[Proj] How to use proj from a Ruby application

[Luís de Sousa]

Dear all,

I am trying to use Proj from a Ruby application. There are various
Ruby libraries out there [0, 1] typically called "proj4rb"; none seems
to have had active development for multiple years and so far I was not
able to install any of them [2].

What other alternatives are there to use proj with Ruby?

Thank you,

Luís


[0] https://github.com/cfis/proj4rb

[1] https://github.com/Caged/proj4rb

[2] http://gis.stackexchange.com/questions/136550/how-to-install-proj4rb-on-ubuntu-14-04