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Bike Speed versus Grade.ipynb

@@ -8,7 +8,7 @@
     "\n",
     "Like most people, I bike slower when I'm going up a steep hill than on a flat road. But how much slower?\n",
     "To answer that, I downloaded data on my past rides \n",
-    "from [Strava](https://www.strava.com/athletes/575579) and manipulated the `data` to create two lists:\n",
+    "from [Strava](https://www.strava.com/athletes/575579) and manipulated the `data` to create two lists: \n",
     "\n",
     "- `X`: the *grade* of each ride, in feet of ascent per mile. \n",
     "- `Y`: the *speed* of each (corresponding) ride, in miles per hour.\n",
@@ -18,16 +18,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
-   "metadata": {
-    "collapsed": false
-   },
+   "execution_count": 2,
+   "metadata": {},
    "outputs": [
     {
      "data": {
-      "image/png": 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truncated
+      "image/png": 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truncated
       "text/plain": [
-       "<matplotlib.figure.Figure at 0x115deb278>"
+       "<matplotlib.figure.Figure at 0x1028a2be0>"
       ]
      },
      "metadata": {},
@@ -65,16 +63,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
-   "metadata": {
-    "collapsed": false
-   },
+   "execution_count": 4,
+   "metadata": {},
    "outputs": [
     {
      "data": {
-      "image/png": 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truncated
+      "image/png": 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truncated
       "text/plain": [
-       "<matplotlib.figure.Figure at 0x119d56550>"
+       "<matplotlib.figure.Figure at 0x108dd82e8>"
       ]
      },
      "metadata": {},
@@ -90,7 +86,7 @@
     "F = poly(X, Y, 2) # defines y = F(x); x in ft/mile, y in mph\n",
     "\n",
     "def show(X, Y, F=F): \n",
-    "    plt.rcParams[\"figure.figsize\"] = (10, 6)\n",
+    "    plt.rcParams[\"figure.figsize\"] = (12, 8)\n",
     "    plt.style.use('fivethirtyeight')\n",
     "    plt.plot(X, Y, 'o')\n",
     "    X1 = list(range(int(max(X))))\n",
@@ -117,7 +113,7 @@
    "cell_type": "code",
    "execution_count": 3,
    "metadata": {
-    "collapsed": false
+    "collapsed": true
    },
    "outputs": [],
    "source": [
@@ -130,20 +126,18 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "For example, to get to  Pescadero, I can take the flatter coast route, or follow the creek, saving 4 miles of distance, but adding 300 ft of climbing:"
+    "For example, to get to  Pescadero from La Honda, I could take the flatter [coast route](https://www.google.com/maps/dir/La+Honda,+California/Pescadero,+California/@37.2905834,-122.3896683,12z/data=!4m19!4m18!1m10!1m1!1s0x808faed4dc6265bd:0x51a109d3306a7219!2m2!1d-122.274227!2d37.3190255!3m4!1m2!1d-122.4039496!2d37.3116594!3s0x808f062b7d7585e7:0x942480c22f110b74!1m5!1m1!1s0x808f00b4b613c4c1:0x43c609077878b77!2m2!1d-122.3830152!2d37.2551636!3e1), or the shorter [creek route](https://www.google.com/maps/dir/La+Honda,+California/Pescadero,+California/@37.2905834,-122.3896683,12z/data=!4m19!4m18!1m10!1m1!1s0x808faed4dc6265bd:0x51a109d3306a7219!2m2!1d-122.274227!2d37.3190255!3m4!1m2!1d-122.3658887!2d37.2538867!3s0x808f00acf265bd43:0xb7e2a0c9ee355c3a!1m5!1m1!1s0x808f00b4b613c4c1:0x43c609077878b77!2m2!1d-122.3830152!2d37.2551636!3e1):"
    ]
   },
   {
    "cell_type": "code",
    "execution_count": 4,
-   "metadata": {
-    "collapsed": false
-   },
+   "metadata": {},
    "outputs": [
     {
      "data": {
       "text/plain": [
-       "(157.39103492491944, 149.35787723449531, 8.0331576904241331)"
+       "6.7314081227852185"
       ]
      },
      "execution_count": 4,
@@ -152,17 +146,17 @@
     }
    ],
    "source": [
-    "coast = duration(33.4, 2201)\n",
-    "creek = duration(29.4, 2520)\n",
+    "coast = duration(15.7, 344)\n",
+    "creek = duration(13.5, 735)\n",
     "\n",
-    "coast, creek, coast - creek"
+    "coast - creek"
    ]
   },
   {
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "The coast route  takes about 8 minutes longer. Good to know, but other factors are probably more important in making the choice."
+    "This says the coast route takes 6.7 minutes longer. Good to know, but other factors are probably more important in making the choice."
    ]
   }
  ],
@@ -182,7 +176,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.0"
+   "version": "3.5.3"
   }
  },
  "nbformat": 4,