Re: interval origami

On 11/30/18 4:02 PM, Adam Jensen wrote:
> On 11/30/18 3:19 PM, Adam Jensen wrote:
>> The 'numrange' type with the 'overlaps' and 'intersection' operators
>> seem to cover the fundamental computations in a very natural way.
> 
> Actually, those operators might not be entirely sufficient. Given two
> ranges like this:
> 
> 10.0|39.0|interesting
> 15.0|21.0|fail
> 
> Something like the negative or inverse of the intersection is needed:
> 
> 10.0|15.0|interesting
> 21.0|39.0|interesting

Perhaps overkill, but if you represent your timeline as actual line
segments, perhaps PostGIS would be useful. E.g.:

https://postgis.net/docs/manual-2.5/ST_Difference.html

HTH,

Joe

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