Hi Dave, thank you for using Boost.ICL. From your example, I am not completely sure I understand what you are trying to accomplish. In any case you have to distinguish between interval_sets and interval_maps 2011/6/3 Dave Schwartz <decebel@gmail.com>:
Hi Users,
I am trying to use the new ICL (interval container library) for a project that requires some interval based calculations. I have a question on using the joining interval_map.
For example, below I have a conceptual 30 minute window divided into three 10 minute intervals. I want to do some aggregates in my 10 minute windows. { [0,10], (10, 20], (20, 30) }
As you are not using associated values I assume you should better use an interval_set.
Now say, I have 2 clients shopping in the first interval (0, 10) and their shopping time window interval is [2, 5] and [4, 9] minutes respectively. When I add the 2 interval, value pairs to my interval_map, I see that the interval map gets splited from [0, 10] to { [0,2], [2, 4], [5,9], [9,10] }. How do I make sure the interval still remains from [0, 10].
By using an interval_set, which is joining, and does not have associated values.
My question is how do I make sure my original interval of 10 minutes is preserved. The samples mentioned do mention about joining interval_map but I cannot seem to figure out an example for my requirement.
Use interval_set, if you don't need to store and aggregate associated values. In contrast to interval_sets, interval_maps have to split intervals on aggregation. See e.g. http://www.joachim-faulhaber.de/boost_icl/doc/libs/icl/doc/html/boost_icl/ex... HTH Joachim -- Interval Container Library [Boost.Icl] http://www.joachim-faulhaber.de