Is NMatrix a dependency or intended to be optional? Looks like it's a hard requirement done in https://github.com/v0dro/interpolation/blob/master/lib/interpolation.rb#L14.
Is NMatrix a dependency or intended to be optional? Looks like it's a hard requirement done in https://github.com/v0dro/interpolation/blob/master/lib/interpolation.rb#L14.