Re: [Boost-users] can not compile nearest neighbors in d dimensions

On 16 April 2014 12:30, Mateusz Łoskot wrote:

On 16 April 2014 12:02, Georgios Samaras wrote:

...

...

Long story short: int const M = 3;

I have checked the link already. Yes, I had tried that it worked, but, as I said the dimensions are going to be read from a file given by the user (that is run time I guess). That means that Boost can not let the user apply a desired dimension?

You need to use multiple models and dispatch between them in runtime.

You may find this overview helpful "BG uses a generic programming paradigm, just as the entire Boost library does. BG is mostly composed of function templates and class templates, so it’s not OK to use the dynamic polymorphism paradigm here, we instead have to statically dispatch geometry objects of each type to the right version of each BG spatial function call." http://mysqlserverteam.com/making-use-of-boost-geometry-in-mysql-gis/ IOW, you need to think of these two as separate types: bg::model::point point1; bg::model::point point2; like one is std::vector<float> and one is std::vector<int>. Best regards, -- Mateusz Łoskot, http://mateusz.loskot.net