221228c

Author: josechval

07_gestion_y_analisis_de_datos_de_numpy.ipynb

@@ -1061,6 +1061,60 @@
     "np.all(booleano[2])"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Funciones de búsqueda y orden."
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### La función ```np.where()```.\n",
+    "\n",
+    "https://numpy.org/doc/stable/reference/generated/numpy.where.html"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "numeros = np.array([[1.43, -1, 45.9999, -3.41],\n",
+    "                   [np.inf, -np.inf, np.inf, np.inf],\n",
+    "                   [np.nan, 13.45, 11, 21]])"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "np.where(numeros == np.inf)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "numeros[np.where(numeros == np.inf)]"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "np.where(numeros == np.inf, 1, numeros + 1)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},