update

Author: Giulio Tesei

lectures/least_squares.ipynb

@@ -524,6 +524,33 @@
    "metadata": {},
    "source": [
     "## Interfacing Python and [R](https://www.r-project.org/about.html)\n",
+    "\n",
+    "This part of the Notebook requires the packages r-essentials and rpy2. To install them, issue the following commands in the terminal\n",
+    "\n",
+    "```bash\n",
+    "source activate LUcompute\n",
+    "conda install -c conda-forge r-essentials\n",
+    "conda install -c conda-forge rpy2\n",
+    "```\n",
+    "\n",
+    "It is also possible to install rpy2 using pip"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "!pip install rpy2"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
     "We load the extension [rpy2](https://rpy2.readthedocs.io/en/version_2.8.x/)"
    ]
   },