first commit

app.py

@@ -0,0 +1,50 @@
+import json
+import streamlit as st
+import pandas as pd
+import geopandas as gpd
+import leafmap.foliumap as leafmap
+
+# wide streamlit display
+st.set_page_config(layout="wide")
+
+query_params = st.experimental_get_query_params()
+file_url = query_params.get("file_url", [None])[0]
+
+if file_url:
+    input_gdf = gpd.read_file(file_url)
+    input_gdf = input_gdf.to_crs(epsg=7761)  # Gujarat zone
+
+    def format_fn(x):
+        return input_gdf.drop(columns=["geometry"]).loc[x].to_dict()
+
+    input_geometry_idx = st.selectbox("Select the geometry", input_gdf.index, format_func=format_fn)
+    geometry_gdf = input_gdf[input_gdf.index == input_geometry_idx]
+
+    m = leafmap.Map()
+    m.add_wms_layer(
+        "https://wayback.maptiles.arcgis.com/arcgis/rest/services/World_Imagery/WMTS/1.0.0/GoogleMapsCompatible/MapServer/tile/56450/{z}/{y}/{x}"
+    )
+    m.add_gdf(
+        geometry_gdf,
+        layer_name="Geometry",
+        zoom_to_layer=True,
+        style_function=lambda x: {"color": "red", "fillOpacity": 0.0},
+    )
+    m.to_streamlit()
+
+    # Metrics
+    stats_df = pd.DataFrame()
+    stats_df.loc["Points"] = json.loads(geometry_gdf.to_crs(4326).to_json())["features"][0]["geometry"]["coordinates"]
+    stats_df.loc["Area (ha)"] = geometry_gdf.geometry.area.item() / 10000
+    stats_df.loc["Perimeter (m)"] = geometry_gdf.geometry.length.item()
+
+    st.write("<h3><div style='text-align: center;'>Geometry Metrics</div></h3>", unsafe_allow_html=True)
+    st.markdown(
+        f"""| Metric | Value |
+    | --- | --- |
+    | Area (m^2) | {stats_df['Area (m^2)'].item():.2f} m^2 = {stats_df['Area (m^2)'].item()/10000:.2f} ha |
+    | Perimeter (m) | {stats_df['Perimeter (m)'].item():.2f} m |
+    """
+    )
+else:
+    st.warning("Please provide a KML or GeoJSON URL as a query parameter, e.g., `?file_url=<your_file_url>`")

requirements.txt

@@ -0,0 +1,2 @@
+leafmap
+geopandas