use new sfs.util.normalize_rows()

Author: fs446

doc/examples/wfs-referencing.ipynb

@@ -25,21 +25,6 @@
     "import sfs"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "# we test the usage of\n",
-    "# https://github.com/sfstoolbox/sfs-python/pull/194\n",
-    "def normalize_rows(x):\n",
-    "    \"\"\"Normalize a list of vectors.\"\"\"\n",
-    "    x = sfs.util.asarray_of_rows(x)\n",
-    "    return x / np.linalg.norm(x, axis=1, keepdims=True)\n",
-    "# to be removed once this is merged"
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -151,7 +136,7 @@
     "# reference contour is a circle with origin xs and radius |xs|\n",
     "xref_dist = np.linalg.norm(xs)\n",
     "# calc reference contour xref(x0), cf. [Firtha19, eq. (24), (31)]\n",
-    "xref = xs + xref_dist * normalize_rows(array.x - xs)\n",
+    "xref = xs + xref_dist * sfs.util.normalize_rows(array.x - xs)\n",
     "d, selection, secondary_source = sfs.fd.wfs.point_25d(\n",
     "   omega, array.x, array.n, xs, xref=xref)\n",
     "p_circ = sound_field(\n",
@@ -225,7 +210,7 @@
     "\n",
     "# plot stationary phase rays\n",
     "# one ray connects the virtual source with one activate loudspeaker\n",
-    "spa = array.x + 3*R * normalize_rows(array.x - xs)\n",
+    "spa = array.x + 3*R * sfs.util.normalize_rows(array.x - xs)\n",
     "plt.plot(\n",
     "   np.vstack((array.x[selection, 0], spa[selection, 0])),\n",
     "   np.vstack((array.x[selection, 1], spa[selection, 1])),\n",