.. DO NOT EDIT. .. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY. .. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE: .. "gallery/axes_grid1/demo_axes_rgb.py" .. LINE NUMBERS ARE GIVEN BELOW. .. only:: html .. note:: :class: sphx-glr-download-link-note Click :ref:`here ` to download the full example code .. rst-class:: sphx-glr-example-title .. _sphx_glr_gallery_axes_grid1_demo_axes_rgb.py: ================================== Showing RGB channels using RGBAxes ================================== `~.axes_grid1.axes_rgb.RGBAxes` creates a layout of 4 Axes for displaying RGB channels: one large Axes for the RGB image and 3 smaller Axes for the R, G, B channels. .. GENERATED FROM PYTHON SOURCE LINES 10-73 .. 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') ax.spines[:].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() .. _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 ` .. container:: sphx-glr-download sphx-glr-download-jupyter :download:`Download Jupyter notebook: demo_axes_rgb.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature Keywords: matplotlib code example, codex, python plot, pyplot `Gallery generated by Sphinx-Gallery `_