42 lines
1.3 KiB
Bash
42 lines
1.3 KiB
Bash
|
#!/usr/bin/env bash
|
||
|
|
|
||
|
|
#
|
||
|
|
# Extract and load postcode data for search
|
||
|
|
#
|
||
|
|
|
||
|
|
# Download
|
||
|
|
# Codepoint Open from Ordnance Survey
|
||
|
|
|
||
|
|
# Unpack
|
||
|
|
# to codepo_gb/Data/*.csv
|
||
|
|
# with columns (no headers): Postcode, Positional_quality_indicator, Eastings, Northings, Country_code, NHS_regional_HA_code, NHS_HA_code, Admin_county_code, Admin_district_code, Admin_ward_code
|
||
|
|
unzip -n -d codepo_gb codepo_gb.zip
|
||
|
|
|
||
|
|
# Filter
|
||
|
|
# to codepo_gb/london_postcodes.csv
|
||
|
|
# with columns: postcode, eastings, northings
|
||
|
|
# "E09..." is London Borough prefix, used in Admin_county_code
|
||
|
|
echo "postcode,x,y" > codepo_gb/london_postcodes_27700.csv
|
||
|
|
grep -h '"E09' codepo_gb/Data/CSV/*.csv \
|
||
|
|
| sed 's/["]//g' \
|
||
|
|
| cut -f 1,3,4 -d "," \
|
||
|
|
>> codepo_gb/london_postcodes_27700.csv
|
||
|
|
|
||
|
|
# Transform
|
||
|
|
# to epsg:4326
|
||
|
|
rm -f codepo_gb/london_postcodes_4326.csv
|
||
|
|
ogr2ogr -s_srs "EPSG:27700" -t_srs "EPSG:4326" \
|
||
|
|
-oo X_POSSIBLE_NAMES=x -oo Y_POSSIBLE_NAMES=y \
|
||
|
|
-oo KEEP_GEOM_COLUMNS=no \
|
||
|
|
-f CSV \
|
||
|
|
codepo_gb/london_postcodes_4326.csv \
|
||
|
|
codepo_gb/london_postcodes_27700.csv \
|
||
|
|
-lco GEOMETRY=AS_WKT
|
||
|
|
|
||
|
|
# Coerce EPSG:4326 CRS
|
||
|
|
sed -i 's/^\"POINT/\"SRID=4326;POINT/' codepo_gb/london_postcodes_4326.csv
|
||
|
|
|
||
|
|
# Load
|
||
|
|
cat codepo_gb/london_postcodes_4326.csv \
|
||
|
|
| psql -c "COPY search_locations ( center, search_str ) FROM stdin WITH CSV HEADER;"
|