How to extract a group of DataTree Branches in C#?

[huhooya]

@PeterFotiadis

But just for the challenge of it you can do some random Matrices (see Tip) and query spaces accordingly. So for each space you’ll need a rational (I do hope) “portion” of a similar Matrix (or Matrices): that becomes just another Property of some space/room in the builInfo List.

I can understand most task means. But I still not quite understand Matrix. Really not good at Math… Will learn more! Thanks.