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Convert OpenStreetMap data into GIS and mobile mapping file formats.

Project description

OSM Export Tool

This project is under development. The current Export Tool web service repository is at hotosm/osm-export-tool.

Motivation

This program filters and transforms OpenStreetMap data into thematic, tabular GIS formats. Filtering of features is specified via SQL embedded in a YAML mapping file, for example:

buildings_with_addresses:  # creates a thematic layer called "buildings_with_addresses"
  types:
    - polygons
  select:
    - building
    - height
    - addr:housenumber
  where:
    - building = 'yes' and addr:housenumber IS NOT NULL

It can also create files in non-tabular formats such as those for Garmin GPS devices or the OSMAnd Android app. (coming soon)

Installation

  • install via pip install osm-export-tool. Python 3 and a working GDAL installation are required. GDAL can be installed via Homebrew on Mac or the ubuntugis PPAs on Ubuntu.

PyOsmium is used to read OSM files and GDAL/OGR is used to write GIS files, so this program should be reasonably fast and light on memory. There is a built-in OSM reader available for GDAL/OGR, but this program is much more flexible.

Example usage

osm-export-tool INPUT_FILE.pbf OUTPUT_NAME

will create OUTPUT_NAME.gpkg.

All the below flags are optional.

  • -m, --mapping : specify a mapping YAML. Defaults to osm_export_tool/mappings/defaults.yaml, which is a very broad selection of OSM tags ported from the imposm3 defaults.
  • -f, --formats : a comma-separated list of formats such as gpkg,shp. Defaults to just gpkg.
  • --omit-osm-ids: By default, every table will have an osm_id column. Relation IDs are negative.
  • --clip <file>: either a .poly or GeoJSON file.
    • The GeoJSON must be either a Polygon or MultiPolygon geometry, or a FeatureCollection with one Polygon or MultiPolygon feature.
    • Clipping is performed by Shapely and can be slow. It is recommended to filter the input PBF with a tool like osmium-tool.

YAML Mapping

  • SQL statements must be comparisons of keys to constants with the key first.
    • Valid examples:
      • height > 20
      • amenity='parking' OR (building = 'yes' and height > 5)
    • Invalid examples:
      • 20 < height
      • building > height
  • More examples can be found in the mappings directory.
  • if the types key is omitted, it defaults to points, lines and polygons.
  • At least one tag is required as a child of the select key.
  • If the where key is omitted, it defaults to choosing all features where any of the selected keys are present.
  • if where is a list of SQL, it is equivalent to joining each SQL in the list with OR.

Output formats

  1. OGC GeoPackage (gpkg)
  • This is the default export format, and the most flexible for modern GIS applications.
  • tables will be created with the wkbUnknown geometry type, which allows heterogeneous geometry types.
  1. Shapefile (shp)
  • Each layer and geometry type is a separate .SHP file. This is because each .SHP file only supports a single geometry type and column schema.
  1. KML (kml)
  • Each layer and geometry type is a separate .KML file. This is because the GDAL/OGR KML driver does not support interleaved writing of features with different geometry types.
  1. Maps.ME (coming soon)

  2. OsmAnd (coming soon)

  3. Garmin (coming soon)

Project details


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osm-export-tool-0.0.7.tar.gz (19.7 kB view hashes)

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