Added loads of units in nearly all graphs.

Overhauled fig_invariance_full.pdf.
Added some legends, somewhere.

python/plot_functions.py

@@ -104,9 +104,9 @@ def ylimits(signal, ax=None, minval=None, maxval=None, pad=0.05):
         return [minval, maxval]
     limits = [minval, maxval]
     if minval is None:
-        limits[0] = signal.min()
+        limits[0] = np.nanmin(signal)
     if maxval is None:
-        limits[1] = signal.max()
+        limits[1] = np.nanmax(signal)
     span = limits[1] - limits[0]
     if pad and minval is None:
         limits[0] -= span * pad