Update src/streamlit_app.py

src/streamlit_app.py

@@ -31,7 +31,7 @@ except FileNotFoundError:
 
 # Path for crime data.
 DATA_PATH = Path(__file__).parent / "crime_data.csv"        # /app/src/crime_data.csv
-
+REGION_DATA_PATH = Path(__file__).parent / "area_lookup.csv"
 
 # ── 0. Page configuration ──
 st.set_page_config(
@@ -110,6 +110,8 @@ st.markdown(
 @st.cache_data
 def load_data():
     return pd.read_csv(DATA_PATH)
+def region_load_data():
+    return pd.read_csv(REGION_DATA_PATH)    
     
 if st.button("🔄 Refresh Data"):
         st.cache_data.clear()  # Clear the cache
@@ -117,9 +119,17 @@ if st.button("🔄 Refresh Data"):
         
 # 2. Load and early‐exit if missing
 df = load_data()
+lookup = region_load_data()
+map_region   = dict(zip(lookup["OBJECTID"], lookup["APREC"]))
+map_precinct = dict(zip(lookup["OBJECTID"], lookup["PREC"]))
+
 if df.empty:
     st.stop()
-        
+
+# Map into new columns
+df["RegionName"]   = df["area"].map(map_region)
+df["PrecinctCode"] = df["area"].map(map_precinct)
+
 # 3. Data preview
 st.markdown("<div class='sectionheader'> Data Preview </div>", unsafe_allow_html=True)
 st.markdown(