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Add sql commands
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README.md
16
README.md
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@ -2,7 +2,7 @@
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Based on https://github.com/Nate-Wessel/hamilton-import
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original_data from:
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`original_data` from:
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- https://gis-sonomacounty.hub.arcgis.com/datasets/2202c1cd6708441f987ca5552f2d9659
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- https://gis-sonomacounty.hub.arcgis.com/datasets/0f5982c3582d4de0b811e68d7f0bff8f
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- https://overpass-turbo.eu/
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@ -20,7 +20,19 @@ out;
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## Prerequisites
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The postgis package appropriate for the version of postgres server you have installed (in my case, 11)
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Ubuntu
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- sudo apt install postgis
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- sudo apt install shp2pgsql osm2pgsql
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- sudo apt install postgresql-11 postgresql-11-postgis-3
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- The postgresql server started/running/configured and databases `gis` and `osm` created
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## Running
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- Run the following SQL inside the `gis` database to enable the PostGIS and hstore extensions: `CREATE EXTENSION postgis; CREATE EXTENSION hstore;`
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- Unzip the `original_data` and open a shell in that folder.
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- Then, run from your shell: `shp2pgsql -s 3735:4326 -g geom -I Parcels__Public_.shp | psql -d gis -U postgres -W`
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- `shp2pgsql -s 3735:4326 -g geom -I Sonoma_County_Building_Outlines.shp | psql -d gis -U postgres -W`
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- `osm2pgsql -d gis -c --prefix son --slim --extra-attributes --hstore --latlong sonoma-orig-buildings-20201219.osm -U postgres -W`
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Now all the data is in Postgres. For processing and conflation, read through and execute `conflation.sql` as per your comfort level.
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284
conflation.sql
Normal file
284
conflation.sql
Normal file
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-- add fields for OSM tags and data processing
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ALTER TABLE sonoma_county_building_outlines
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ADD COLUMN "addr:housenumber" text,
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ADD COLUMN "addr:street" text,
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ADD COLUMN loc_geom geometry(multipolygon,32616),
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ADD COLUMN conflated boolean DEFAULT FALSE,
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ADD COLUMN main boolean; -- is it the main building on the parcel?
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-- create local geometry fields and validate geometries
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UPDATE sonoma_county_building_outlines SET loc_geom = ST_MakeValid(ST_Transform(geom,32616));
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CREATE INDEX ON sonoma_county_building_outlines USING GIST (loc_geom);
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-- added fields for the parcels table
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ALTER TABLE parcels__public_
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ADD COLUMN "addr:street" text,
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ADD COLUMN loc_geom geometry(multipolygon,32616),
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ADD COLUMN building_count integer,
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ADD COLUMN repeating BOOLEAN DEFAULT FALSE;
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-- create local geometry fields and validate geometries
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UPDATE parcels__public_ SET loc_geom = ST_MakeValid(ST_Transform(geom,32616));
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CREATE INDEX ON parcels__public_ USING GIST (loc_geom);
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-- parse and expand parcel street addresses
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UPDATE parcels__public_ SET "addr:street" = initcap(addrst)||' '||
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CASE
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WHEN upper(addrsf) = 'AV' THEN 'Avenue'
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WHEN upper(addrsf) = 'DR' THEN 'Drive'
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WHEN upper(addrsf) = 'RD' THEN 'Road'
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WHEN upper(addrsf) = 'ST' THEN 'Street'
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WHEN upper(addrsf) = 'LN' THEN 'Lane'
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WHEN upper(addrsf) = 'CT' THEN 'Court'
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WHEN upper(addrsf) = 'PL' THEN 'Place'
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WHEN upper(addrsf) = 'CR' THEN 'Circle'
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WHEN upper(addrsf) = 'TE' THEN 'Terrace'
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WHEN upper(addrsf) = 'PK' THEN 'Park'
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WHEN upper(addrsf) = 'WY' THEN 'Way'
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WHEN upper(addrsf) = 'BV' THEN 'Boulevard'
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WHEN upper(addrsf) = 'PW' THEN 'Parkway'
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WHEN upper(addrsf) = 'TL' THEN 'Trail'
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WHEN upper(addrsf) = 'HW' THEN 'Highway'
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WHEN upper(addrsf) = 'WA' THEN 'Way'
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WHEN upper(addrsf) = 'TR' THEN 'Terrace'
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WHEN upper(addrsf) = 'SQ' THEN 'Square'
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WHEN upper(addrsf) = 'AL' THEN 'Alley'
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WHEN upper(addrsf) = 'BL' THEN 'Boulevard'
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WHEN upper(addrsf) = 'CI' THEN 'Circle'
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WHEN upper(addrsf) = 'PT' THEN 'Point'
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WHEN upper(addrsf) = 'PI' THEN 'Pike'
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WHEN upper(addrsf) = 'LA' THEN 'Lane'
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ELSE '' -- NULL cases mostly have the suffix in the name field
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END;
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-- identify repeating parcels (indicates multiple addresses associated with buildings)
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WITH geom_counts AS (
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SELECT array_agg(gid) AS ids, COUNT(*)
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FROM parcels__public_
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GROUP BY geom
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), geom_counts2 AS (
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SELECT * FROM geom_counts WHERE count > 1
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)
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UPDATE parcels__public_ SET repeating = TRUE
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FROM geom_counts2
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WHERE ids @> ARRAY[gid];
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-- identify parcels with multiple buildings
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UPDATE parcels__public_ SET building_count = NULL WHERE building_count IS NOT NULL;
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WITH bcounts AS (
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SELECT
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p.gid, COUNT(*)
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FROM sonoma_county_building_outlines AS b JOIN parcels__public_ AS p ON
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ST_Intersects(b.loc_geom,p.loc_geom) AND
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ST_Area(ST_Intersection(b.loc_geom,p.loc_geom)) > 0.9*ST_Area(b.loc_geom)
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GROUP BY p.gid
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)
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UPDATE parcels__public_ SET building_count = count
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FROM bcounts WHERE bcounts.gid = parcels__public_.gid;
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-- add addresses to buildings with simple 1:1 matches to parcels
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UPDATE sonoma_county_building_outlines SET "addr:housenumber" = NULL, "addr:street" = NULL;
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WITH a AS (
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SELECT
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b.gid, p.addrno, p."addr:street"
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FROM sonoma_county_building_outlines AS b JOIN parcels__public_ AS p ON
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ST_Intersects(b.loc_geom,p.loc_geom) AND
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ST_Area(ST_Intersection(b.loc_geom,p.loc_geom)) > 0.9*ST_Area(b.loc_geom)
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WHERE p.building_count = 1 AND NOT p.repeating
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)
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UPDATE sonoma_county_building_outlines SET
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"addr:housenumber" = a.addrno,
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"addr:street" = a."addr:street"
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FROM a WHERE sonoma_county_building_outlines.gid = a.gid;
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--SELECT COUNT(*) FROM sonoma_county_building_outlines WHERE "addr:housenumber" IS NOT NULL OR "addr:street" IS NOT NULL;
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-- attempt to identify garages and sheds so they don't get addresses
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UPDATE sonoma_county_building_outlines SET main = NULL;
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-- sort the buildings on each parcel by size, but only where it's likely a garage/shed situation
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WITH sizes AS (
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SELECT
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p.gid AS pid,
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b.gid AS bid,
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row_number() OVER ( PARTITION BY p.gid ORDER BY ST_Area(b.loc_geom) DESC) AS size_order
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FROM sonoma_county_building_outlines AS b JOIN parcels__public_ AS p ON
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ST_Intersects(b.loc_geom,p.loc_geom) AND
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ST_Area(ST_Intersection(b.loc_geom,p.loc_geom)) > 0.9*ST_Area(b.loc_geom)
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WHERE
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NOT p.repeating AND -- single parcels
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p.building_count IN (2,3) -- 2 or 3 buildings on parcel
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ORDER BY p.gid ASC
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) UPDATE sonoma_county_building_outlines SET main = CASE
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WHEN size_order = 1 THEN TRUE
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WHEN size_order > 1 THEN FALSE
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ELSE NULL
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END
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FROM sizes WHERE sizes.bid = sonoma_county_building_outlines.gid;
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-- now assign addresses to main buildings on parcels with outbuildings
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WITH a AS (
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SELECT
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b.gid, p.addrno, p."addr:street"
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FROM sonoma_county_building_outlines AS b JOIN parcels__public_ AS p ON
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ST_Intersects(b.loc_geom,p.loc_geom) AND
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ST_Area(ST_Intersection(b.loc_geom,p.loc_geom)) > 0.9*ST_Area(b.loc_geom)
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WHERE
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p.building_count IN (2,3)
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AND NOT p.repeating
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AND b.main -- is main building
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)
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UPDATE sonoma_county_building_outlines SET
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"addr:housenumber" = a.addrno,
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"addr:street" = a."addr:street"
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FROM a WHERE sonoma_county_building_outlines.gid = a.gid;
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-- get a count of outbuildings so we know how many addresses are intentionally unassigned
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SELECT
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COUNT(*)
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FROM sonoma_county_building_outlines AS b JOIN parcels__public_ AS p ON
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ST_Intersects(b.loc_geom,p.loc_geom) AND
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ST_Area(ST_Intersection(b.loc_geom,p.loc_geom)) > 0.9*ST_Area(b.loc_geom)
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WHERE
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p.building_count IN (2,3)
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AND NOT p.repeating
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AND NOT b.main; -- is NOT main building
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-- try to assign multiple addresses from multiple parcels to single buildings
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WITH addresses AS (
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SELECT
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b.gid,
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array_to_string( ARRAY_AGG(DISTINCT addrno), ';') AS housenumber,
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array_to_string( ARRAY_AGG(DISTINCT "addr:street"), ';') AS street
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FROM sonoma_county_building_outlines AS b JOIN parcels__public_ AS p ON
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ST_Intersects(b.loc_geom,p.loc_geom) AND
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ST_Area(ST_Intersection(b.loc_geom,p.loc_geom)) > 0.9*ST_Area(b.loc_geom)
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WHERE
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p.building_count = 1 AND
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p.repeating AND
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b."addr:housenumber" IS NULL
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GROUP BY b.gid
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)
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UPDATE sonoma_county_building_outlines AS b SET
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"addr:housenumber" = housenumber,
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"addr:street" = street
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FROM addresses AS a
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WHERE a.gid = b.gid;
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-- try to identify addresses for buildings across multiple parcels
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WITH addresses AS (
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SELECT
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b.gid,
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array_to_string( ARRAY_AGG(DISTINCT addrno), ';') AS addrno,
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array_to_string( ARRAY_AGG(DISTINCT p."addr:street"), ';') AS street,
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COUNT(*)
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FROM sonoma_county_building_outlines AS b
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JOIN parcels__public_ AS p ON
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ST_Intersects(b.loc_geom,p.loc_geom) AND
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ST_Area(ST_Intersection(b.loc_geom,p.loc_geom)) < 0.9*ST_Area(b.loc_geom)
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WHERE
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b."addr:housenumber" IS NULL AND
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NOT p.repeating AND
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p.addrno IS NOT NULL AND
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b.sqft > 1000
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GROUP BY b.gid
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)
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UPDATE sonoma_county_building_outlines AS b SET
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"addr:housenumber" = addrno,
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"addr:street" = street
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FROM addresses AS a
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WHERE
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count = 1 AND -- only simple cases!
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a.gid = b.gid;
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-- identify intersecting/conflated buildings
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UPDATE sonoma_county_building_outlines AS b SET conflated = FALSE;
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UPDATE sonoma_county_building_outlines AS b SET conflated = TRUE
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FROM son_polygon AS osm
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WHERE ST_Intersects(b.geom,osm.way)
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AND osm.building IS NOT NULL and osm.building != 'no';
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-- dump simplified polygon geometries and OSM relavant fields into another table for exporting
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-- this code is based on https://trac.osgeo.org/postgis/wiki/UsersWikiSimplifyPreserveTopology
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-- it does take a very long time to run on this dataset...
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-- first do conflated buildings
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with poly as (
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SELECT
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gid,
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"addr:housenumber",
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"addr:street",
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est_h_feet,
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storyabove,
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storybelow,
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cwwuse,
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(st_dump(loc_geom)).*
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FROM sonoma_county_building_outlines
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WHERE conflated
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)
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SELECT
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poly.gid,
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poly."addr:housenumber",
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poly."addr:street",
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poly.est_h_feet,
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poly.storyabove,
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poly.storybelow,
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poly.cwwuse,
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ST_Transform(baz.geom,4326) AS geom
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INTO simplified_conflated_buildings
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FROM (
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SELECT (ST_Dump(ST_Polygonize(distinct geom))).geom as geom
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FROM (
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-- simplify geometries to a 0.2m tolerance to avoid repeated points
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SELECT (ST_Dump(st_simplifyPreserveTopology(ST_Linemerge(st_union(geom)), 0.2))).geom as geom
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FROM (
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SELECT ST_ExteriorRing((ST_DumpRings(geom)).geom) as geom
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FROM poly
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) AS foo
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) AS bar
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) AS baz, poly
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WHERE
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ST_Intersects(poly.geom, baz.geom)
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AND ST_Area(st_intersection(poly.geom, baz.geom))/ST_Area(baz.geom) > 0.9;
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ALTER TABLE simplified_conflated_buildings ADD CONSTRAINT temp1_pkey PRIMARY KEY (gid);
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-- next do non-conflated buldings separately
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with poly as (
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SELECT
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gid,
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"addr:housenumber",
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"addr:street",
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est_h_feet,
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storyabove,
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storybelow,
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cwwuse,
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(st_dump(loc_geom)).*
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FROM sonoma_county_building_outlines
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WHERE NOT conflated -- note: NOT
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)
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SELECT
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poly.gid,
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poly."addr:housenumber",
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poly."addr:street",
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poly.est_h_feet,
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poly.storyabove,
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poly.storybelow,
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poly.cwwuse,
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ST_Transform(baz.geom,4326) AS geom
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INTO simplified_buildings
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FROM (
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SELECT (ST_Dump(ST_Polygonize(distinct geom))).geom as geom
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FROM (
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-- simplify geometries to a 0.2m tolerance to avoid repeated points
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SELECT (ST_Dump(st_simplifyPreserveTopology(ST_Linemerge(st_union(geom)), 0.2))).geom as geom
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FROM (
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SELECT ST_ExteriorRing((ST_DumpRings(geom)).geom) as geom
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FROM poly
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) AS foo
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) AS bar
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) AS baz, poly
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WHERE
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ST_Intersects(poly.geom, baz.geom)
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AND ST_Area(st_intersection(poly.geom, baz.geom))/ST_Area(baz.geom) > 0.9;
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