{
  "cells": [
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "\n# 3D voxel / volumetric plot\n\nDemonstrates plotting 3D volumetric objects with `.Axes3D.voxels`.\n"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "collapsed": false
      },
      "outputs": [],
      "source": [
        "import matplotlib.pyplot as plt\nimport numpy as np\n\n# prepare some coordinates\nx, y, z = np.indices((8, 8, 8))\n\n# draw cuboids in the top left and bottom right corners, and a link between\n# them\ncube1 = (x < 3) & (y < 3) & (z < 3)\ncube2 = (x >= 5) & (y >= 5) & (z >= 5)\nlink = abs(x - y) + abs(y - z) + abs(z - x) <= 2\n\n# combine the objects into a single boolean array\nvoxelarray = cube1 | cube2 | link\n\n# set the colors of each object\ncolors = np.empty(voxelarray.shape, dtype=object)\ncolors[link] = 'red'\ncolors[cube1] = 'blue'\ncolors[cube2] = 'green'\n\n# and plot everything\nax = plt.figure().add_subplot(projection='3d')\nax.voxels(voxelarray, facecolors=colors, edgecolor='k')\n\nplt.show()"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        ".. tags::\n   plot-type: 3D,\n   level: beginner\n\n"
      ]
    }
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