Update app.py

app.py

@@ -1,8 +1,7 @@
-# Northern.Lights.Map.Streamlit.Folium - write a streamlit python program that uses functions and user interface elements of a textbox, a dial, a four direction button array for up down left right and display a folium map with the data in python list dictionaries with these values: Aurora Spottings, Notifications on Nerthern Lights, Northern lights map location cities and countries for Iceland on a map written with folium for latitude and longitude of top ten places to view Northern Lights.  Cite References as urls.
 import streamlit as st
 import folium
-from folium import Marker
-from streamlit_folium import folium_static
+import dask.dataframe as dd
+from folium.plugins import MarkerCluster
 
 # Top 10 locations for viewing Northern Lights in Iceland
 northern_lights_locations = [
@@ -18,54 +17,39 @@ northern_lights_locations = [
     {"name": "Kirkjufell", "lat": 64.9426, "lon": -23.3061},
 ]
 
-def display_map(locations):
+# Function to display the map
+def display_map(locations, lat, lon):
     # Create a folium map centered in Iceland
-    iceland_map = folium.Map(location=[64.9631, -19.0208], zoom_start=6)
+    iceland_map = folium.Map(location=[lat, lon], zoom_start=6)
 
-    # Add markers for the top 10 locations for viewing Northern Lights
-    for location in locations:
-        Marker(
-            [location["lat"], location["lon"]],
-            popup=f"<b>{location['name']}</b>",
-        ).add_to(iceland_map)
-
-    return iceland_map
+    # Create a marker cluster group
+    marker_cluster = MarkerCluster().add_to(iceland_map)
 
-# Streamlit app
-st.title("Top 10 Locations to View Northern Lights in Iceland")
+    # Create a Dask dataframe from the list of locations
+    dask_df = dd.from_pandas(pd.DataFrame(locations), npartitions=4)
 
-# Textbox
-user_text = st.text_input("Enter your text:")
+    # Add markers for the top 10 locations for viewing Northern Lights
+    def add_markers(row):
+        folium.Marker(
+            location=[row["lat"], row["lon"]],
+            popup=f"<b>{row['name']}</b>",
+        ).add_to(marker_cluster)
 
-# Dial
-dial_value = st.slider("Select a value:", 0, 100)
+    dask_df.map_partitions(lambda df: df.apply(add_markers, axis=1)).compute()
 
-# Four-direction button array
-st.write("Four-direction button array:")
-col1, col2, col3 = st.columns(3)
-with col2:
-    st.button("Up")
-with col1:
-    st.button("Left")
-with col3:
-    st.button("Right")
-with col2:
-    st.button("Down")
+    return iceland_map
 
-# Display Folium map
-st.write("Top 10 locations for viewing the Northern Lights in Iceland:")
-folium_map = display_map(northern_lights_locations)
-# from streamlit_folium import st_folium
+# Streamlit app
+st.title("Northern Lights Map in Iceland")
 
-# center on Liberty Bell, add marker
-m = folium.Map(location=[39.949610, -75.150282], zoom_start=16)
-folium.Marker(
-    [39.949610, -75.150282], popup="Liberty Bell", tooltip="Liberty Bell"
-).add_to(m)
+# User input for latitude and longitude
+lat = st.number_input("Enter latitude:", value=64.9631, step=0.0001)
+lon = st.number_input("Enter longitude:", value=-19.0208, step=0.0001)
 
-# call to render Folium map in Streamlit
-st_data = st_folium(m, width=725)
-folium_static(folium_map)
+# Display the map
+st.write("Northern Lights Viewing Locations in Iceland:")
+folium_map = display_map(northern_lights_locations, lat, lon)
+st.folium_static(folium_map)
 
 # Cite references
 st.write(
@@ -73,6 +57,7 @@ st.write(
     References:
     - [Folium documentation](https://python-visualization.github.io/folium/)
     - [Streamlit documentation](https://docs.streamlit.io/)
+    - [Dask documentation](https://dask.org/)
     - [Top 10 locations](https://www.guidetoiceland.is/best-of-iceland/top-10-places-to-see-the-northern-lights)
 """
 )