colouring-montreal/etl/load_coordinates.sh
2022-04-14 09:28:34 +01:00

37 lines
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#!/usr/bin/env bash
# Assign latitude and longitude to buildings with OpenTOID data
# - assume postgres connection details are set in the environment using PGUSER, PGHOST etc.
: ${1?"Usage: $0 ./path/to/opentoid/dir"}
opentoid_dir=$1
echo "Creating a temporary table for coordinates..."
psql -c "CREATE TABLE open_toid (
toid varchar,
version_number smallint,
version_date date,
source_product varchar,
easting float,
northing float,
longitude float,
latitute float
);"
echo "Loading Open TOID CSV(s) to temporary table..."
find $opentoid_dir -type f -name '*_converted.csv' \
-printf "$opentoid_dir/%f\n" | \
parallel \
cat {} '|' psql -c "\"COPY open_toid ( toid, version_number, version_date, source_product, easting, northing, longitude, latitute ) FROM stdin WITH CSV HEADER;\""
echo "Updating the buildings table with coordinates..."
psql -c "UPDATE buildings
SET location_latitude = open_toid.latitute,
location_longitude = open_toid.longitude
FROM open_toid
WHERE open_toid.toid = b.ref_toid
;"
# Delete the temporary table
# psql -c "DROP TABLE open_toid;"