Update app.py

app.py

@@ -191,10 +191,10 @@ trending_keywords = Counter(words).most_common(10)
 logging.info("Top 10 Trending Keywords in Captions:")
 print(trending_keywords)
 
-# Engagement Heatmap by Time of Day
+# Engagement Heatmap by Time of Day (using combined data)
 logging.info("Creating engagement heatmap by time of day...")
-engagement_df['hour'] = engagement_df['posting_time'].dt.hour
-engagement_by_hour = engagement_df.groupby('hour')['engagement_rate'].mean().reset_index()
+combined_df['hour'] = combined_df['posting_time'].dt.hour
+engagement_by_hour = combined_df.groupby('hour')['engagement_rate'].mean().reset_index()
 
 plt.figure(figsize=(10, 6))
 sns.heatmap(engagement_by_hour.pivot_table(index='hour', values='engagement_rate'), annot=True, cmap='YlGnBu')