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NOMINATIM UI
Setting up the Nominatim UI . Nominatim is a search API, it does not provide a website interface on its own. nominatim-ui offers a small website for testing your setup and inspecting the database content.. This section provides a quick start how to use nominatim-ui with yourinstallation.
BASIC INSTALLATION
The numbers in brackets behind some parameters seem to work fine for 64GB RAM machine. Adjust to your setup. A higher number for max_wal_size means that PostgreSQL needs to run checkpoints less often but it does require the additional space on your disk.. Autovacuum must not be switched off because it ensures that the tables are frequently analysed. PLACE NODES AND BOUNDARIES There are three features in OSM data that are suitable candidates for creating an address: address tags, place nodes and administrative boundaries. Address tags are simple and obvious to use. However, not each object in OSM has them, so a fallback is needed. Place nodes are seemingly perfect for structured addressing. TESTING - NOMINATIM DOCUMENTATIONSEE MORE ON NOMINATIM.ORGADDRESS LOOKUP
Address lookup . The lookup API allows to query the address and other details of one or multiple OSM objects like node, way or relation.Parameters
PLACE OUTPUT FORMATS Place Output . The /reverse, /search and /lookup API calls produce very similar output which is explained in this section. There is one section for each format. The format correspond to what was selected via the format parameter.. JSON . The JSON format returns an array of places (for search and lookup) or a single place (for reverse) of thefollowing format:
REVERSE - NOMINATIM DOCUMENTATIONSEE MORE ON NOMINATIM.ORG NOMINATIMNOMINATIMDOCUMENTATIONDOWNLOADSINSTALLATION INSTRUCTIONSINSTALLATION ON UBUNTU 18REVERSE Nominatim can power the search box on your website, allowing your users to type free-form queries (“Cafe Paris, New York”) in any language. It also offers a structured query mode (“postcode=12345”, “city=London”, “type=cafe”) that helps you to automate geocoding of extensive address lists. OVERVIEW - NOMINATIM DOCUMENTATION Nominatim API . Nominatim indexes named (or numbered) features within the OpenStreetMap (OSM) dataset and a subset of other unnamed features (pubs, hotels, churches, etc). Its API has the following endpoints for querying the data: /search - search OSM objects by name or type. /reverse - search OSM object by their location. SEARCH - NOMINATIM 3.7.2 Search queries. The search API allows you to look up a location from a textual description or address. Nominatim supports structured and free-form search queries. The search query may also contain special phrases which are translated into specific OpenStreetMap (OSM) tags (e.g. Pub => amenity=pub ). This can be used to narrow down the kindof
NOMINATIM UI
Setting up the Nominatim UI . Nominatim is a search API, it does not provide a website interface on its own. nominatim-ui offers a small website for testing your setup and inspecting the database content.. This section provides a quick start how to use nominatim-ui with yourinstallation.
BASIC INSTALLATION
The numbers in brackets behind some parameters seem to work fine for 64GB RAM machine. Adjust to your setup. A higher number for max_wal_size means that PostgreSQL needs to run checkpoints less often but it does require the additional space on your disk.. Autovacuum must not be switched off because it ensures that the tables are frequently analysed. PLACE NODES AND BOUNDARIES There are three features in OSM data that are suitable candidates for creating an address: address tags, place nodes and administrative boundaries. Address tags are simple and obvious to use. However, not each object in OSM has them, so a fallback is needed. Place nodes are seemingly perfect for structured addressing. TESTING - NOMINATIM DOCUMENTATIONSEE MORE ON NOMINATIM.ORGADDRESS LOOKUP
Address lookup . The lookup API allows to query the address and other details of one or multiple OSM objects like node, way or relation.Parameters
PLACE OUTPUT FORMATS Place Output . The /reverse, /search and /lookup API calls produce very similar output which is explained in this section. There is one section for each format. The format correspond to what was selected via the format parameter.. JSON . The JSON format returns an array of places (for search and lookup) or a single place (for reverse) of thefollowing format:
REVERSE - NOMINATIM DOCUMENTATIONSEE MORE ON NOMINATIM.ORGNOMINATIM
The following is a list of additional data files useful for Nominatim installations: country_grid.sql.gz (mandatory from 3.0.0, included in release tar balls) Base geometries for all countries. gb_postcode_data.sql.gz. Additional postcode data for Great Britain. us_postcode_data.sql.gz. Additional postcode data for the UnitedStates.
NOMINATIM TECH TALK: FINDING PLACES Last month I was invited by CodeOp to give a technical introduction to geocoding and Nominatim to their students. This talk is now available online. The talk gave a short introduction of the OpenStreetMap project and the open-source universe that has developed around it.BASIC INSTALLATION
The numbers in brackets behind some parameters seem to work fine for 64GB RAM machine. Adjust to your setup. A higher number for max_wal_size means that PostgreSQL needs to run checkpoints less often but it does require the additional space on your disk.. Autovacuum must not be switched off because it ensures that the tables are frequently analysed. DETAILS - NOMINATIM DOCUMENTATION osmtype and osmid are required parameters. The type is one of node (N), way (W) or relation (R). The id must be a number. The class parameter is optional and allows to distinguish between entries, when the corresponding OSM object has more than one main tag. For example, when a place is tagged with tourism=hotel and amenity=restaurant, there will be two place entries in Nominatim, one for a UPDATE - NOMINATIM DOCUMENTATION Updating the Database . There are many different ways to update your Nominatim database. The following section describes how to keep it up-to-date using an online replication service for OpenStreetMap data For a list of other methods to add or update data see the output ofADDRESS LOOKUP
Address lookup . The lookup API allows to query the address and other details of one or multiple OSM objects like node, way or relation.Parameters
ADVANCED INSTALLATIONS Advanced installations . This page contains instructions for setting up multiple countries in your Nominatim database. It is assumed that you have already successfully installed the Nominatim software itself, if not return to the installation page. Importing multiple regions POSTCODES - NOMINATIM DOCUMENTATION Postcodes in Nominatim . The blog post Nominatim and Postcodes describes the handling implemented since Nominatim 3.1. Postcode centroids (aka 'calculated postcodes') are generated by looking at all postcodes of a country, grouping them and calculating the geometriccentroid.
US CENSUS (TIGER)
US TIGER address data . Convert TIGER/Line dataset of the US Census Bureau to SQL files which can be imported by Nominatim. The created tables in the Nominatim database are separate from OpenStreetMap tables and get queried at search time separately. INSTALLATION ON UBUNTU 20 sudo apt install -y php-cgi sudo apt install -y build-essential cmake g++ libboost-dev libboost-system-dev \ libboost-filesystem-dev libexpat1-dev zlib1g-dev \ libbz2-dev libpq-dev libproj-dev \ postgresql-server-dev-12 postgresql-12-postgis-3 \ postgresql-contrib-12 postgresql-12-postgis-3-scripts \ php php-pgsql php-intl libicu-dev python3-dotenv \ python3-psycopg2 python3-psutilpython3
NOMINATIMNOMINATIMDOCUMENTATIONDOWNLOADSINSTALLATION INSTRUCTIONSINSTALLATION ON UBUNTU 18REVERSE Nominatim can power the search box on your website, allowing your users to type free-form queries (“Cafe Paris, New York”) in any language. It also offers a structured query mode (“postcode=12345”, “city=London”, “type=cafe”) that helps you to automate geocoding of extensive address lists. NOMINATIMOPENSTREETMAP NOMINATIMNAME NOMINATIM IS NOT DEFINED The following is a list of additional data files useful for Nominatim installations: country_grid.sql.gz (mandatory from 3.0.0, included in release tar balls) Base geometries for all countries. gb_postcode_data.sql.gz. Additional postcode data for Great Britain. us_postcode_data.sql.gz. Additional postcode data for the UnitedStates.
OVERVIEW - NOMINATIM DOCUMENTATION Nominatim API . Nominatim indexes named (or numbered) features within the OpenStreetMap (OSM) dataset and a subset of other unnamed features (pubs, hotels, churches, etc). Its API has the following endpoints for querying the data: /search - search OSM objects by name or type. /reverse - search OSM object by their location.NOMINATIM UI
Setting up the Nominatim UI . Nominatim is a search API, it does not provide a website interface on its own. nominatim-ui offers a small website for testing your setup and inspecting the database content.. This section provides a quick start how to use nominatim-ui with yourinstallation.
BASIC INSTALLATION
The numbers in brackets behind some parameters seem to work fine for 64GB RAM machine. Adjust to your setup. A higher number for max_wal_size means that PostgreSQL needs to run checkpoints less often but it does require the additional space on your disk.. Autovacuum must not be switched off because it ensures that the tables are frequently analysed. SEARCH - NOMINATIM DOCUMENTATION Search queries. The search API allows you to look up a location from a textual description or address. Nominatim supports structured and free-form search queries. The search query may also contain special phrases which are translated into specific OpenStreetMap (OSM) tags (e.g. Pub => amenity=pub ). This can be used to narrow down the kindof
ADDRESS LOOKUP
Address lookup . The lookup API allows to query the address and other details of one or multiple OSM objects like node, way or relation.Parameters
POSTCODES - NOMINATIM DOCUMENTATION Postcodes in Nominatim . The blog post Nominatim and Postcodes describes the handling implemented since Nominatim 3.1. Postcode centroids (aka 'calculated postcodes') are generated by looking at all postcodes of a country, grouping them and calculating the geometriccentroid.
TROUBLESHOOTING
Check the last line of output that was logged before the process was killed. If it looks like this: Done 844 in 13 @ 64.923080 per second - Rank 26 ETA (seconds): 7.886255. then you can resume with the following command: nominatim import -- continue indexing. If the reported rank is 26 or higher, you can also safely add--index-noanalyse.
REVERSE - NOMINATIM 3.7.2SEE MORE ON NOMINATIM.ORG NOMINATIMNOMINATIMDOCUMENTATIONDOWNLOADSINSTALLATION INSTRUCTIONSINSTALLATION ON UBUNTU 18REVERSE Nominatim can power the search box on your website, allowing your users to type free-form queries (“Cafe Paris, New York”) in any language. It also offers a structured query mode (“postcode=12345”, “city=London”, “type=cafe”) that helps you to automate geocoding of extensive address lists. NOMINATIMOPENSTREETMAP NOMINATIMNAME NOMINATIM IS NOT DEFINED The following is a list of additional data files useful for Nominatim installations: country_grid.sql.gz (mandatory from 3.0.0, included in release tar balls) Base geometries for all countries. gb_postcode_data.sql.gz. Additional postcode data for Great Britain. us_postcode_data.sql.gz. Additional postcode data for the UnitedStates.
OVERVIEW - NOMINATIM DOCUMENTATION Nominatim API . Nominatim indexes named (or numbered) features within the OpenStreetMap (OSM) dataset and a subset of other unnamed features (pubs, hotels, churches, etc). Its API has the following endpoints for querying the data: /search - search OSM objects by name or type. /reverse - search OSM object by their location.NOMINATIM UI
Setting up the Nominatim UI . Nominatim is a search API, it does not provide a website interface on its own. nominatim-ui offers a small website for testing your setup and inspecting the database content.. This section provides a quick start how to use nominatim-ui with yourinstallation.
BASIC INSTALLATION
The numbers in brackets behind some parameters seem to work fine for 64GB RAM machine. Adjust to your setup. A higher number for max_wal_size means that PostgreSQL needs to run checkpoints less often but it does require the additional space on your disk.. Autovacuum must not be switched off because it ensures that the tables are frequently analysed. SEARCH - NOMINATIM DOCUMENTATION Search queries. The search API allows you to look up a location from a textual description or address. Nominatim supports structured and free-form search queries. The search query may also contain special phrases which are translated into specific OpenStreetMap (OSM) tags (e.g. Pub => amenity=pub ). This can be used to narrow down the kindof
ADDRESS LOOKUP
Address lookup . The lookup API allows to query the address and other details of one or multiple OSM objects like node, way or relation.Parameters
POSTCODES - NOMINATIM DOCUMENTATION Postcodes in Nominatim . The blog post Nominatim and Postcodes describes the handling implemented since Nominatim 3.1. Postcode centroids (aka 'calculated postcodes') are generated by looking at all postcodes of a country, grouping them and calculating the geometriccentroid.
TROUBLESHOOTING
Check the last line of output that was logged before the process was killed. If it looks like this: Done 844 in 13 @ 64.923080 per second - Rank 26 ETA (seconds): 7.886255. then you can resume with the following command: nominatim import -- continue indexing. If the reported rank is 26 or higher, you can also safely add--index-noanalyse.
REVERSE - NOMINATIM 3.7.2SEE MORE ON NOMINATIM.ORGNOMINATIM
The following is a list of additional data files useful for Nominatim installations: country_grid.sql.gz (mandatory from 3.0.0, included in release tar balls) Base geometries for all countries. gb_postcode_data.sql.gz. Additional postcode data for Great Britain. us_postcode_data.sql.gz. Additional postcode data for the UnitedStates.
ADVANCED INSTALLATIONS Advanced installations . This page contains instructions for setting up multiple countries in your Nominatim database. It is assumed that you have already successfully installed the Nominatim software itself, if not return to the installation page. Importing multiple regions UPDATE - NOMINATIM DOCUMENTATION Updating the Database . There are many different ways to update your Nominatim database. The following section describes how to keep it up-to-date using an online replication service for OpenStreetMap data For a list of other methods to add or update data see the output of DEPLOY - NOMINATIM DOCUMENTATION Note. Throughout this page, we assume that your Nominatim project directory is located in /srv/nominatim-project and that you have installed Nominatim using the default installation prefix /usr/local.If you have put it somewhere else, you need to adjust ARCHITECTURE OVERVIEW There are three basic parts to Nominatim's architecture: the data import, the address computation and the search frontend. The data import stage reads the raw OSM data and extracts all information that is useful for geocoding. This part is done by osm2pgsql, the same tool that can also be used to import a rendering database. STATUS - NOMINATIM 3.7.2 Status . Useful for checking if the service and database is running. The JSON output also shows when the database was last updated. Parameters . format= (defaults to 'text') Output DETAILS - NOMINATIM DOCUMENTATION osmtype and osmid are required parameters. The type is one of node (N), way (W) or relation (R). The id must be a number. The class parameter is optional and allows to distinguish between entries, when the corresponding OSM object has more than one main tag. For example, when a place is tagged with tourism=hotel and amenity=restaurant, there will be two place entries in Nominatim, one for aPLACE RANKING
The countries field contains a list of countries (as ISO 3166-1 alpha 2 code) for which the definition applies. When the field is omitted, then the definition is used as a fallback, when nothing more specific for a given country exists. tags contains the ranks for key/value pairs. The ranks can be either a single number, in which case they are the search and address rank, or an array of search PLACE OUTPUT FORMATS Place Output . The /reverse, /search and /lookup API calls produce very similar output which is explained in this section. There is one section for each format. The format correspond to what was selected via the format parameter.. JSON . The JSON format returns an array of places (for search and lookup) or a single place (for reverse) of thefollowing format:
INSTALLATION ON UBUNTU 18 sudo apt install -y php-cgi sudo apt install -y build-essential cmake g++ libboost-dev libboost-system-dev \ libboost-filesystem-dev libexpat1-dev zlib1g-dev\ libbz2-dev libpq-dev libproj-dev \ postgresql-server-dev-10 postgresql-10-postgis-2.4 \ postgresql-contrib-10 postgresql-10-postgis-scripts \ php php-pgsql php-intl libicu-dev python3-pip \ python3-psycopg2 python3-psutilpython3-jinja2
Nominatim
Blog Documentation Downloads OPEN-SOURCE GEOCODING WITH OPENSTREETMAP DATA Nominatim uses OpenStreetMap data to find locations on Earth by name and address (geocoding). It can also do the reverse, find an address for any location on the planet. _For occasional use_USE THE API
Usage policy
API documentation
_For power users_
INSTALL YOUR OWN
The latest release is 3.7.2.
Installation instructionsFEATURES
FIND PLACES BY NAME OR ADDRESS (GEOCODING) Nominatim can power the search box on your website, allowing your users to type free-form queries (“Cafe Paris, New York”) in any language. It also offers a structured query mode (“postcode=12345”, “city=London”, “type=cafe”) that helps you to automate geocoding of extensive address lists. LOOK UP ADDRESSES FOR A LOCATION (REVERSE GEOCODING) Given a latitude and longitude anywhere on the planet, Nominatim can find the nearest address. It can do the same for any OSM object givenits ID.
SCALABLE INSTALLATION Nominatim scales with your needs. Run a search service for your city on a laptop or set up a larger server with data of the whole planet.CONFIGURABLE SETUP
You can decide which features of OpenStreetMap are important to you. Nominatim imports only what you tell it to. ALWAYS UP-TO-DATE WITH OPENSTREETMAP OpenStreetMap data is constantly improved by thousands of editors. Keep up to date with these changes through minutely updates.FAST
Nominatim is the geocoding software that powers the official OSM site www.openstreetmap.org . It serves 30 million queries per day on a single server.SUPPORTERS
We thank the following companies for their support of parts of the Nominatim development: OpenStreetMap FoundationLocationIQ
Are you interested in supporting Nominatim? Please see the Fundingpage for details.
CONTRIBUTING
We welcome your code contributions and bug reports. Nominatim repository on Github Contribution guidelines * osm-search/NominatimImprint/Contact
Details
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