/data

Welcome to the Overture Maps Data Repo

This repository includes instructions and sample queries to access Overture Maps Data.

We also welcome feedback about Overture Maps data in the Discussions. Feedback on the data schema, is best provided in the discussions in the schema repository.

Accessing Overture Maps Data

Overture Maps data is available in cloud-native Parquet format. There is no single Overture "entire planet" file to be downloaded. Instead, we have organized the data for the Overture 2023-07-26-alpha.0 release by theme and type at the following locations:

Data Location

Theme Location
Admins
  • Amazon S3: s3://overturemaps-us-west-2/release/2023-07-26-alpha.0/theme=admins
  • Microsoft Azure: https://overturemapswestus2.blob.core.windows.net/release/2023-07-26-alpha.0/theme=admins
Buildings
  • Amazon S3: s3://overturemaps-us-west-2/release/2023-07-26-alpha.0/theme=buildings
  • Microsoft Azure: https://overturemapswestus2.blob.core.windows.net/release/2023-07-26-alpha.0/theme=buildings
Places
  • Amazon S3: s3://overturemaps-us-west-2/release/2023-07-26-alpha.0/theme=places
  • Microsoft Azure: https://overturemapswestus2.blob.core.windows.net/release/2023-07-26-alpha.0/theme=places
Transportation
  • Amazon S3: s3://overturemaps-us-west-2/release/2023-07-26-alpha.0/theme=transportation
  • Microsoft Azure: https://overturemapswestus2.blob.core.windows.net/release/2023-07-26-alpha.0/theme=transportation

Parquet Schema

The Parquet files match the Overture Data Schema for each theme with the following enhancements:

  1. The id column contains temporary IDs that are not yet part of the Global Entity Reference System (GERS). These IDs are not yet stable and are likely to change significantly up to the point that GERS is released.
  2. The bbox column is a struct with the following attributes: minX, maxX, minY, maxY. This column allows you to craft more efficient spatial queries when running SQL against the cloud.
  3. The geometry column is encoded as WKB.

Accessing Overture Maps Data

You can access Overture Parquet data files directly from the cloud, or copy them to your preferred destination, or download them locally. We do encourage you to fetch the data directly from the cloud using one of the SQL query options documented below.

1. Amazon Athena (SQL)

  1. You will need an AWS account.
  2. In the Amazon Athena console on AWS:
    • Run CREATE EXTERNAL TABLE queries to set up your view of the tables: click for queries.
    • Be sure to load the partitions by running MSCK REPAIR <tablename>; or choosing "Load Partitions" from the table options menu.

Example Athena SQL query to download a CSV of places in Seattle:

SELECT
       CAST(names AS JSON),
       geometry -- WKB
FROM
       places
WHERE
       bbox.minX > -122.4447744
   AND bbox.maxX < -122.2477071
   AND bbox.minY > 47.5621587
   AND bbox.maxY < 47.7120663

More information on using Athena is available in the Amazon Athena User Guide.

2. Microsoft Synapse (SQL)

  1. You will need an Azure account.
  2. Create a Synapse workspace.

Example SQL query to read places in Seattle:

SELECT TOP 10 *
  FROM
       OPENROWSET(
           BULK 'https://overturemapswestus2.blob.core.windows.net/release/2023-07-26-alpha.0/theme=places/type=place/',
           FORMAT = 'PARQUET'
       )
  WITH
       (
           names VARCHAR(MAX),
           categories VARCHAR(MAX),
           websites VARCHAR(MAX),
           phones VARCHAR(MAX),
           bbox VARCHAR(200),
           geometry VARBINARY(MAX)
       )
    AS
       [result]
 WHERE
       TRY_CONVERT(FLOAT, JSON_VALUE(bbox, '$.minx')) > -122.4447744
   AND TRY_CONVERT(FLOAT, JSON_VALUE(bbox, '$.maxx')) < -122.2477071
   AND TRY_CONVERT(FLOAT, JSON_VALUE(bbox, '$.miny')) > 47.5621587
   AND TRY_CONVERT(FLOAT, JSON_VALUE(bbox, '$.maxy')) < 47.7120663

More information is available at Query files using a serverless SQL pool - Training | Microsoft Learn.

3. DuckDB (SQL)

DuckDB is an analytics tool you can install locally that can efficiently query remote Parquet files using SQL. It will only download the subset of files it needs to fulfil your queries.

If, for example, you wanted to download the administrative boundaries for all adminLevel=2 features, you could run:

COPY (
    SELECT
           type,
           subType,
           localityType,
           adminLevel,
           isoCountryCodeAlpha2,
           JSON(names) AS names,
           JSON(sources) AS sources,
           ST_GeomFromWkb(geometry) AS geometry
      FROM read_parquet('s3://overturemaps-us-west-2/release/2023-07-26-alpha.0/theme=admins/type=*/*', filename=true, hive_partitioning=1)
     WHERE adminLevel = 2
       AND ST_GeometryType(ST_GeomFromWkb(geometry)) IN ('POLYGON','MULTIPOLYGON')
) TO 'countries.geojson'
WITH (FORMAT GDAL, DRIVER 'GeoJSON');

This will create a countries.geojson file containing 265 country polygons and multipolygons.

To make this query work in DuckDB, you may need a couple of one-time setup items to install the duckdb_spatial and httpfs extensions:

INSTALL spatial;
INSTALL httpfs;

And a couple of per-session items to load the extensions and tell DuckDB which S3 region to find Overture's data bucket in:

LOAD spatial;
LOAD httpfs;
SET s3_region='us-west-2';

4. Download the Parquet files

You can download the Parquet files from either Azure Blob Storage or Amazon S3 at the locations given in the table at the top of the page.

After installing the AWS CLI, you can download the files from S3 using the below command. Set <DESTINATION> to a local directory path to download the files, or to an s3:// path you control to copy them into your S3 bucket.

aws s3 cp --region us-west-2 --no-sign-request --recursive s3://overturemaps-us-west-2/release/2023-07-26-alpha.0/ <DESTINATION>

You can download the files from Azure Blob Storage using Azure Storage Explorer or the AzCopy command. An example azcopy command is given below.

azcopy copy "https://overturemapswestus2.dfs.core.windows.net/release/2023-07-26-alpha.0/" "<<local directory path>>"  --recursive```

Data Release Feedback

We are very interested in feedback on the Overture data. Please use the Discussion section of this repo to comment. Tagging it with the relevant theme name (Places, Transportation) will help direct your ideas.

Submissions

Category selection

  1. Click HERE to submit your feedback
  2. Select the layer discussion category
    • Administration Boundaries
    • Transportation
    • Places
    • Buildings

Discussion outline

  1. Add a title
  2. Outline your feedback with as much detail as possible
  3. Click [Start Discussion]

OMF Review

The associated Task Force will carefully review each submission and offer feedback where required.