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import pandas as pd
import geopandas as gpd
from shapely.ops import unary_union
from arcgis_operations import get_gdf_from_feature_layer
from geospatial_operations import process_buildings, get_max_extent, create_plot
def ss_intersect(geojson1, ss_geoselect, multiplier_factor, default_building_height):
# Read the GeoJSON files
input_gdf = gpd.read_file(geojson1.name)
# Check that CRS is EPSG:4326
if input_gdf.crs.to_epsg() != 4326:
raise ValueError("Input GeoJSON files must be in CRS EPSG:4326")
if ss_geoselect==0:
sensitive_sites_gdf = gpd.read_file("sensitive_sites/NYC_Parks_Properties.geojson")
else:
sensitive_sites_gdf = gpd.read_file("sensitive_sites/NYC_Parks_Zones.geojson")
default_building_height_m = default_building_height * 0.3048
buffers, intersected_sites, intersection_desc = process_buildings(input_gdf, sensitive_sites_gdf, default_building_height_m, multiplier_factor)
# Concatenate all buffer GeoDataFrames and save as a GeoJSON file
buffers_gdf = pd.concat(buffers, ignore_index=True)
buffers_gdf = buffers_gdf.to_crs("EPSG:4326")
buffers_gdf.to_file("building_buffers.geojson", driver='GeoJSON')
# Concatenate all intersected sensitive sites and save as a GeoJSON file
if intersected_sites:
intersected_sites_gdf = pd.concat(intersected_sites, ignore_index=True)
intersected_sites_gdf = intersected_sites_gdf.to_crs("EPSG:4326")
else: #if there aren't any intersections, return an empty geojson
intersected_sites_gdf = gpd.read_file("files/No_intersecting_buildings.geojson")
print("No buildings are in the vicinity of any sensitive sites.")
intersected_sites_gdf.to_file("intersected_sensitive_sites.geojson", driver='GeoJSON')
# Perform the union operation if there is more than one buffer
if len(buffers) > 1:
# Perform a unary union on the geometry column of the GeoDataFrame
buffer_union = unary_union(buffers_gdf['geometry'])
# Create a new GeoDataFrame from the union result
buffer_union_gdf = gpd.GeoDataFrame(geometry=[buffer_union], crs="EPSG:4326")
# Save the union GeoDataFrame as a GeoJSON file
buffer_union_gdf.to_file("buffer_union.geojson", driver='GeoJSON')
# Calculate the maximum extent
extent = get_max_extent(input_gdf, buffers_gdf)
lots_url = "https://services5.arcgis.com/GfwWNkhOj9bNBqoJ/arcgis/rest/services/MAPPLUTO/FeatureServer/0" # Access MapPLUTO # Eventually should be a checkbox
lots_gdf = get_gdf_from_feature_layer(lots_url)
# Create and save the plot - which is the output image
create_plot('output_image.png', extent, lots_gdf, sensitive_sites_gdf, buffer_union_gdf, intersected_sites_gdf, input_gdf)
# Return the image, geojson files, and text description
return 'output_image.png', "building_buffers.geojson", "buffer_union.geojson", intersection_desc
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