Re: [boost] Interest in dimension/unit-checking library?

From: Andy Little (andy_at_[hidden])
Date: 2005-10-13 05:27:50

"Deane Yang" <deane_yang_at_[hidden]> wrote
> Noah Stein wrote:
>> Others, such as I, view the natural geometry to be a Grassmann space which
>> supports the addition and scalar weighting of points.  Addition of points is
>> a natural and proper operation.  Unfortunately, the best discussion I've
>> seen requires access to the ACM Digital Library:
>> http://portal.acm.org/citation.cfm?id=504792 .
>>
> (long discussion omitted)
>
> This is a very cool idea for those who are willing to understand the
> geometry behind it all, but I suspect it's a little too mysterious for
> most users of the units library. Also, don't you need to store two
> numbers for each scalar quantity? Isn't that a little costly in both
> space and computation time? I think your approach makes more sense for
> points in more than one dimension, where storing n-dimensional points as
> (n+1)-vectors is less costly.

As I understand it a grassman_point would only be used for intermediate results 
of an addition.

regards
Andy Little