{
  "cells": [
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "\n# Per-row or per-column colorbars\n\nThis example shows how to use one common colorbar for each row or column\nof an image grid.\n"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
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      "source": [
        "import matplotlib.pyplot as plt\n\nfrom matplotlib import cbook\nfrom mpl_toolkits.axes_grid1 import AxesGrid\n\n\ndef get_demo_image():\n    z = cbook.get_sample_data(\"axes_grid/bivariate_normal.npy\")  # 15x15 array\n    return z, (-3, 4, -4, 3)\n\n\ndef demo_bottom_cbar(fig):\n    \"\"\"\n    A grid of 2x2 images with a colorbar for each column.\n    \"\"\"\n    grid = AxesGrid(fig, 121,  # similar to subplot(121)\n                    nrows_ncols=(2, 2),\n                    axes_pad=0.10,\n                    share_all=True,\n                    label_mode=\"1\",\n                    cbar_location=\"bottom\",\n                    cbar_mode=\"edge\",\n                    cbar_pad=0.25,\n                    cbar_size=\"15%\",\n                    direction=\"column\"\n                    )\n\n    Z, extent = get_demo_image()\n    cmaps = [\"autumn\", \"summer\"]\n    for i in range(4):\n        im = grid[i].imshow(Z, extent=extent, cmap=cmaps[i//2])\n        if i % 2:\n            grid.cbar_axes[i//2].colorbar(im)\n\n    for cax in grid.cbar_axes:\n        cax.axis[cax.orientation].set_label(\"Bar\")\n\n    # This affects all Axes as share_all = True.\n    grid.axes_llc.set_xticks([-2, 0, 2])\n    grid.axes_llc.set_yticks([-2, 0, 2])\n\n\ndef demo_right_cbar(fig):\n    \"\"\"\n    A grid of 2x2 images. Each row has its own colorbar.\n    \"\"\"\n    grid = AxesGrid(fig, 122,  # similar to subplot(122)\n                    nrows_ncols=(2, 2),\n                    axes_pad=0.10,\n                    label_mode=\"1\",\n                    share_all=True,\n                    cbar_location=\"right\",\n                    cbar_mode=\"edge\",\n                    cbar_size=\"7%\",\n                    cbar_pad=\"2%\",\n                    )\n    Z, extent = get_demo_image()\n    cmaps = [\"spring\", \"winter\"]\n    for i in range(4):\n        im = grid[i].imshow(Z, extent=extent, cmap=cmaps[i//2])\n        if i % 2:\n            grid.cbar_axes[i//2].colorbar(im)\n\n    for cax in grid.cbar_axes:\n        cax.axis[cax.orientation].set_label('Foo')\n\n    # This affects all Axes because we set share_all = True.\n    grid.axes_llc.set_xticks([-2, 0, 2])\n    grid.axes_llc.set_yticks([-2, 0, 2])\n\n\nfig = plt.figure()\n\ndemo_bottom_cbar(fig)\ndemo_right_cbar(fig)\n\nplt.show()"
      ]
    }
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