{
  "cells": [
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "\n# Project contour profiles onto a graph\nDemonstrates displaying a 3D surface while also projecting contour 'profiles'\nonto the 'walls' of the graph.\nSee :doc:`contourf3d_2` for the filled version.\n"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "collapsed": false
      },
      "outputs": [],
      "source": [
        "import matplotlib.pyplot as plt\n\nfrom mpl_toolkits.mplot3d import axes3d\n\nax = plt.figure().add_subplot(projection='3d')\nX, Y, Z = axes3d.get_test_data(0.05)\n\n# Plot the 3D surface\nax.plot_surface(X, Y, Z, edgecolor='royalblue', lw=0.5, rstride=8, cstride=8,\n                alpha=0.3)\n\n# Plot projections of the contours for each dimension.  By choosing offsets\n# that match the appropriate axes limits, the projected contours will sit on\n# the 'walls' of the graph.\nax.contour(X, Y, Z, zdir='z', offset=-100, cmap='coolwarm')\nax.contour(X, Y, Z, zdir='x', offset=-40, cmap='coolwarm')\nax.contour(X, Y, Z, zdir='y', offset=40, cmap='coolwarm')\n\nax.set(xlim=(-40, 40), ylim=(-40, 40), zlim=(-100, 100),\n       xlabel='X', ylabel='Y', zlabel='Z')\n\nplt.show()"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        ".. tags::\n   plot-type: 3D,\n   component: axes,\n   level: intermediate\n\n"
      ]
    }
  ],
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      "codemirror_mode": {
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      "file_extension": ".py",
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      "name": "python",
      "nbconvert_exporter": "python",
      "pygments_lexer": "ipython3",
      "version": "3.13.2"
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