kdb is awesome, but very tailored to one-dimensional (time-ordered) data. I've built a couple multi-dimensional array database engines in my time and -- trust me -- it's a really difficult problem to solve. That said, I have a design kicking around for one that meets most of the OP's demands, so if anybody wants to join me...
There's been an explosion in raster data in just the last 5 years. Cheap satellites, cheap drones, and cheap platforms have really turned the firehose to "high". And the resolution on scientific data -- climate and weather model output, astronomy data, particle physics data, seismic data, etc. -- just keeps going up.
This is an area of massive growth for which no existing solution is quite adequate. If I had the time and/or the cash, I'd be diving in head-first.
There's been an explosion in raster data in just the last 5 years. Cheap satellites, cheap drones, and cheap platforms have really turned the firehose to "high". And the resolution on scientific data -- climate and weather model output, astronomy data, particle physics data, seismic data, etc. -- just keeps going up.
This is an area of massive growth for which no existing solution is quite adequate. If I had the time and/or the cash, I'd be diving in head-first.