Update index.py

index.py

@@ -213,6 +213,14 @@ app.layout = dbc.Container([
 def update_output(selected_topic, selected_domain, start_date, end_date):
     #log
     print("topic:",selected_topic,"domain:",selected_domain,"start:", start_date,"end:", end_date)
+
+    # This is a hack to filter dates to confine to respective topic boundaries
+    min_topic_date  = df[df["Topic"] == selected_topic]["date"].min()
+    max_topic_date = df[df["Topic"] == selected_topic]["date"].max()
+
+    #if start visualisation from where the topic starts
+    start_date = min_topic_date if (min_topic_date > start_date) else start_date
+    end_date = max_topic_date if (max_topic_date < end_date ) else  end_date
     
     # filter dataframes based on updated data range
     mask_1 = ((df["Topic"] == selected_topic) & (df['date'] >= start_date) & (df['date'] <= end_date))