Fix current reset

ipi_extract.py

@@ -488,7 +488,7 @@ class Callback(object):
         if self.sr != sr:
             self.sr = sr
             sr_update = True
-        self.curr = 0  # current view selected
+        self.change_curr('0')  # reset current view to 0
         self.offset = np.zeros((0, 2))
         self.scat.set_offsets(self.offset)
         self.scat.set_color([[0, 0, 0, 1]])