33 lines
760 B
Bash
Executable File
33 lines
760 B
Bash
Executable File
#!/usr/bin/env bash
|
|
|
|
#
|
|
# Load geometries from GeoJSON to Postgres
|
|
# - assume postgres connection details are set in the environment using PGUSER, PGHOST etc.
|
|
#
|
|
: ${1?"Usage: $0 ./path/to/mastermap/dir"}
|
|
|
|
mastermap_dir=$1
|
|
|
|
#
|
|
# Create 'geometry' record with
|
|
# id: <polygon-guid>,
|
|
# source_id: <toid>,
|
|
# geom: <geom>
|
|
#
|
|
find $mastermap_dir -type f -name '*.3857.csv' \
|
|
-printf "COPY geometries ( geometry_geom, source_id ) FROM '$mastermap_dir/%f' WITH CSV HEADER;\n" | \
|
|
parallel \
|
|
psql -c {}
|
|
|
|
#
|
|
# Delete any duplicated geometries (by TOID)
|
|
#
|
|
psql -c "DELETE FROM geometries a USING (
|
|
SELECT MIN(ctid) as ctid, source_id
|
|
FROM geometries
|
|
GROUP BY source_id
|
|
HAVING COUNT(*) > 1
|
|
) b
|
|
WHERE a.source_id = b.source_id
|
|
AND a.ctid <> b.ctid;"
|