On 9 Aug 2007, at 17:27, Eric Niebler wrote:
Matthias Troyer wrote:
How do you express the delta series as a run then? length 1?
For integer offsets, yes. For floating point, no. The time series currently has a notion of an "indivisible" run -- one that cannot be divided into smaller time slices. For float, that is essentially a run like [3.14,3.14] -- a closed range. That mostly works, but it leads to some inconsistent handling of termination conditions, since all other runs are half-open. The solution may involve nothing more than establishing a convention, or it may involve promoting the concept of Point to the same importance as Run and specializing algorithms appropriately. It'll take some thought.
I think that this is indeed the main and only problem with floating point offsets and it will take some thought. I am not yet sure which solution would be best, but nothing more than what you mentioned should be needed. Matthias