fixed inconsistencies in returned objects: missing channels, is_clipped

src/damaris/data/Accumulation.py

@@ -111,21 +111,22 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
             self.lock.release()
             raise
 
-        tmp_x = self.x[start:end+1]
+        tmp_x = self.x[start:end+1].copy()
         tmp_y = []
 
         for i in range(self.get_number_of_channels()):
-            tmp_y.append(self.y[i][start:end+1])
+            tmp_y.append(self.y[i][start:end+1].copy())
 
-        r = Accumulation(x = tmp_x, y = tmp_y, n = self.n, index = [(0,len(tmp_y[0])-1)], sampl_freq = self.sampling_rate, error = self.use_error)            
+        r = Accumulation(x = tmp_x, y = tmp_y, n = self.n, index = [(0,len(tmp_y[0])-1)], sampl_freq = self.sampling_rate, error = self.use_error)
         if self.uses_statistics():
             r.y_square = []
             for i in range(self.get_number_of_channels()):
-                r.y_square.append(self.y_square[i][start:end+1])
+                r.y_square.append(self.y_square[i][start:end+1].copy())
         if self.common_descriptions is not None:
             r.common_descriptions = self.common_descriptions.copy()
         r.time_period = self.time_period[:]
         r.job_ids = self.job_ids.copy()
+        r.is_clipped = self.is_clipped
         self.lock.release()
         return r