I'm using boost::geometry::svg_mapper to save my shapes with floating point coordinates into an .svg file. It works great, but they are stored as integers. I can see this line in svg_mapper.hpp:

namespace detail { namespace svg
{
    typedef model::point<int, 2, cs::cartesian> svg_point_type;
}}

Thus svg_point is clearly defined to have integer coordinates. However, it is not convenient - SVG handles floating point coordinated perfectly well. Why not using original type of the serialized collection and let streams handle representation?