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How do I load GeoJSON data into BigQuery?
There are two ways to load GeoJSON data into BigQuery: Load newline-delimited GeoJSON files. Load individual GeoJSON geometry objects embedded in other file types. A newline-delimited GeoJSON file contains a list of GeoJSON feature objects, one per line in the file. A GeoJSON feature object is a JSON object with the following members: type.
How is the geography data represented in BigQuery?
In BigQuery, the GEOGRAPHY data type represents a geometry value or geometry collection. To represent spatial features, create a table with a GEOGRAPHY column for the geometry plus additional columns for the attributes. Each row of the table is a spatial feature, and the entire table represents a spatial feature collection.
Can a GIS file be loaded in BigQuery?
BigQuery GIS supports loading individual GeoJSON geometry objects that are embedded as text strings in other file types. For example, you can load a CSV file where one of the columns contains a GeoJSON geometry object.
What is a spatial feature collection in BigQuery?
A spatial feature collection is a set of spatial features. In BigQuery, the GEOGRAPHY data type represents a geometry value or geometry collection. To represent spatial features, create a table with a GEOGRAPHY column for the geometry plus additional columns for the attributes.
How can I convert OSM data to GeoJSON?
Using only the command line tool osm2pgsql we could import OSM data and set up an hstore column with an index and it would create tables out of OSM’s map layers that we could then query. Unfortunately, it’s not that easy if we want to convert OSM data to GeoJSON.
Which is an example of a GeoJSON format?
GeoJSON is a JSON-based format for geometries and spatial features. For example, the following defines a point in GeoJSON: GeoJSON data can contain any of the following object types: Geometry objects. A geometry object is a spatial shape, described as a union of points, lines, and polygons with optional holes. Feature objects.
Which is command line tool for converting geospatial data?
Ogr2ogr is a command line tool within the Geospatial Data Abstraction Library (GDAL), for converting geospatial data into different formats, while providing customization options to reproject coordinates, minimize attributes, and a whole host of advanced options.