Handle missing orientation in `plot_eddy_contours`

Inst_eddies/Analysis/plot_eddy_contours.py

@@ -37,19 +37,23 @@ def select_ishapes(d, SHPC, i_slice, orientation, window = None):
 
     ishape_first = SHPC.comp_ishape(d, eddy_index = 1, i_slice = i_slice,
                                     orientation = orientation)
-    ishape_last = SHPC.get_ishape_last(i_slice, orientation)\
-        [d - SHPC.d_init[i_slice]]
-
-    if window is None:
-        ishape_list = list(range(ishape_first, ishape_last + 1))
-    else:
+    try:
+        ishape_last = SHPC.get_ishape_last(i_slice, orientation)\
+            [d - SHPC.d_init[i_slice]]
+    except TypeError:
         ishape_list = []
-        reader = SHPC.get_reader(i_slice, layer = "extremum",
-                                 orientation = orientation)
-
-        for ishape in range(ishape_first, ishape_last + 1):
-            points = reader.shape(ishape).points[0]
-            if util_eddies.in_window(points, window): ishape_list.append(ishape)
+    else:
+        if window is None:
+            ishape_list = list(range(ishape_first, ishape_last + 1))
+        else:
+            ishape_list = []
+            reader = SHPC.get_reader(i_slice, layer = "extremum",
+                                     orientation = orientation)
+
+            for ishape in range(ishape_first, ishape_last + 1):
+                points = reader.shape(ishape).points[0]
+                if util_eddies.in_window(points, window):
+                    ishape_list.append(ishape)
 
     return ishape_list