Added BoxWhisker Example to Elements Tutorial

doc/Tutorials/Elements.ipynb

@@ -30,6 +30,7 @@
     "    <dt>[``Spread``](#Spread)</dt><dd>Just like ErrorBars, Spread is a collection of x-/y-coordinates with associated symmetric or asymmetric errors.</dd>\n",
     "  <dt>[``Bars``](#Bars)</dt><dd>Data collected and binned into categories.</dd>\n",
     "  <dt>[``Histogram``](#Histogram)</dt><dd>Data collected and binned in a continuous space using specified bin edges.</dd>\n",
+    "  <dt>[``BoxWhisker``](#BoxWhisker)</dt><dd>Distributions of data varying by 0-N key dimensions.</dd>\n",
     "  <dt>[``Scatter``](#Scatter)</dt><dd>Discontinuous collection of points indexed over a single dimension.</dd>\n",
     "  <dt>[``Points``](#Points)</dt><dd>Discontinuous collection of points indexed over two dimensions.</dd>\n",
     "  <dt>[``VectorField``](#VectorField)</dt><dd>Cyclic variable (and optional auxiliary data) distributed over two-dimensional space.</dd>\n",
@@ -327,6 +328,71 @@
     "         kdims=['Group', 'Category', 'Stack'], vdims=['Count'])"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### ``BoxWhisker`` <a id='BoxWhisker'></a>"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "The ``BoxWhisker`` Element allows representing distribution of data varying by 0-N key dimensions. To represent the distribution of a single variable we can create a BoxWhisker Element with no key dimensions and a single value dimension:"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [],
+   "source": [
+    "hv.BoxWhisker(np.random.randn(200), kdims=[], vdims=['Value'])"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "By adding a key dimension we can compare multiple distributions. Since the variables are randomly assigned we sort the Element first."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [],
+   "source": [
+    "hv.BoxWhisker((np.random.randint(0, 10, 200), np.random.randn(200)),\n",
+    "              kdims=['Variable'], vdims=['Value']).sort()"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "BoxWhisker Elements support any number of dimensions and may also be inverted. To style the boxes and whiskers supply boxprops, whiskerprops and flierprops."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [],
+   "source": [
+    "%%opts BoxWhisker [fig_size=200 invert_axes=True] (boxprops=dict(color='gray') whiskerprops=dict(color='indianred'))\n",
+    "groups = [chr(65+g) for g in np.random.randint(0, 3, 200)]\n",
+    "hv.BoxWhisker((groups, np.random.randint(0, 5, 200), np.random.randn(200)),\n",
+    "              kdims=['Group', 'Category'], vdims=['Value']).sort()"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -1390,7 +1456,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython2",
-   "version": "2.7.10"
+   "version": "2.7.11"
   }
  },
  "nbformat": 4,