Update streamlit_app.py

streamlit_app.py

@@ -205,12 +205,11 @@ with tab_chart:
         margin=dict(l=40, r=20, t=40, b=40), legend_title_text="")
     st.plotly_chart(fig, use_container_width=True)
 
-# ── TREND LINES TAB ──────────────────────────────────────────
 # ── TREND LINES TAB ──────────────────────────────────────────
 with tab_trend:
     st.caption("Ordinary-least-squares trend for each item (hover for details).")
     if len(df_line["Year"].unique()) < 2:
-        st.info("Need ≥ 2 years of data.")
+        st.info("Need ≥ 2 years of data. Select either line of correlation chart type to show trend lines")
     else:
         fig_tr = go.Figure()
         for sub in df_line["SubTheme"].unique():