|
| 1 | +""" |
| 2 | +Import ESRI feature layers from open data portal sources. |
| 3 | +Export into shared GCS folder to use across projects. |
| 4 | +
|
| 5 | +https://github.com/cagov/caldata-mdsa-caltrans-pems/blob/main/jobs/utils/geo.py |
| 6 | +""" |
| 7 | + |
| 8 | +from urllib.parse import parse_qsl, urlencode, urlparse, urlunparse |
| 9 | + |
| 10 | +import geopandas as gpd |
| 11 | +import pandas as pd |
| 12 | + |
| 13 | +from calitp_data_analysis import utils |
| 14 | +from calitp_data_analysis.sql import to_snakecase |
| 15 | + |
| 16 | +SHARED_GCS = "gs://calitp-analytics-data/data-analyses/shared_data/" |
| 17 | + |
| 18 | +COUNTY_POLYGONS_URL = "https://services1.arcgis.com/jUJYIo9tSA7EHvfZ/arcgis/rest/services/California_County_Boundaries/FeatureServer/0/query" |
| 19 | + |
| 20 | +CALTRANS_DISTRICTS_URL = ( |
| 21 | + "https://caltrans-gis.dot.ca.gov/arcgis/rest/services/CHboundary/District_Tiger_Lines/FeatureServer/0/query/" |
| 22 | +) |
| 23 | + |
| 24 | +LEGISLATIVE_BASE = "https://services3.arcgis.com/fdvHcZVgB2QSRNkL/arcgis/rest/services/Legislative/FeatureServer/" |
| 25 | + |
| 26 | +LEGISLATIVE_DICT = { |
| 27 | + "ca_assembly_districts": f"{LEGISLATIVE_BASE}0/query/", |
| 28 | + "ca_senate_districts": f"{LEGISLATIVE_BASE}1/query/", |
| 29 | + "ca_congressional_districts": f"{LEGISLATIVE_BASE}2/query/", |
| 30 | +} |
| 31 | + |
| 32 | +CALTRANS_BASE = "https://caltrans-gis.dot.ca.gov/arcgis/rest/services/CHhighway/" |
| 33 | +CRS_FUNCTIONAL_CLASSICIATION_URL = f"{CALTRANS_BASE}CRS_Functional_Classification/FeatureServer/0/query/" |
| 34 | +SHN_LINES_URL = f"{CALTRANS_BASE}SHN_Lines/FeatureServer/0/query/" |
| 35 | +SHN_POSTMILES_URL = f"{CALTRANS_BASE}SHN_Postmiles_Tenth/FeatureServer/0/query/" |
| 36 | + |
| 37 | + |
| 38 | +def gdf_from_esri_feature_service(url): |
| 39 | + """ |
| 40 | + Load an Esri Feature Service to a GeoDataFrame. |
| 41 | +
|
| 42 | + Given a URL to an Esri Feature Service, download the features |
| 43 | + as GeoJSON, and put them into a GeoDataFrame. |
| 44 | + """ |
| 45 | + parsed = urlparse(url) |
| 46 | + |
| 47 | + # Ensure we are using the query endpoint of the feature service |
| 48 | + if not parsed.path.endswith("/query"): |
| 49 | + parsed = parsed._replace(path=parsed.path + "/query") |
| 50 | + |
| 51 | + # Keep grabbing data using the resultOffset until there is no more left |
| 52 | + offset = 0 |
| 53 | + gdfs = [] |
| 54 | + while True: |
| 55 | + queries = dict(parse_qsl(parsed.query)) |
| 56 | + queries.update( |
| 57 | + { |
| 58 | + "where": "1=1", # Ensure all rows |
| 59 | + "f": "geojson", # Ensure GeoJSON |
| 60 | + "outFields": "*", # Ensure all columns |
| 61 | + "resultOffset": str(offset), # offset the start |
| 62 | + "returnGeometry": "true", # Yes we want geometries |
| 63 | + } |
| 64 | + ) |
| 65 | + offset_url = urlunparse(parsed._replace(query=urlencode(queries))) |
| 66 | + |
| 67 | + gdf = gpd.read_file(offset_url, driver="GeoJSON") |
| 68 | + if len(gdf) == 0: |
| 69 | + break |
| 70 | + |
| 71 | + gdfs.append(gdf) |
| 72 | + offset += len(gdf) |
| 73 | + return pd.concat(gdfs).reset_index(drop=True) |
| 74 | + |
| 75 | + |
| 76 | +def combine_legislative_districts(assembly_districts_url: str, senate_districts_url: str) -> gpd.GeoDataFrame: |
| 77 | + """ |
| 78 | + Create a combined assembly district and senate districts |
| 79 | + gdf. |
| 80 | + """ |
| 81 | + assembly_districts = gdf_from_esri_feature_service(assembly_districts_url) |
| 82 | + senate_districts = gdf_from_esri_feature_service(senate_districts_url) |
| 83 | + |
| 84 | + gdf = pd.concat( |
| 85 | + [ |
| 86 | + assembly_districts[["AssemblyDistrictLabel", "geometry"]].rename( |
| 87 | + columns={"AssemblyDistrictLabel": "legislative_district"} |
| 88 | + ), |
| 89 | + senate_districts[["SenateDistrictLabel", "geometry"]].rename( |
| 90 | + columns={"SenateDistrictLabel": "legislative_district"} |
| 91 | + ), |
| 92 | + ], |
| 93 | + axis=0, |
| 94 | + ignore_index=True, |
| 95 | + ) |
| 96 | + |
| 97 | + return gdf |
| 98 | + |
| 99 | + |
| 100 | +def exclude_columns( |
| 101 | + gdf: gpd.GeoDataFrame, list_of_cols: list = ["objectid", "shape__area", "shape__length"] |
| 102 | +) -> gpd.GeoDataFrame: |
| 103 | + """ |
| 104 | + Drop a couple of columns that tend to show up for ESRI. |
| 105 | + """ |
| 106 | + for c in list_of_cols: |
| 107 | + if c in gdf.columns: |
| 108 | + gdf = gdf.drop(columns=c) |
| 109 | + |
| 110 | + return gdf |
| 111 | + |
| 112 | + |
| 113 | +if __name__ == "__main__": |
| 114 | + esri_datasets = { |
| 115 | + "ca_county": COUNTY_POLYGONS_URL, |
| 116 | + "caltrans_districts": CALTRANS_DISTRICTS_URL, |
| 117 | + "ca_congressional_districts": LEGISLATIVE_DICT["ca_congressional_districts"], |
| 118 | + "state_highway_network_raw": SHN_LINES_URL, |
| 119 | + "state_highway_network_postmiles": SHN_POSTMILES_URL, |
| 120 | + "public_road_functional_classification": CRS_FUNCTIONAL_CLASSICIATION_URL, |
| 121 | + } |
| 122 | + for dataset_name, url in esri_datasets.items(): |
| 123 | + print(dataset_name) |
| 124 | + gdf = gdf_from_esri_feature_service(url) |
| 125 | + gdf = gdf.pipe(to_snakecase).pipe(exclude_columns) |
| 126 | + |
| 127 | + print(gdf.crs) |
| 128 | + print(gdf.shape) |
| 129 | + utils.geoparquet_gcs_export(gdf, SHARED_GCS, dataset_name) |
| 130 | + del gdf |
| 131 | + |
| 132 | + legislative_districts_gdf = combine_legislative_districts( |
| 133 | + LEGISLATIVE_DICT["ca_assembly_districts"], |
| 134 | + LEGISLATIVE_DICT["ca_senate_districts"], |
| 135 | + ) |
| 136 | + |
| 137 | + utils.geoparquet_gcs_export(legislative_districts_gdf, SHARED_GCS, "legislative_districts") |
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