interactive widgets can't work in pyodide environment. Remove them and update the notebook to suit.

Author: petercorke

.github/workflows/docs.yml

@@ -46,7 +46,7 @@ jobs:
 
       - name: Build JupyterLite site
         run: |
-          pip install jupyterlite-core jupyterlite-pyodide-kernel jupyter-server ipympl
+          pip install jupyterlite-core jupyterlite-pyodide-kernel jupyter-server
           cd lite && jupyter lite build --output-dir ../docs/build/html/lite
 
       - uses: actions/upload-pages-artifact@v3

lite/files/intro.ipynb

@@ -30,7 +30,6 @@
     "\n",
     "    await micropip.install([\n",
     "        \"opencv-python\",\n",
-    "        \"ipympl\",\n",
     "        \"spatialmath-python\",\n",
     "        \"pgraph-python\",\n",
     "        \"ansitable\",\n",
@@ -61,7 +60,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "%matplotlib widget\n",
+    "%matplotlib inline\n",
     "import matplotlib.pyplot as plt\n",
     "\n",
     "from machinevisiontoolbox import Image\n",
@@ -88,6 +87,16 @@
     "mona.disp()"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "73b8a6e9",
+   "metadata": {},
+   "source": [
+    "<div class=\"alert alert-info\">\n",
+    "<strong>Note:</strong> In this environment it is not possible to examine pixel values by hovering the mouse cursor over an image.  This a limitation of Matplotlib in a Pyodide Web Worker.\n",
+    "</div>"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "43219088",