updated monitor plot code

Author: willgebhardt

Diff for: ngclearn/components/base_monitor.py

@@ -310,4 +310,4 @@ def make_plot(self, compartment, ax=None, ylabel=None, xlabel=None, title=None,
             for k in range(n):
                 _ax.plot(vals[:, 0, k])
         else:
-            plot_func(vals, ax=_ax)
+            plot_func(vals[:, :, 0:n], ax=_ax)