Imposm is an importer for OpenStreetMap data. It reads XML and PBF files and can import the data into PostgreSQL/PostGIS databases.

It is designed to create databases that are optimized for rendering/WMS services.

It is developed and supported by Omniscale, runs on Linux or Mac OS X and is released as open source under the Apache Software License 2.0.

See for more information.

Changelog

2.6.0 2015-01-10

• improve load performance of large limit-to geometries
• check connection before reading and fail if unable to connect
• new BoundaryPolygons mapping class that keeps inserted ways
• quote column names when generalizing table
• only skip import of polygons if way was inserted as multipolygon
• only look for tables/views/indexes with schema=public when rotating tables
• updated generated code for internal cache
• minor fixes

2.5.0 2012-12-06

• PostGIS 2 support
• new --limit-to option to limit imports to polygons
• added --quiet option that only logs progress once per minute
• add StringIndex and Index mappings for PostgreSQL
• always drop tables _and views with same name before creating new table/view. allows to change mappings from views to tables and vice versa.
• internal refactoring to make support for non SQL databases easier

2.4.0 2012-03-30

• new Class and Type field types
• add support to disable automatic type column
• new --connection option
• support for PostGIS Trigram indices
• do not try to simplify empty geometries
• limit progress logging to 5 times per second
• use SERIAL as primary key to support multiple features with the same OSM ID
• new optional splitting of long line strings
• use BIGINT for OSM ID in Postgres to support 64bit OSM IDs

2.3.2 2011-09-05

• fixed --table-prefix
• add --debug option for more verbose output
• fixed way merging
• fixed default_name_fields for UnionViews
• improved (contains) relation builder

2.3.1 2011-07-05

• DROP views instead of REPLACE to prevent errors when columns changed

2.3.0 2011-07-05

• new PseudoArea field type
• new Name and LocalizedName field type
• update SRS in GeneralizedTables and UnionTables
• new waterareas_gen0|1 in default style
• new area field in landusages table
• new meter_to_mapunit function to use same mapping for EPSG:4326 and projected SRS

2.2.0 2011-06-01

• support for Shapely speedups (>=1.2.10)
• new --port option for PostgreSQL port
• reduced size of nodes cache by ~40%
• store inserted ways in extra cache
• support for relations type=boundary
• new faster relation builder that supports relations with >1000 rings
• set import options in mapping file
  • import_partial_relations=True/False
  • relation_builder=contains(new)/union(old)
  • imposm_multipolygon_report=60(seconds)
  • imposm_multipolygon_max_ring=0

2.1.3 2011-04-19

• support for colons and other special chars in field and table names (e.g. de:name)

2.1.2 2011-04-13

• make it work on 32bit systems

2.1.1 2011-04-12

• new --proj option to change DB projection from EPSG:900913
• abort if there are existing cache files
• new --merge-cache and --overwrite-cache options

2.1.0 2011-03-29

• first open source release