Edits to climatology doc (#361)

Author: dcherian

docs/source/user-stories/climatology.ipynb

@@ -61,7 +61,9 @@
    "source": [
     "To account for Feb-29 being present in some years, we'll construct a time vector to group by as \"mmm-dd\" string.\n",
     "\n",
-    "For more options, see https://strftime.org/"
+    "```{seealso}\n",
+    "For more options, see [this great website](https://strftime.org/).\n",
+    "```"
    ]
   },
   {
@@ -80,7 +82,7 @@
    "id": "6",
    "metadata": {},
    "source": [
-    "## map-reduce\n",
+    "## First, `method=\"map-reduce\"`\n",
     "\n",
     "The default\n",
     "[method=\"map-reduce\"](https://flox.readthedocs.io/en/latest/implementation.html#method-map-reduce)\n",
@@ -110,7 +112,7 @@
    "id": "8",
    "metadata": {},
    "source": [
-    "## Rechunking for map-reduce\n",
+    "### Rechunking for map-reduce\n",
     "\n",
     "We can split each chunk along the `lat`, `lon` dimensions to make sure the\n",
     "output chunk sizes are more reasonable\n"
@@ -139,7 +141,7 @@
     "But what if we didn't want to rechunk the dataset so drastically (note the 10x\n",
     "increase in tasks). For that let's try `method=\"cohorts\"`\n",
     "\n",
-    "## method=cohorts\n",
+    "## `method=\"cohorts\"`\n",
     "\n",
     "We can take advantage of patterns in the groups here \"day of year\".\n",
     "Specifically:\n",
@@ -271,7 +273,7 @@
    "id": "21",
    "metadata": {},
    "source": [
-    "And now our cohorts contain more than one group\n"
+    "And now our cohorts contain more than one group, *and* there is a substantial reduction in number of cohorts **162 -> 12**\n"
    ]
   },
   {
@@ -281,7 +283,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "preferrd_method, new_cohorts = flox.core.find_group_cohorts(\n",
+    "preferred_method, new_cohorts = flox.core.find_group_cohorts(\n",
     "    labels=codes,\n",
     "    chunks=(rechunked.chunksizes[\"time\"],),\n",
     ")\n",
@@ -295,13 +297,23 @@
    "id": "23",
    "metadata": {},
    "outputs": [],
+   "source": [
+    "preferred_method"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "24",
+   "metadata": {},
+   "outputs": [],
    "source": [
     "new_cohorts.values()"
    ]
   },
   {
    "cell_type": "markdown",
-   "id": "24",
+   "id": "25",
    "metadata": {},
    "source": [
     "Now the groupby reduction **looks OK** in terms of number of tasks but remember\n",
@@ -311,7 +323,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "25",
+   "id": "26",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -320,7 +332,25 @@
   },
   {
    "cell_type": "markdown",
-   "id": "26",
+   "id": "27",
+   "metadata": {},
+   "source": [
+    "flox's heuristics will choose `\"cohorts\"` automatically!"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "28",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "flox.xarray.xarray_reduce(rechunked, day, func=\"mean\")"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "29",
    "metadata": {},
    "source": [
     "## How about other climatologies?\n",
@@ -331,7 +361,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "27",
+   "id": "30",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -340,7 +370,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "28",
+   "id": "31",
    "metadata": {},
    "source": [
     "This looks great. Why?\n",