4. Prepare Data


To be able to use pgRouting, data has to be imported into a database.

4.1. Prepare the database

pgRouting is installed as extension. This requires:

  • PostgreSQL 9.4 or higher

  • PostGIS 2.x installed as extension

These requirements are met on OSGeoLive. Once done, open a terminal window by pressing ctrl-alt-t and follow the instructions.


If OSGeoLive is not being used, please refer to Chapter: Appendix.

4.1.1. Create a pgRouting compatible database.


Depending on the postgres configuration -U <user> is needed on psql commands

# Create the database
createdb city_routing

# login as user "user"
psql city_routing

-- add PostGIS functions

-- add pgRouting functions

-- Inspect the pgRouting installation
\dx+ pgrouting

-- View pgRouting version
SELECT pgr_version();

-- exit psql

4.2. Get the Workshop Data

The pgRouting workshop will make use of OpenStreetMap data, which is already available on OSGeoLive. This workshop will use the Bucharesti city data and is a snapshot of August-2018.

4.2.1. Make a directory for pgRouting data manipulation

mkdir ~/Desktop/workshop
cd ~/Desktop/workshop

4.2.2. Getting the data Option 1) When using OSGeoLive

OSGeoLive comes with osm data from the city of Bucharesti.

bzcat ~/data/osm/$CITY.osm.bz2 > $CITY.osm Option 2) Download data form OSGeoLive website

The exact same data can be found on the OSGeoLive download page.

wget -N --progress=dot:mega \
bunzip2 $CITY.osm.bz2 Option 3) Download using Overpass XAPI.

The following downloads the latest OSM data on using the same area. Using this data in the workshop can generate variations in the results, due to changes since Jun-2017.

wget --progress=dot:mega -O "$CITY.osm" "http://www.overpass-api.de/api/xapi?*[bbox=${BBOX}][@meta]"

More information about how to download OpenStreetMap data can be found in https://wiki.openstreetmap.org/wiki/Downloading_data

An alternative for very large areas is to use the download services of Geofabrik.

4.3. Upload Data to the database

The next step is to run osm2pgrouting converter, which is a command line tool that inserts your data in the database, “ready” to be used with pgRouting. Additional information about osm2pgrouting can be found at the Appendix: osm2pgrouting Import Tool

For this step:

  • the osm2pgrouting default mapconfig.xml configuration file is used

  • and the ~/Desktop/workshop/Bucaresti_RO.osm data.

  • with the city_routing database

From a terminal window ctrl-alt-t.

4.3.1. Run the osm2pgrouting converter

cd ~/Desktop/workshop
osm2pgrouting \
    -f Bucaresti_RO.osm \
    -d city_routing \
    -U user


Depending on the osm2pgrouting version -W password is needed


           COMMAND LINE CONFIGURATION             *
Filename = Bucaresti_RO.osm
Configuration file = /usr/local/share/osm2pgrouting/mapconfig.xml
host = localhost
port = 5432
dbname = city_routing
username =
password =
prefix =
suffix =
Don't drop tables
Don't create indexes
Don't add OSM nodes
Testing database connection: city_routing
database connection successful: city_routing
Connecting to the database
connection success

Creating tables...
TABLE: ways_vertices_pgr already exists.
TABLE: ways_vertices_pgr already exists.
TABLE: ways_vertices_pgr already exists.
TABLE: ways_vertices_pgr already exists.
Opening configuration file: /usr/local/share/osm2pgrouting/mapconfig.xml
    Parsing configuration

Exporting configuration ...
  - Done
Counting lines ...
  - Done
Opening data file: Bucaresti_RO.osm     total lines: 1215318
    Parsing data

End Of file

    Finish Parsing data

Adding auxiliary tables to database...

Export Ways ...
    Processing 38897 ways:
[*************************|                         ] (51%) Total processed: 20000       Vertices inserted: 12609       Split ways inserted 14553
[**************************************************|] (100%) Total processed: 38897      Vertices inserted: 4530        Split ways inserted 8758

Creating indexes ...

Processing Points of Interest ...
size of streets: 38897

Tables on the database

psql -d city_routing -c "\d"

If everything went well the result should look like this:

               List of relations
Schema |           Name           |   Type   | Owner
public | configuration            | table    | user
public | configuration_id_seq     | sequence | user
public | geography_columns        | view     | user
public | geometry_columns         | view     | user
public | pointsofinterest         | table    | user
public | pointsofinterest_pid_seq | sequence | user
public | raster_columns           | view     | user
public | raster_overviews         | view     | user
public | spatial_ref_sys          | table    | user
public | ways                     | table    | user
public | ways_gid_seq             | sequence | user
public | ways_vertices_pgr        | table    | user
public | ways_vertices_pgr_id_seq | sequence | user
(13 rows)

4.4. Chapter: Appendix

OSGeoLive’s account name on the database is "user". To easily use the workshop when not using OSGeoLive this extra steps are needed:

# work on the home folder

# login to postgres
psql -U postgres

-- Create "user"

-- exit psql

# Add the user to .pgpass
echo :5432:*:user:user >> .pgpass