app.py

import streamlit as st
import pydeck as pdk

# Define a GeoJSON data source
geojson_data = {
    "type": "FeatureCollection",
    "features": [
        {
            "type": "Feature",
            "geometry": {
                "type": "LineString",
                "coordinates": [
                    [8.7811, -0.7193],  # Port-Gentil latitude and longitude
                    [15.8277, -0.2280]  # Republic of Congo latitude and longitude
                ]
        }
    ]
}

# Define the polygon geometry
polygon_geojson_data = {
    "type": "FeatureCollection",
    "features": [
        {
            "type": "Feature",
            "geometry": {
                "type": "Polygon",
                "coordinates": [
                    [
                        [16.0315, -0.3797],  # Polygon coordinates
                        [16.0315, -0.4515],
                        [15.9199, -0.4515],
                        [15.9199, -0.3797],
                        [16.0315, -0.3797]
                    ]
                ]
            },
            "properties": {
                "name": "Population: 200,000"
            }
        }
    ]
}


# Define the PyDeck layer
layer = pdk.Layer(
    "GeoJsonLayer",
    data=geojson_data,
    get_position="geometry.coordinates",
    get_radius=100000,
    get_fill_color=[255, 0, 0],
    pickable=True
)

# Define the PyDeck layer for the line geometry
line_layer = pdk.Layer(
    "GeoJsonLayer",
    data=line_geojson_data,
    get_source_position="geometry.coordinates",
    get_target_position=lambda feature: feature["geometry"]["coordinates"][-1],
    get_color=[255, 165, 0],
    get_width=30000,
    pickable=True
)

# Define the PyDeck layer for the polygon geometry
polygon_layer = pdk.Layer(
    "GeoJsonLayer",
    data=polygon_geojson_data,
    get_fill_color=[0, 255, 255, 128],
    get_line_color=[0, 0, 0],
    get_line_width=3,
    get_polygon="geometry.coordinates",
    get_text="properties.name",
    get_text_anchor="middle",
    get_text_offset=[0, 20],
    get_text_color=[255, 255, 255],
    pickable=True
)

# Define the PyDeck view state
view_state = pdk.ViewState(
    latitude=geojson_data['features'][0]['geometry']['coordinates'][1],
    longitude=geojson_data['features'][0]['geometry']['coordinates'][0],
    zoom=5
)

# Set the Mapbox API key
pdk.settings.api_key = "pk.eyJ1IjoiYWFyb253YWNrZXIiLCJhIjoiY2xlOGV2enN3MGV0YzN2bzZjMm96eXhyOSJ9.SqZugs5uIpIBvMM_Hioyvg"

# Define the PyDeck deck
deck = pdk.Deck(
    layers=[layer],
    initial_view_state=view_state,
    map_style="mapbox://styles/mapbox/light-v9"
)

# Render the PyDeck deck using Streamlit
st.pydeck_chart(deck)