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   "cell_type": "code",
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   "source": [
    "from k3d import K3D\n",
    "import numpy\n",
    "\n",
    "Nx = 60\n",
    "Ny = 60\n",
    "xmin, xmax = -3, 3\n",
    "ymin, ymax = -0, 3\n",
    "\n",
    "x = numpy.linspace(xmin, xmax, Nx)\n",
    "y = numpy.linspace(ymin, ymax, Ny)\n",
    "x, y = numpy.meshgrid(x, y, indexing='ij')\n",
    "\n",
    "heights = numpy.sin(x**2 + y**2)\n",
    "\n",
    "plot = K3D()\n",
    "plot += K3D.surface(heights, xmin=xmin, xmax=xmax, ymin=ymin, ymax=ymax)\n",
    "plot.display()"
   ]
  }
 ],
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