nb4 fixes

notebooks/PaleoHack-nb04_Forcing&Response.ipynb

@@ -172,9 +172,7 @@
     "\n",
     "Given that all the noise appears to be at scales shorter than ~5ky, the simplest thing is to filter them out. Of course, `pyleoclim` has a button for that.\n",
     "\n",
-    "**Exercise 4.4** Look up the `filter()` function for the _Series_ class and apply with a cutoff scale of 10 kyr. Then plot it on top of the original, with proper labels.\n",
-    "\n",
-    "**Answer 4.4**"
+    "**Exercise 4.4** Look up the `filter()` function for the _Series_ class and apply with a cutoff scale of 10 kyr. Then plot it on top of the original, with proper labels."
    ]
   },
   {
@@ -183,10 +181,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "tsb_low = tsb.filter(cutoff_scale = 10)\n",
-    "fig, ax = tsb.plot(mute=True,label='original composite')\n",
-    "tsb_low.plot(ax=ax,label='Butterworth filter')\n",
-    "pyleo.showfig(fig)"
+    "## your code here ##"
    ]
   },
   {
@@ -230,20 +225,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "ssa = tsb_coarse.ssa()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "tsb_ssa = tsb_coarse.copy()\n",
-    "tsb_ssa.value = ssa.RCseries\n",
-    "fig, ax = tsb.plot(mute=True,label='original')\n",
-    "tsb_ssa.plot(ax=ax,label='SSA reconstruction')\n",
-    "pyleo.showfig(fig)"
+    "## your code here ##"
    ]
   },
   {
@@ -277,16 +259,14 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "ms  = pyleo.MultipleSeries([qsb.standardize(), tsb_low.standardize()])\n",
-    "msc = ms.common_time()\n",
-    "msc.plot()"
+    "## your code here ##"
    ]
   },
   {
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "**Exercise 4.8** Recompute wavelet coherence with the coarse-grained, filtered isotopic record. What changes? Was it worth it? How would you summarize the relationship between insolation and the Sanbao/Hulu/Dongge composite?"
+    "**Exercise 4.8** Recompute wavelet coherence with the coarse-grained, filtered isotopic record (make sure to name it coh again). What changes? Was it worth it? How would you summarize the relationship between insolation and the Sanbao/Hulu/Dongge composite?"
    ]
   },
   {
@@ -295,10 +275,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "qs = msc.series_list[0]\n",
-    "ts = msc.series_list[1] \n",
-    "coh = qs.wavelet_coherence(ts)\n",
-    "coh.plot()"
+    "## your code here ##"
    ]
   },
   {