Address PR comments

Author: Leanne Guy

08_Interactive_Image_Visualization.ipynb

@@ -343,7 +343,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "The `data` object contains many columns. If no columns are specified, explicitly the first 2 columns are taken for x and y respectively by the `Scatter` element.  "
+    "The `data` object contains many columns. If no columns are specified, explicitly the first 2 columns are taken for x and y respectively by the [Scatter Element](https://holoviews.org/reference/elements/bokeh/Scatter.html)."
    ]
   },
   {
@@ -381,7 +381,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Next, let's create a layout of several plots. A `Layout` is a type of `Container` that can contain any HoloViews object. Other types of Containers that exist include Overlay, Gridspace, Dynamicmap, etc. See the Holoviews [Reference Gallery](http://holoviews.org/reference/index.html) for the full list of `Layouts` that can be created with Holoviews. See [Building Composite Objects](http://holoviews.org/user_guide/Building_Composite_Objects.html) for the full details about the ways Containers can be composed.\n",
+    "Next, let's create a layout of several plots. A `Layout` is a type of `Container` that can contain any HoloViews object. Other types of Containers that exist include `Overlay`, `Gridspace`, `Dynamicmap`, etc. See the Holoviews [Reference Gallery](http://holoviews.org/reference/index.html) for the full list of `Layouts` that can be created with Holoviews. See [Building Composite Objects](http://holoviews.org/user_guide/Building_Composite_Objects.html) for the full details about the ways Containers can be composed.\n",
     "\n",
     "The `+` operator is used to create a Layout. "
    ]
@@ -397,7 +397,7 @@
     "    title=\"Skyplot\", toolbar='above', tools = ['hover'], \n",
     "    height=350, width=350) \n",
     "\n",
-    "# Build a composite object using the `+` operator\n",
+    "# Construct a layout using the `+` operator\n",
     "skyplots = skyplot + \\\n",
     "           skyplot[59.67:60.07, -30.71:-29.78].opts(\n",
     "    title=\"Skyplot region\", tools=[]) + \\\n",
@@ -538,7 +538,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "%%opts Scatter [tools=['hover'], toolbar='above',height=400, width=400](color='grey')\n",
+    "# %%opts Scatter [tools=['hover'], toolbar='above',height=400, width=400](color='grey')\n",
     "hv.Scatter(data)"
    ]
   },
@@ -853,8 +853,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "print('The value at position (%.3f, %.3f) is %.3f' %\n",
-    "      (posxy.x, posxy.y, calexp.image.array[-int(posxy.y), int(posxy.x)]))"
+    "print('The scaled/raw value at position (%.3f, %.3f) is %.3f / %.3f' %\n",
+    "      (posxy.x, posxy.y, scaledImage[-int(posxy.y), int(posxy.x)], \n",
+    "       calexp.image.array[-int(posxy.y), int(posxy.x)]))"
    ]
   },
   {