Objects selection by X direction (-->)

I have a one problem, First see my attached file.

I have selections like all bracing member. I have done filter list as circle. now I want data of all circle by x direction (-->). How can it possible.

Add all your circles to a collection, using their handle as the 'key'
and the x value as the 'item'. Then run your collection through
your favorite sorting function. Many on the net to sort a vb
collection.