :13]
        G = Z[2:, 2:]
        B = Z[:13, 2:]

        return R, G, B


    def make_cube(r, g, b):
        ny, nx = r.shape
        R = np.zeros((ny, nx, 3))
        R[:, :, 0] = r
        G = np.zeros_like(R)
        G[:, :, 1] = g
        B = np.zeros_like(R)
        B[:, :, 2] = b

        RGB = R + G + B

        return R, G, B, RGB


    def demo_rgb1():
        fig = plt.figure()
        ax = RGBAxes(fig, [0.1, 0.1, 0.8, 0.8], pad=0.0)
        r, g, b = get_rgb()
        ax.imshow_rgb(r, g, b)


    def demo_rgb2():
        fig, ax = plt.subplots()
        ax_r, ax_g, ax_b = make_rgb_axes(ax, pad=0.02)

        r, g, b = get_rgb()
        im_r, im_g, im_b, im_rgb = make_cube(r, g, b)
        ax.imshow(im_rgb)
        ax_r.imshow(im_r)
        ax_g.imshow(im_g)
        ax_b.imshow(im_b)

        for ax in fig.axes:
            ax.tick_params(axis='both', direction='in')
            for sp1 in ax.spines.values():
                sp1.set_color("w")
            for tick in ax.xaxis.get_major_ticks() + ax.yaxis.get_major_ticks():
                tick.tick1line.set_markeredgecolor("w")
                tick.tick2line.set_markeredgecolor("w")


    demo_rgb1()
    demo_rgb2()

    plt.show()


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

   **Total running time of the script:** ( 0 minutes  1.081 seconds)


.. _sphx_glr_download_gallery_axes_grid1_demo_axes_rgb.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: demo_axes_rgb.py <demo_axes_rgb.py>`



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

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


.. only:: html

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

    Keywords: matplotlib code example, codex, python plot, pyplot
    `Gallery generated by Sphinx-Gallery
    <https://sphinx-gallery.readthedocs.io>`_