activity chart without duplicates

rowers/interactiveplots.py

@@ -237,8 +237,6 @@ def interactive_boxchart(datadf,fieldname,extratitle=''):
 
 
 def interactive_activitychart(workouts,startdate,enddate,stack='type'):
-    if len(workouts) == 0:
-        return "",""
     
     dates = []
     dates_sorting = []
@@ -316,7 +314,10 @@ def interactive_activitychart(workouts,startdate,enddate,stack='type'):
             label = CatAttr(columns=['date'], sort=False),
             xlabel='Date',
             ylabel='Time',
-            title='Activity',            
+            title='Activity {d1} to {d2}'.format(
+                d1 = startdate.strftime("%Y-%m-%d"),
+                d2 = enddate.strftime("%Y-%m-%d"),
+                ),
             stack=stack,
     	    plot_width=350,
 	    plot_height=250,