Import

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Importing (also known as Bulk Importing) is the process of taking some external data source and converting it for use in OSM.

Bulk imports are undertaken as a supplement to data collected by individual volunteers, and their data and ability to work in an area always has priority. Many free potential datasources have been updated into OSM in the past, like AND Data in the Netherlands, TIGER in the United States, and MassGIS in the US state of Massachusetts.

Unlike editing the map or uploading GPX traces, importing combines an existing dataset with the OSM dataset, and thus can include a complicated merging process.

More information

Import Catalogue 
A list of large scale imports. Please document your imports there so that others have a chance of finding out where that strange data came from and can learn from your experiences.
Import Guidelines 
Some guidelines on how to import data. Read this if you are planning your own import.
Software 
Description of software and import processes.
Handling bad imports 
What to do if you discover somebody performing bad imports.

See also

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