added update_cell

stand/adb.py

@@ -28,6 +28,12 @@ class ArcticLibrary:
         return getattr(self.lib, name)
 
 
+    def update_cell(self, symbol, index, column, value):
+        df = self.get_data(symbol, index)
+        df.at[index, column] = value
+        self.set_data(symbol, df)
+
+
     def get_data(self, symbol, index=None):
         if index is not None:
             index = encode_index(index)

stand/table.py

@@ -85,10 +85,7 @@ def update_adb(evt):
     new_val = evt.args["newValue"]
 
     row_id = int(row_id)
-    lib = adb.get(beamline)
-    df = lib.get_data(pgroup, row_id)
-    df.at[row_id, col_id] = new_val
-    lib.set_data(pgroup, df)
+    adb.get(beamline).update_cell(pgroup, row_id, col_id, new_val)
 
 
 def update_grids(evt):