.. 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_edge_colorbar.py:
==================
Demo Edge Colorbar
==================
This example shows how to use one common colorbar for each row or column
of an image grid.
.. image:: /gallery/axes_grid1/images/sphx_glr_demo_edge_colorbar_001.png
:alt: demo edge colorbar
:class: sphx-glr-single-img
.. code-block:: default
import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid1 import AxesGrid
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_bottom_cbar(fig):
"""
A grid of 2x2 images with a colorbar for each column.
"""
grid = AxesGrid(fig, 121, # similar to subplot(121)
nrows_ncols=(2, 2),
axes_pad=0.10,
share_all=True,
label_mode="1",
cbar_location="bottom",
cbar_mode="edge",
cbar_pad=0.25,
cbar_size="15%",
direction="column"
)
Z, extent = get_demo_image()
cmaps = [plt.get_cmap("autumn"), plt.get_cmap("summer")]
for i in range(4):
im = grid[i].imshow(Z, extent=extent, interpolation="nearest",
cmap=cmaps[i//2])
if i % 2:
grid.cbar_axes[i//2].colorbar(im)
for cax in grid.cbar_axes:
cax.toggle_label(True)
cax.axis[cax.orientation].set_label("Bar")
# This affects all axes as share_all = True.
grid.axes_llc.set_xticks([-2, 0, 2])
grid.axes_llc.set_yticks([-2, 0, 2])
def demo_right_cbar(fig):
"""
A grid of 2x2 images. Each row has its own colorbar.
"""
grid = AxesGrid(fig, 122, # similar to subplot(122)
nrows_ncols=(2, 2),
axes_pad=0.10,
label_mode="1",
share_all=True,
cbar_location="right",
cbar_mode="edge",
cbar_size="7%",
cbar_pad="2%",
)
Z, extent = get_demo_image()
cmaps = [plt.get_cmap("spring"), plt.get_cmap("winter")]
for i in range(4):
im = grid[i].imshow(Z, extent=extent, interpolation="nearest",
cmap=cmaps[i//2])
if i % 2:
grid.cbar_axes[i//2].colorbar(im)
for cax in grid.cbar_axes:
cax.toggle_label(True)
cax.axis[cax.orientation].set_label('Foo')
# This affects all axes because we set share_all = True.
grid.axes_llc.set_xticks([-2, 0, 2])
grid.axes_llc.set_yticks([-2, 0, 2])
fig = plt.figure(figsize=(5.5, 2.5))
fig.subplots_adjust(left=0.05, right=0.93)
demo_bottom_cbar(fig)
demo_right_cbar(fig)
plt.show()
.. _sphx_glr_download_gallery_axes_grid1_demo_edge_colorbar.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_edge_colorbar.py `
.. container:: sphx-glr-download sphx-glr-download-jupyter
:download:`Download Jupyter notebook: demo_edge_colorbar.ipynb `
.. only:: html
.. rst-class:: sphx-glr-signature
Keywords: matplotlib code example, codex, python plot, pyplot
`Gallery generated by Sphinx-Gallery
`_