Query a DTED Directory instead of a specific File

[KPB3rd]

It'd be very useful to have a directory full of dted files, and be able to query the pool of tiles instead of checking each individual one. It could get fancy with loading tiles as needed, tracking frequency of use to free up older ones, etc.

[bbonenfant]

This is feature that I'd be happy to support. The implementation probably won't include automatically loading tiles into and out of memory, but will instead expose an interface to allow the user to do this themselves.

[westonCoder]

I will go ahead and second this. I have a similar tool I have built out for SRTM data, however I would like to transition to using this tool to replace it.

something like a Tiles() class that contains a hash map of Tile() objects, and also exposes some functions like pull_tiles(), that would pull tiles into memory from a directory. I may do this myself and make a pull request.