Update example notebook (#311)

examples/notebook_workflow.ipynb

@@ -4,61 +4,56 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## Using `brainrender` in jupyter notebooks\n",
+    "# Using Notebooks\n",
     "\n",
-    "There's three ways that you can render a `brainrender` scene in Jupyter:\n",
+    "`brainrender` can be used with Jupyter notebooks in two ways:\n",
     "\n",
-    "1. You can have it pop up in a new window (recommended)\n",
-    "2. You can have embedded in the notebook\n",
-    "3. You can have it embedded a a ipywidget\n",
+    "1. you can **embed** a window with your rendered scene\n",
+    "2. you can have your scene be rendered in a **pop-up** window.\n",
     "\n",
-    "Note that option 2 and 3 don't support all of `brainrender`'s functionality.\n",
-    "As such option 1 is recommended.\n",
     "\n",
-    "If you get an error while running this notebook, restart the kernel and run only one\n",
-    "of the three rendering options. "
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "from brainrender import Scene\n",
-    "from vedo import embedWindow, Plotter, show  # <- this will be used to render an embedded scene \n",
-    "from itkwidgets import view"
+    "## Rendering your scene in a separate window\n",
+    "\n",
+    "If you want your scene to be rendered in a new window, then set this option before you create \n",
+    "your `Scene`.\n",
+    "\n",
+    "```python\n",
+    "import vedo\n",
+    "vedo.settings.default_backend= 'vtk'\n",
+    "```\n",
+    "After this everything will work exactly the same as usual, and you will have access to all of brainrender's features. \n"
    ]
   },
   {
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "### Render as popup"
+    "### To visualise primary visual cortex in the Allen Adult Mouse Brain Atlas:"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [],
    "source": [
-    "embedWindow(None)  # <- this will make your scene popup\n",
+    "import vedo\n",
+    "vedo.settings.default_backend= 'vtk'\n",
     "\n",
     "from brainrender import Scene\n",
+    "popup_scene = Scene(atlas_name='allen_mouse_50um', title='popup')\n",
     "\n",
-    "popup_scene = Scene(title='popup')\n",
-    "\n",
-    "popup_scene.add_brain_region('MOs')\n",
+    "popup_scene.add_brain_region('VISp')\n",
     "\n",
-    "popup_scene.render()  # press 'Esc' to close!!"
+    "popup_scene.render()  # press 'Esc' to close"
    ]
   },
   {
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "### Embedded scene"
+    "## Embedding the scene\n",
+    "\n"
    ]
   },
   {
@@ -119,7 +114,7 @@
  "metadata": {
   "file_extension": ".py",
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -133,7 +128,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.4"
+   "version": "3.10.13"
   },
   "mimetype": "text/x-python",
   "name": "python",