{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# How to set landmarks?"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import geomstats.backend as gs\n",
    "\n",
    "from geomfum.dataset import NotebooksDataset\n",
    "from geomfum.shape import TriangleMesh"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "[Load a mesh](00_load_mesh_from_file.ipynb)."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "dataset = NotebooksDataset()\n",
    "mesh = TriangleMesh.from_file(dataset.get_filename(\"cat-00\"))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "[Landmarks](./06_landmarks.ipynb) are stored in `mesh` and can be set as following:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(4,)"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "mesh.set_landmarks(gs.array([3177, 7178, 6565, 5472]))\n",
    "\n",
    "mesh.landmark_indices.shape"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Further reading\n",
    "\n",
    "* [How to compute descriptors?](./descriptors.ipynb)\n",
    "\n",
    "* [How to compute a functional map?](./07_functional_map.ipynb)\n",
    "\n",
    "* [How to sample from a shape?](./sampler.ipynb)"
   ]
  }
 ],
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