(Note: prior to GDAL 2.3, the functionality of this driver was available in the
GeoJSON driver. They are now distinct drivers)
Starting with OGR 1.11, the driver can read the TopoJSON format
The driver accepts three types of sources of data:
Starting with GDAL 2.3, the URL/filename/text might be prefixed with TopoJSON: to avoid any ambiguity with other drivers.
- Uniform Resource Locator (URL) - a Web address to
perform HTTP request.
- Plain text file with TopoJSON data - identified from the file extension .json or .topojson
- Text passed directly and encoded in Topo JSON