fixes CRS on dual nodes gdf

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "cityseer"
-version = '4.13.0'
+version = '4.13.1'
 description = "Computational tools for network-based pedestrian-scale urban analysis"
 readme = "README.md"
 requires-python = ">=3.10, <3.13"

pysrc/cityseer/tools/io.py

@@ -891,6 +891,7 @@ def network_structure_from_nx(
         edges_gdf["primal_node_id"] = agg_edge_dual_data
         nodes_gdf: gpd.GeoDataFrame = nodes_gdf.join(nodes_dual_gdf)  # type: ignore
         nodes_gdf.set_geometry("primal_edge", inplace=True)
+        nodes_gdf.set_crs(crs, inplace=True)
         nodes_gdf["dual_node"] = nodes_gdf["geom"].to_wkt()  # type: ignore
         nodes_gdf.drop(columns=["geom"], inplace=True)
 

tests/tools/test_io.py

@@ -220,6 +220,8 @@ def test_network_structure_from_nx(diamond_graph):
         assert len(nodes_gdf) == (network_structure.node_count()) == G.number_of_nodes()
         # edges = x2
         assert network_structure.edge_count == G.number_of_edges() * 2
+        # CRS check
+        assert nodes_gdf.crs.to_epsg() == 3395
         # dual specific checks
         if is_dual is True:
             # check that primal geom is copied across