minor changes

visualization.ipynb

@@ -98,15 +98,19 @@
      "metadata": {},
      "source": [
       "Visualization\n",
-      "=============="
+      "==============\n",
+      "\n",
+      "I (Paul Ivanov) polled the class, and it seemed like people were unfamiliar with just basic plotting, so we started off with that."
      ]
     },
     {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
       "Basic Plotting\n",
-      "--------------\n"
+      "--------------\n",
+      "\n",
+      "I started off by explaining that, by default, matplotlib's pyplot interface is imported when we enable IPython's %pylab mode."
      ]
     },
     {
@@ -141,6 +145,13 @@
      "outputs": [],
      "prompt_number": 8
     },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "Here's how you can do that in your python scripts (without IPython's pylab mode)"
+     ]
+    },
     {
      "cell_type": "code",
      "collapsed": false,
@@ -156,6 +167,8 @@
      "cell_type": "markdown",
      "metadata": {},
      "source": [
+      "I opened up the Matplotlib website, and in particular, the Matplotlib Gallery...\n",
+      "\n",
       "http://matplotlib.org/gallery.html"
      ]
     },
@@ -178,6 +191,13 @@
      ],
      "prompt_number": 6
     },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "We grabbed a link of some example code we found in the gallery, just to play with it interactively\n"
+     ]
+    },
     {
      "cell_type": "code",
      "collapsed": false,
@@ -272,6 +292,13 @@
      ],
      "prompt_number": 38
     },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "R, G, B, A"
+     ]
+    },
     {
      "cell_type": "code",
      "collapsed": false,
@@ -325,13 +352,6 @@
      ],
      "prompt_number": 42
     },
-    {
-     "cell_type": "markdown",
-     "metadata": {},
-     "source": [
-      "R, G, B, A"
-     ]
-    },
     {
      "cell_type": "markdown",
      "metadata": {},