On Sat, 5 Oct 2019, 16:32 Ahmet Temiz via Geometry, <geometry@lists.boost.org> wrote:
How can I retrieve geometric data from  postgis

Use SQL and parse the output or you can try to read it with this unreleased extension 


Use the  shapelib or you can try one of these unreleased extension related to shapefile format 


Remember, Boost.Geometry is not  another GDAL/OGR library. 
You may need to implement readers parsers on your own or use third parties. 

Best regards, 
Mateusz Loskot, mateusz@loskot.net
(Sent from mobile, may suffer from top-posting)