auto fix geometry with buffer(0)

app.py

@@ -103,8 +103,8 @@ def shape_3d_to_2d(shape):
 
 def preprocess_gdf(gdf):
     gdf = gdf.to_crs(epsg=7761)  # epsg for Gujarat
-
     gdf["geometry"] = gdf["geometry"].apply(shape_3d_to_2d)
+    gdf["geometry"] = gdf.buffer(0)  # Fixes some invalid geometries
     return gdf
 
 
@@ -342,7 +342,9 @@ if isinstance(file_url, str):
 buffer = st.number_input("Buffer (m)", value=50, min_value=0, step=1)
 
 input_gdf = preprocess_gdf(gpd.read_file(file_url))
-
+# print(input_gdf.is_valid)
+# print(gpd.read_file(file_url).is_valid)
+# print(input_gdf.iloc[0].geometry.__geo_interface__)
 
 # Input: Geometry
 def format_fn(x):