Unpacked you'll see a directory of CSV files.
- ```
- $ more codepo_gb/Data/CSV/n.csv
- "N1 0AA",10,530626,183961,"E92000001","E19000003","E18000007","","E09000019","E05000368"
- "N1 0AB",10,530559,183978,"E92000001","E19000003","E18000007","","E09000019","E05000368"
- ```
+ $ more codepo_gb/Data/CSV/n.csv
+ "N1 0AA",10,530626,183961,"E92000001","E19000003","E18000007","","E09000019","E05000368"
+ "N1 0AB",10,530559,183978,"E92000001","E19000003","E18000007","","E09000019","E05000368"
The coordinates are "Northings" and "Eastings" in [OSGB 1936](http://epsg.io/1314) projection. They can be projected to WGS84 like this
- ```
- SELECT ST_AsText(ST_Transform(ST_SetSRID('POINT(530626 183961)'::geometry,27700), 4326));
- POINT(-0.117872733220225 51.5394424719303)
- ```
+ SELECT ST_AsText(ST_Transform(ST_SetSRID('POINT(530626 183961)'::geometry,27700), 4326));
+ POINT(-0.117872733220225 51.5394424719303)
+
[-0.117872733220225 51.5394424719303 on OSM map](https://www.openstreetmap.org/?mlon=-0.117872733220225&mlat=51.5394424719303&zoom=16)
3. Create database, import CSV files, add geometry column, dump into file
- ```
- DBNAME=create_gb_postcode_file
-
- createdb $DBNAME
- echo 'CREATE EXTENSION postgis' | psql $DBNAME
-
- cat data/gb_postcode_table.sql | psql $DBNAME
-
- cat codepo_gb/Data/CSV/*.csv | ./data-sources/gb-postcodes/convert_codepoint.php | psql $DBNAME
-
- cat codepo_gb/Doc/licence.txt | iconv -f iso-8859-1 -t utf-8 | dos2unix | sed 's/^/-- /g' > gb_postcode_data.sql
- pg_dump -a -t gb_postcode $DBNAME | grep -v '^--' >> gb_postcode_data.sql
-
- gzip -9 -f gb_postcode_data.sql
- ls -lah gb_postcode_data.*
-
- # dropdb $DBNAME
- ```
+ DBNAME=create_gb_postcode_file
+ createdb $DBNAME
+ echo 'CREATE EXTENSION postgis' | psql $DBNAME
+
+ cat data/gb_postcode_table.sql | psql $DBNAME
+ cat codepo_gb/Data/CSV/*.csv | ./data-sources/gb-postcodes/convert_codepoint.php | psql $DBNAME
+ cat codepo_gb/Doc/licence.txt | iconv -f iso-8859-1 -t utf-8 | dos2unix | sed 's/^/-- /g' > gb_postcode_data.sql
+ pg_dump -a -t gb_postcode $DBNAME | grep -v '^--' >> gb_postcode_data.sql
+
+ gzip -9 -f gb_postcode_data.sql
+ ls -lah gb_postcode_data.*
+ # dropdb $DBNAME